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Depending on the part geometry and operating temperature, the throttle bushing can be made from either solid composite material, or the existing metal part can be used as a holder for a Vespel CR or B-Series material insert. If you have upgraded the wear rings to Vespel CR, reduce the clearance of the throttle and center bushing Location: Conshohocken Rd,Pennsylvania.

Pump Throat Bushing NSN: Part(s): NA; add to compare. Name: Pump Throat Bushing NSN: Part(s): CA, CA Missing: Kathleen FL. Clearance between impeller disc vanes and stuffing box housing: in. Clearance between shaft sleeve and throat bushing: in. diametral. (max ″) E. Field reassembly 1. Back out pusher screws and bolt distance piece to casing.

Make sure proper gasket is placed in between. 2. Replace foot support bolts. 3. Reconnect all Missing: Kathleen FL. Dec 17, A common component in both of these specifications is the so-called throat bushing, which is defined as:"A device that forms a restrictively close clearance around the sleeve (or shaft) between the (inner) seal and the impeller." The throat bushing can form a primary interface between the pump and the mechanical treeclearance.pwted Reading Time: 6 mins.

Check pump cross section to see the impellers arrangment.

Dec 18, (b) Throat bushing to shaft fit is to be ”” clearance (c) Throat bushing to shaft fits of inline pumps (depending on shaft size) where the throat bushings may act as intermediate bearings, will have clearances ranging from ” to ” Weld overlays can be substituted for metallic impeller wear treeclearance.pwg: Kathleen FL.

THROAT BUSHING tion by running dry until pump dis- charge flow is established. At one installation, the engineer estimated that it would take more than five minutes for the pumpage to reach the surface discharge from lower water level. GRAPHALLOY survived this duration with margin to spare. GRAPHALLOY THROAT BUSHING GRAPHALLOY INTERSTAGE BUSHINGMissing: Kathleen FL.

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