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Type 437 How to order – Article numbers Type 437 Type 437 Male Outlet body 1 / 2 " Pull button H3 Conventional design Type 437 Female Outlet body 1" Cap H2 Conventional design Type 437 Flanged connection Outlet body 1" Cap H2 Conventional design Type 437 Male Outlet body 1 / 2 " Packed knob H4 Long version 01/06 LWN 481.01-E
Type 437 How to order – Article numbers Type 437 Article numbers Conventional design Actual Orifice diameter d 0 [mm] 10 Actual Orifice area A 0 [mm 2 ] 78,5 Actual Orifice diameter d 0 [inch] 0,394 Actual Orifice area A 0 [inch 2 ] 0,122 Base / Inlet body material: 1.4104 (430) H2 Art.-No. 4373. 2602 H3 Art.-No. 4373. p max = 10 bar g 2603 H4 Art.-No. 4373. 2604 p [barg] S/G/L 0,1 – 93 p [psig] S/G/L 1,5 – 1349 Base / Inlet body material: 1.4404 (316L) H2 Art.-No. 4374. 3142 H4 Art.-No. 4374. 3144 p [barg] S/G/L 0,1 – 68 p [psig] S/G/L 1,5 – 986 Article numbers Long version Actual Orifice diameter d 0 [mm] 6 6 10 Actual Orifice area A 0 [mm 2 ] 28,3 28,3 78,5 Actual Orifice diameter d 0 [inch] 0,236 0,236 0,394 Actual Orifice area A 0 [inch 2 ] 0,044 0,044 0,122 Base / Inlet body material: 1.4104 (430) H2 Art.-No. 4373. 2622 – 2612 H4 Art.-No. 4373. 2624 – 2614 p [barg] S/G/L 180 – 365 – 93 –180 p [psig] S/G/L 2611 – 5294 – 1349 – 2611 Base / Inlet body material: 1.4404 (316L) H2 Art.-No. 4374. 3122 3132 3153 H4 Art.-No. 4374. 3124 3134 3154 p [barg] S/G 180 – 365 L 180 – 380 1) S/G/L 68 –180 p [psig] S/G 2611 – 4786 L 2611 – 5511 S/G/L 986 – 2611 1) At the moment no TÜV approval, useable for thermal expansion. Use “Long version” only for set pressure exeeding set pressure range of “Standard” model. For selection of inlet and outlet connection please refer to page 04/04 – 04/05. LWN 481.01-E 01/07
Page 1 and 2: Compact Performance Safety Relief V
Page 3 and 4: General Type 437 Orifice diameter d
Page 5 and 6: Contents Type 459 05/01 Materials
Page 7 and 8: General Information General Applica
Page 9 and 10: Valve finder General How to find th
Page 11 and 12: Valve selection General Valve size
Page 13 and 14: How to use General Sample Determina
Page 15 and 16: How to use General 7 Base of capaci
Page 17 and 18: Sour gas service (H 2 S) General No
Page 19 and 20: Type Type 437 Type 437 Packed knob
Page 21 and 22: Type 437 Available designs - materi
Page 23: Type 437 Type 437 4 5 6 Options Doc
Page 27 and 28: Type 437 Dimensions and weights - M
Page 29 and 30: Type 437 Dimensions and weights - U
Page 31 and 32: Type 437 Order information - Spare
Page 33 and 34: Type 437 Approvals Type 437 Approva
Page 35 and 36: Type 437 Capacities - Air Capacitie
Page 37 and 38: Type 437 Determination of coefficen
Page 39 and 40: Type Type 438 Packed knob H4 Conven
Page 43 and 44: Type 438 4 5 6 Options Documentatio
Page 45 and 46: Type 438 How to order - Article num
Page 51 and 52: Type 438 Order information - Spare
Page 53 and 54: Type 438 Approvals Approvals Actual
Page 55 and 56: Type 438 Determination of coefficen
Page 57 and 58: Type 439 Packed knob H4 Type 439 Sa
Page 61 and 62: Type 439 4 5 6 Options Documentatio
Page 63 and 64: Type 439 Pressure temperature ratin
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Accessories and Options Caps and le
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Accessories and Options Available c
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Accessories and Options Sealing sur
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Accessories and Options Heating jac
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Type Type 459 Plain lever H3 459 Sa
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Type 459 Available designs - materi
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Type 459 4 5 6 Options Documentatio
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Type 459 How to order - Article num
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Type 459 Dimensions and weights - M
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Type 459 Dimensions and weights - U
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Type 459 Pressure temperature ratin
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Type 459 Order information - Spare
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Type 459 Approvals Europe Approvals
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Type 459 Capacities - US Units Capa
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Type 459 HDD Safety Relief Valves H
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Type 459 HDD Available designs - ma
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Type 459 HDD 4 5 6 Options Document
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Type 459 HDD How to order - Article
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Type Type 462 Plain lever H3 462 Sa
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Type 462 Available designs - materi
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Type 462 4 5 6 Options Documentatio
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Type 462 How to order - Article num
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Type 462 Dimensions and weights - M
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Type 462 Dimensions and weights - U
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Type 462 Pressure temperature ratin
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Type 462 Order information - Spare
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Type 462 Approvals Europe Approvals
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Type 462 Capacities - US Units Capa
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Type 462 HDD Safety Relief Valves H
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Type 462 HDD Available designs - ma
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Type 462 HDD 4 5 6 Options Document
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Type 462 HDD How to order - Article
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Type 462 HDD Approvals Europe Appro
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Type 462 HDD Capacities - US Units
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Accessories and Options Contents Ch
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Accessories and Options Overview Op
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Accessories and Options Caps and le
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Accessories and Options Available c
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Accessories and Options Sealing sur
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Accessories and Options Heating jac
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Accessories and Options Balanced be
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Accessories and Options O-ring damp
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Accessories and Options Lift restri
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