Type 441 ANSI 442 ANSI. Facts. Flanged Safety Relief Valves spring loaded. The-Safety-Valve.com. US Units
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1 Type 441 ANSI 442 ANSI Flanged Safety Relief Valves spring loaded US Units Facts The-Safety-Valve.com LWN E D
2 Conventional design 40 Cap H Adjusting screw Lock nut Upper spring plate 9 Bonnet 12 Spindle 54 Spring 14 Split ring 55 Stud 56 Nut 17 Lower spring plate 8 Guide with bushing 57 Pin 61 Ball 7 Disc 5 Seat 1 Body 02/02
3 Conventional design Materials Item Component Type 4412 / 4422 ANSI Type 4414 ANSI 1 Body 5 Seat 7 Disc 8 Guide with bushing 9 Bonnet 12 Spindle 14 Split ring 16/17 Spring plate 18 Adjusting screw with bushing 19 Lock nut 40 Cap H2 54 Spring standard Spring optional 55 Stud 56 Nut 57 Pin 61 Ball SA 216 WCB SA 351 CF8M Hardened stainless steel , , Chrome or carbon steel tenifer Chrome steel tenifer , , , , Ductile Gr , SA 216 WCB SA 351 CF8M, SA 479, SA Ti Chrome steel Steel PTFE PTFE Chrome steel PTFE PTFE Steel or L13 or Gr , , Carbon steel Steel B8M H 8M Graphite / Graphite / Graphite / 316 Graphite / Hardened stainless steel 316 Please notice: Modifications reserved by LESER. If several materials are specified LESER defines the material. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. 02/03
4 Balanced bellows design Cap H2 Adjusting screw 19 Lock nut 16 Upper spring plate 9 Bonnet 12 Spindle 54 Spring Split ring Lower spring plate 55 Stud 56 Nut 8 Guide with bushing 11 Bonnet spacer 22 Lift stopper 15 Bellows 57 Pin 61 Ball 7 Disc 5 Seat 1 Body 02/04
5 Balanced bellows design Materials Item Component Type 4412 / 4422 ANSI Type 4414 ANSI 1 Body 5 Seat 7 Disc 8 Guide with bushing 9 Bonnet 11 Bonnet spacer 12 Spindle 14 Split ring 15 Bellows 16/17 Spring plate 18 Adjusting screw with bushing 19 Lock nut 22 Lift stopper 40 Cap H2 54 Spring standard Spring optional 55 Stud 56 Nut 57 Pin 61 Ball SA 216 WCB SA 351 CF8M Hardened stainless steel , , Chrome or carbon steel tenifer Chrome steel tenifer , , , , Ductile Gr , SA 216 WCB SA 351 CF8M, SA 479, SA Ti Chrome steel Ti 316Ti Steel PTFE PTFE Chrome steel PTFE PTFE Steel or L13 or Gr , , Carbon steel B8M B8M M 8M Graphite / Graphite / Graphite / 316 Graphite / Hardened stainless steel 316 Please notice: Modifications reserved by LESER. If several materials are specified LESER defines the material. LESER can upgrade materials without notice. Every part can be replaced by other material acc. to customer specification. 02/05
6 How to order Article numbers Article numbers Valve size 1" x 2" 1 1 / 2 " x 2" 1 1 / 2 " x 2 1 / 2 " 2" x 3" 3" x 4" 4" x 6" Actual Orifice diameter d 0 [mm] Actual Orifice area A 0 [mm 2 ] Body material: (WCB) Bonnet H2 Art.-No closed H3 Art.-No H4 Art.-No open H3 Art.-No Body material: (CF8M) Bonnet H2 Art.-No closed H4 Art.-No /09
7 Dimensions and weights US Units Valve size 1" x 2" 1 1 / 2 " x 2" 1 1 / 2 " x 2 1 / 2 " 2" x 3" 3" x 4" 4" x 6" Actual Orifice diameter d0 [inch] Actual Orifice area A0 [inch 2 ] Weight [lbs] with bellows Center to face Inlet a 4 1 / / / / / / 8 [inch] Outlet b 4 1 / / / / / 2 9 Height (H4) Standard H max / / / / / / 32 [inch] Bellows H max / / / / / / 2 Support brackets A 11 [inch] B 6 1 / 4 (drilled only on request) C Ø 3 / 4 D 9 7 / 8 E 25 Body material: (WCB) ANSI Flange Inlet CL150 or CL300 Class 1) Outlet CL150 Body material: (CF8M) ANSI Flange Inlet CL150 or CL300 CL150 or CL300 Class 1) Outlet CL150 CL150 1) Standard flange rating. For other flange drillings and facings please refer to page 02/14. E D C B A Conventional design Support brackets Balanced bellows design 02/11
8 Pressure temperature ratings US Units Valve size 1" x 2" 1 1 / 2 " x 2" 1 1 / 2 " x 2 1 / 2 " 2 x 3" 3 x 4" 4 x 6" Actual Orifice diameter d0 [inch] Actual Orifice area A0 [inch 2 ] Body material: (WCB) ANSI Flange Inlet CL150 or CL300 Class 1) Outlet CL150 Minimum set pressure p [psig] S/G/L Min. set pressure 2) p [psig] S/G/L standard bellows Min. set pressure low press. bellows p [psig] S/G/L Maximum set pressure Max. set pressure with special spring p [psig] S/G/L p [psig] S/G/L Temperature 3) min. [ F] -121 acc. to DIN EN max. [ F] +842 Temperature 3) min. [ F] -20 acc. to ASME max. [ F] +800 Body material: (CF8M) ANSI Flange Inlet CL150 or CL300 CL150 or C300 Class 1) Outlet CL150 CL150 Minimum set pressure p [psig] S/G/L Min. set pressure 2) p [psig] S/G/L standard bellows Min. set pressure low press. bellows Maximum set pressure Max. set pressure with special spring p [psig] S/G/L p [psig] S/G/L p [psig] S/G/L Temperature 3) min. [ F] acc. to DIN EN max. [ F] Temperature 3) min. [ F] acc. to ASME max. [ F] ) For flange rating class 150 the pressure temperature ratings according to ASME ANSI B apply. 2) Min. set pressure standard bellows = Max. set pressure low pressure bellows. 3) Between -10 C and lowest temperature indicated AD 2000-Merkblatt W10 shall be taken into account. 02/13
9 Available Options For further information refer to Accessories and Options, page 99/01 Heating jacket H29, H30: Couplings G 3 / 8, G 3/ 4 H31, H32: Flanges DN 15, DN 25 Drain hole J18: G 1 / 4 J19: G 1 / 2 Open bonnet See Art.-No. O-ring-disc J20: FFKM C J21: CR K J22: EPDM D J23: FKM L Disc with inserted sealing plate J44: PTFE-FDA J48: PCTFE J49: SP bellows J68: Open bonnet J78: Closed bonnet Conversion kit for stainless steel bellows See Art.-No. page 02/15 Screwed cap H2 H2 Plain lever H3 H3 Packed lever H4 H4 Test gag J69: H4 J70: H2 Lift indicator J39: Adaptor H4 J93: Lift indicator O-ring-damper H2 J65 O-ring-damper H4 J66 02/16
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