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  <xsd:element abstract="true" id="spxc_HeatingandVentilationMember" name="HeatingandVentilationMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ImpairmentOfLongLivedAssetsAndFiniteLivedIntangibleAssetsPolicyTextBlock" name="ImpairmentOfLongLivedAssetsAndFiniteLivedIntangibleAssetsPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncomeTaxExpenseBenefitFromAuditSettlementsAndStatuteExpiration" name="IncomeTaxExpenseBenefitFromAuditSettlementsAndStatuteExpiration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncomeTaxExpenseBenefitFromLossOnInvestmentInForeignSubsidiary" name="IncomeTaxExpenseBenefitFromLossOnInvestmentInForeignSubsidiary" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncomeTaxPolicyUseofEstimatesPolicyTextBlock" name="IncomeTaxPolicyUseofEstimatesPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncreaseDecreaseinAccountsReceivableNet" name="IncreaseDecreaseinAccountsReceivableNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncreaseDecreaseinContractwithCustomerAssetNetCurrent" name="IncreaseDecreaseinContractwithCustomerAssetNetCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncreaseDecreaseinContractwithCustomerLiabilityCurrent" name="IncreaseDecreaseinContractwithCustomerLiabilityCurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncreaseDecreaseinContractwithCustomerLiabilityNoncurrent" name="IncreaseDecreaseinContractwithCustomerLiabilityNoncurrent" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_IncreaseDecreaseinContractwithCustomersNet" name="IncreaseDecreaseinContractwithCustomersNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_IndexTypeAxis" name="IndexTypeAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_IndexTypeDomain" name="IndexTypeDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_IndividuallyImmaterialDisposalGroupsIncludingDiscontinuedOperationsMember" name="IndividuallyImmaterialDisposalGroupsIncludingDiscontinuedOperationsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_InterestRateSwapThroughDecember2021Member" name="InterestRateSwapThroughDecember2021Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_LargePowerProjectsMember" name="LargePowerProjectsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_LiabilityForAsbestosAndEnvironmentalClaimsProceedsFromInsuranceRecoveries" name="LiabilityForAsbestosAndEnvironmentalClaimsProceedsFromInsuranceRecoveries" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_LondonInterbankOfferedRateLIBORPeriodFourMember" name="LondonInterbankOfferedRateLIBORPeriodFourMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_LondonInterbankOfferedRateLIBORPeriodOneMember" name="LondonInterbankOfferedRateLIBORPeriodOneMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_LondonInterbankOfferedRateLIBORPeriodThreeMember" name="LondonInterbankOfferedRateLIBORPeriodThreeMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_LondonInterbankOfferedRateLIBORPeriodTwoMember" name="LondonInterbankOfferedRateLIBORPeriodTwoMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_LongTermCashAwardsMember" name="LongTermCashAwardsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_LongTermContractsOrProgramsTableTextBlock" name="LongTermContractsOrProgramsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_MutaresAGMember" name="MutaresAGMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_NetBillingsInExcessOfBillingsAfterAcquisition" name="NetBillingsInExcessOfBillingsAfterAcquisition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="spxc_NetBillingsInExcessOfCostsAndEstimatedEarnings" name="NetBillingsInExcessOfCostsAndEstimatedEarnings" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="spxc_NewTermLoanMember" name="NewTermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_NonEmployeeDirectorIncentivePlanMember" name="NonEmployeeDirectorIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_NumberOfCountriesInWhichEntitySellsItsProductsAndServices" name="NumberOfCountriesInWhichEntitySellsItsProductsAndServices" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="spxc_OperatingExpense" name="OperatingExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_OtherBorrowingsMember" name="OtherBorrowingsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_OtherCashCostsRecoveriesNet" name="OtherCashCostsRecoveriesNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_OtherChangesInNoncontrollingInterests" name="OtherChangesInNoncontrollingInterests" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_OtherForeignCountriesMember" name="OtherForeignCountriesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_OtherLongTermLiabilitiesMember" name="OtherLongTermLiabilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_ParticipationForeignCreditInstrumentFacilityMember" name="ParticipationForeignCreditInstrumentFacilityMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_PensionAndOtherPostretirementBenefitExpenseOfContinuingOperations" name="PensionAndOtherPostretirementBenefitExpenseOfContinuingOperations" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_PercentageOfInitialPrincipalAmountOfTermLoanToBeRepaidAnnuallyInQuarterlyInstallments" name="PercentageOfInitialPrincipalAmountOfTermLoanToBeRepaidAnnuallyInQuarterlyInstallments" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_PerformanceSharesRestrictedStockRestrictedStockUnitsandEmployeeStockOptionMember" name="PerformanceSharesRestrictedStockRestrictedStockUnitsandEmployeeStockOptionMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_PerformanceSharesRestrictedStockandRestrictedStockUnitsMember" name="PerformanceSharesRestrictedStockandRestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_PeriodOfRollingTermOfEmploymentAgreements" name="PeriodOfRollingTermOfEmploymentAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_PeriodWithinWhichAssetWillBeSold" name="PeriodWithinWhichAssetWillBeSold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_PeriodWithinWhichLiabilitiesWillBeSettled" name="PeriodWithinWhichLiabilitiesWillBeSettled" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_PowerTransformersMember" name="PowerTransformersMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ProceedsfromContractTermination" name="ProceedsfromContractTermination" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_ProcessCoolingProjectsMember" name="ProcessCoolingProjectsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_PurchaseCardProgramMember" name="PurchaseCardProgramMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_QuarterlyFinancialInformationDisclosureTable" name="QuarterlyFinancialInformationDisclosureTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_QuarterlyFinancialInformationLineItems" name="QuarterlyFinancialInformationLineItems" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ReclassificationfromAccumulatedOtherComprehensiveIncomeInitialAdoptionof606" name="ReclassificationfromAccumulatedOtherComprehensiveIncomeInitialAdoptionof606" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_ReclassificationfromAccumulatedOtherComprehensiveIncomeStrandedTaxEffectsResultingfromtheTaxCutsandJobsAct" name="ReclassificationfromAccumulatedOtherComprehensiveIncomeStrandedTaxEffectsResultingfromtheTaxCutsandJobsAct" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_RepaymentsUnderSeniorCreditFacilities" name="RepaymentsUnderSeniorCreditFacilities" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="spxc_RepaymentsUnderTradeReceivablesAgreement" name="RepaymentsUnderTradeReceivablesAgreement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_RestrictedStockAndRestrictedStockUnitsMember" name="RestrictedStockAndRestrictedStockUnitsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_RestructuringAndIntegrationReserveSettledWithCash" name="RestructuringAndIntegrationReserveSettledWithCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_RestructuringAndIntegrationReserves" name="RestructuringAndIntegrationReserves" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="spxc_RestructuringAndIntegrationReservesPeriodExpense" name="RestructuringAndIntegrationReservesPeriodExpense" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="spxc_RestructuringAndIntegrationReservesTranslationAndOtherAdjustment" name="RestructuringAndIntegrationReservesTranslationAndOtherAdjustment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="spxc_RevenueUnderPercentageOfCompletionMethod" name="RevenueUnderPercentageOfCompletionMethod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SP600CapitalGoodsIndexMember" name="SP600CapitalGoodsIndexMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SPXCMember" name="SPXCMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SPXFlowIncMember" name="SPXFlowIncMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SPXHeatTransferBusinessMember" name="SPXHeatTransferBusinessMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SabikMarineMember" name="SabikMarineMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_ScheduleOfDebtInstrumentsTable" name="ScheduleOfDebtInstrumentsTable" nillable="true" substitutionGroup="xbrldt:hypercubeItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleOfExpectedBenefitPaymentsAndFederalSubsidiesTableTextBlock" name="ScheduleOfExpectedBenefitPaymentsAndFederalSubsidiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleOfFundedStatusAndAmountsRecognizedInBalanceSheetAndAccumulatedOtherComprehensiveIncomeLossTableTextBlock" name="ScheduleOfFundedStatusAndAmountsRecognizedInBalanceSheetAndAccumulatedOtherComprehensiveIncomeLossTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignAndComponentsOfIncomeTaxExpenseBenefitTableTextBlock" name="ScheduleOfIncomeBeforeIncomeTaxDomesticAndForeignAndComponentsOfIncomeTaxExpenseBenefitTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleOfRestructuringImpairmentAndOtherActivitiesBySegmentTableTextBlock" name="ScheduleOfRestructuringImpairmentAndOtherActivitiesBySegmentTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleOfShareBasedPaymentAwardRestrictedStockActivityValuationAssumptionsTableTextBlock" name="ScheduleOfShareBasedPaymentAwardRestrictedStockActivityValuationAssumptionsTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleOfValuationAndQualifyingAccountsDisclosureTableTextBlock" name="ScheduleOfValuationAndQualifyingAccountsDisclosureTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ScheduleofRestructuringandIntegratedLiabilitiesTableTextBlock" name="ScheduleofRestructuringandIntegratedLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SchonstedtInstrumentCompanyMember" name="SchonstedtInstrumentCompanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SeniorCreditAgreementRange1Member" name="SeniorCreditAgreementRange1Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SeniorCreditAgreementRange2Member" name="SeniorCreditAgreementRange2Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SeniorCreditAgreementRange3Member" name="SeniorCreditAgreementRange3Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SeniorCreditAgreementRange4Member" name="SeniorCreditAgreementRange4Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SeniorCreditAgreementRange5Member" name="SeniorCreditAgreementRange5Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SeniorCreditFacilitiesMember" name="SeniorCreditFacilitiesMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAmortizationPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsAmortizationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriodBasedOnHistoricalVolatility" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityPeriodBasedOnHistoricalVolatility" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateCalculationPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRateCalculationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTotalShareholderReturnCorrelation" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsTotalShareholderReturnCorrelation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantIncreaseDecrease" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrantIncreaseDecrease" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="spxc_SharesOutstandingRollForward" name="SharesOutstandingRollForward" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_SiteContingencyNumberOfActiveSites" name="SiteContingencyNumberOfActiveSites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="spxc_SiteContingencyNumberOfSites" name="SiteContingencyNumberOfSites" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="spxc_SiteContingencyNumberOfSitesOnWhichEntityPotentiallyResponsible" name="SiteContingencyNumberOfSitesOnWhichEntityPotentiallyResponsible" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="spxc_SouthAfricanProjectsMember" name="SouthAfricanProjectsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_SpecialCharges" name="SpecialCharges" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SpecialChargesNetMember" name="SpecialChargesNetMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_SpecialChargesNonCash" name="SpecialChargesNonCash" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_StandardandExtendedProductWarrantyAccrualImpactofInitialAdoptionof606" name="StandardandExtendedProductWarrantyAccrualImpactofInitialAdoptionof606" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_StockCompensationPlan2002Member" name="StockCompensationPlan2002Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax" name="StockIssuedDuringPeriodValueShareBasedCompensationPlansNetOfTax" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_SubsidiaryofmutaresAGtheBuyerMember" name="SubsidiaryofmutaresAGtheBuyerMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_SupplementalUnemploymentBenefitsNumberofIndividualswithSeveranceBenefitAgreements" name="SupplementalUnemploymentBenefitsNumberofIndividualswithSeveranceBenefitAgreements" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="spxc_TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect" name="TaxCutsAndJobsActOf2017ReclassificationFromAOCIToRetainedEarningsTaxEffect" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="spxc_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateExistingIncomeTaxExpenseBenefit" name="TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateExistingIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="spxc_TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit" name="TaxCutsandJobsActof2017IncompleteAccountingChangeinTaxRateProvisionalIncomeTaxExpenseBenefit" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_TermLoanMember" name="TermLoanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_U.S.PostretirementPlanOPEBMember" name="U.S.PostretirementPlanOPEBMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_UndergroundPipeLocatorsandInspectionsEquipmentMember" name="UndergroundPipeLocatorsandInspectionsEquipmentMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_UnearnedRevenue" name="UnearnedRevenue" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="spxc_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedNet" name="UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccruedNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element id="spxc_UnrecognizedTaxBenefitsNet" name="UnrecognizedTaxBenefitsNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="spxc_UnvestedRestrictedStockAndRestrictedStockUnitsthatdidnotMeetRequiredMarketThresholdsforVestingMember" name="UnvestedRestrictedStockAndRestrictedStockUnitsthatdidnotMeetRequiredMarketThresholdsforVestingMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="spxc_UseOfEstimatesDisclosureAbstract" name="UseOfEstimatesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="spxc_UseOfEstimatesTextBlock" name="UseOfEstimatesTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
</xsd:schema>





