ASME B73.1M-2001 pdf download.SPECIFICATION FORHORIZONTAL END SUCTIONCENTRIFUGAL PUMPS FOR CHEMICAL PROCESS. (c) Pump Casing Jacket (d) Bolt on External Heating and Cooling Jacket (e) Bearing Housing Cooling 4.3.6 Gasket(s). The casing-to-cover gasket shall be confined on the atmospheric side to prevent blowout. 4.4 Impeller 4.4.1 Types. Impellers of open. semi-open. and closed designs are optional. 4.4.2 Adjustment. Means for external...