Birkett Technical Catalogue - Safety Systems UK Ltd

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Graph 2.0 Factor Ff – For application sizing and capacity determination of balanced bellows safety relief valves against variable and constant back pressure – vapours and gases only. Graph 3.0 Use the curve to evaluate back pressure correction factor Fb, for pilot valves and for conventional valves with constant back pressure use. 87
Graph 4.0 Factor Fl – For application sizing and capacity determination of balanced bellows safety relief valves against variable or constant back pressure – liquids only (10% overpressure). Graph 5.0 Factor Fp – For low set pressure – vapours and gases only. 88
Page 1 and 2:
Pressure & Flame Protection Safety
Page 3 and 4:
CONTENTS Page Birkett Range 3 Intro
Page 5 and 6:
INTERNATIONAL APPROVALS AND AUTHORI
Page 7 and 8:
FEATURES AND BENEFITS Design verifi
Page 9 and 10:
THE EFFECT OF BACK PRESSURE The con
Page 11 and 12:
LIFT CYCLE Stage 1 - Closed Inlet p
Page 13 and 14:
WB 300 - BALANCED BELLOWS GAS TYPE
Page 15 and 16:
WB 300 - BALANCED BELLOWS GAS TYPE
Page 17 and 18:
FERRULE Ferrule (government ring) A
Page 19 and 20:
RECOMMENDED MATERIAL TEMPERATURE RA
Page 21 and 22:
VALVE SELECTION TABLE D - 0.110 in
Page 23 and 24:
VALVE SELECTION TABLE E - 0.196 in
Page 25 and 26:
VALVE SELECTION TABLE F - 0.307 in
Page 27 and 28:
VALVE SELECTION TABLE G - 0.503 in
Page 29 and 30:
VALVE SELECTION TABLE H - 0.785 in
Page 31 and 32:
VALVE SELECTION TABLE - 1.287 in 2
Page 33 and 34:
VALVE SELECTION TABLE K - 1.838 in
Page 35 and 36:
VALVE SELECTION TABLE L - 2.853 in
Page 37 and 38: VALVE SELECTION TABLE M - 3.60 in 2
Page 39 and 40: VALVE SELECTION TABLE N - 4.34 ins
Page 41 and 42: VALVE SELECTION TABLE P - 6.38 ins
Page 43 and 44: VALVE SELECTION TABLE Q - 11.05 in
Page 45 and 46: VALVE SELECTION TABLE R - 16.00 in
Page 47 and 48: VALVE SELECTION TABLE T - 26.00 in
Page 49 and 50: BLOWDOWN RING SETTING The blowdown
Page 51 and 52: SEAT TIGHTNESS / SEAT LEAKAGE TESTI
Page 53 and 54: FEATURES AND BENEFITS Design verifi
Page 55 and 56: D SERIES THERMAL RELIEF VALVES ITEM
Page 57 and 58: SAFEFLO - SAFETY AND THERMAL RELIEF
Page 59 and 60: D SERIES DIMENSIONS Female screwed
Page 61 and 62: FEATURES AND BENEFITS Close system
Page 63 and 64: MODE OF OPERATION Safeset consists
Page 65 and 66: STAGES OF OPERATION - TYPE 2 PILOT
Page 67 and 68: MODULATING ACTION - TYPE 8 The Type
Page 69 and 70: STAGE 4 System pressure above set p
Page 71 and 72: MATERIALS OF CONSTRUCTION - MAIN VA
Page 73 and 74: ACCESSORIES Back flow preventer Hig
Page 75 and 76: ACCESSORIES Others Similar to the s
Page 77 and 78: SAFESET PILOT FIGURE NUMBERING SYST
Page 79 and 80: Size Orifice Rating A (ins) D (ins)
Page 81 and 82: FLANGE PRESSURE / TEMPERATURE LIMIT
Page 83 and 84: (4) Constant, Fb Fb = 2k k-1 Pb P k
Page 85 and 86: BACKPRESSURE AND BLOWDOWN LIMITS Fi
Page 87: Table 3 Representative data on liqu
Page 91 and 92: Pressure Protection 90
Page 93 and 94: SATURATED STEAM CAPACITY CHART WB 4
Page 95 and 96: AIR CAPACITY CHART Pilot:Types 2, 4
Page 97 and 98: DUAL OUTLET / FULL BORE PILOT VALVE
Page 99 and 100: DEFINITION OF TERMS Pressure Relief
Page 101 and 102: PRESSURE TERM RELATIONSHIP Pressure
Page 103 and 104: SAFETY RELIEF VALVES B/C Series D S
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Birkett Technical Catalogue - Safety Systems UK Ltd

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