1900 Series - Maintenance Manual

XXI. Recommended Spare Parts for 1900 Series SRVsTable 27: 1900 TM Conventional and 1900 TM -30 Bellows1900 TM Conventional and 1900 TM -30 Bellows with Liquid Trim (LS)Class1900 TM Conventional and 1900 TM -30 Bellows with Thermodisc ® (TD)1900 Universal Media (UM) and 1900 UM -30 BellowsPart NameC-conventionalB-bellowsQty. Parts /Same Valvesin ServiceI. Disc (TD) C and B 1/1NeedProbabilityCoverageStocking Class I parts at theQty. Parts column rate providessufficient replacements for 70%of maintenance requirementsDisc (Std. & UM) C and B 1/3Nozzle (Std. & UM) C and B 1/10Limit Washer 1 (Std. & UM) C and B 1/1Bellows (Std. & UM) B 1/3Adj. Ring Pin (Std. & UM) C and B 1/3Disc and Spindle Retainers (Std. & UM) C and B 1 Set/1Gasket (Set)(1) Cap Gasket (Std. & UM) C and B 1/1(1) Bonnet Gasket (Std. & UM) C and B 1/1(1) Guide Gasket (Std. & UM) C and B 1/1(1) Adj. Ring Pin Gasket (Std. & UM) C and B 1/1(1) Bellows Gasket (Std. & UM) B 1/170%II. Disc Holder (Std. & UM) C and B 1/6Stocking Class II parts, inaddition to Class I, at the Qty.Parts column rate providessufficient replacments for 85%of maintenance requirementsSpindle (Std. & UM) C and B 1/6Guide (Std. & UM) C and B 1/6Studs, Base (Std. & UM) C and B 1 Set/6Nuts, Base Stud (Std. & UM) C and B 1 Set/685%Note 1 For restricted lift valves only.YOUR SAFETY IS OUR BUSINESS!!!Dresser, Inc. has not authorized any company or any individual to manufacture replacement parts for its valve products.When ordering replacement valve parts, please specify in your purchase order: “ALL PARTS MUST BE DOCUMENTEDAS NEW AND SOURCED FROM DRESSER, INC.”1900 Series Safety Valve (July/2010) | 57