Birkett Technical Catalogue - Safety Systems UK Ltd

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VALVE SELECTION GUIDE K – 1.838 in 2 – 1185 mm 2 TEMPERATURE LIMITS API 526 538 1000 427 800 232 450 -29 -20 -59 -75 -268 -450 SPRING BODY INCONEL CS - WC6 STAINLESS STEEL CARBON STEEL TUNGSTEN SS - CF8M CARBON STEEL - WCB SET PRESSURE - PSIG 0 1 6 10 11 7 8 12 + 13 14 100 200 300 400 500 600 700 9 2 3 4 1000 900 800 700 600 500 400 300 538 500 450 400 350 300 250 200 150 200 100 100 50 0 0 14 -50 -100 -100 -200 -300 -150 -200 -400 -250 -450 -268 1000 2000 3000 12 13 5 SET PRESSURE - BAR G. 0 10 20 30 40 48.3 69 100 150 206.9 ORIFICE K (All dimensions in inches) Size Rating A B C* D E F G H† Wt (ins) lbs (kg) 3 x 4 150 x 150 6.125 2.000 21.750 6.375 0.875 3 3/8 3/4 108 (49) 300 x 150 6.125 2.000 21.750 6.375 0.875 3 3/8 3/4 108 (49) 600 x 150 7.250 2.125 23.500 7.125 0.875 3 3/8 3/4 141 (64) 3 x 6 900 x 150 7.812 2.562 40.000 8.500 0.937 5 3/4 3/4 339 (154) 1500 x 300 7.750 2.875 40.000 8.500 0.875 5 3/4 3/4 353 (160) * – If a gag is fitted, add 0.5 ins. – If a lever is fitted, add a maximum of 3.5 inch. (Only if flange rating is 600# or less.) – For certified height (c), consult factory. † Vent hole ‘H’ on bellows valves only. 31
VALVE SELECTION TABLE K – 1.838 in 2 – 1185 mm 2 Flanges ANSI Key Valve size No. inlet x outlet Inlet Outlet Body (ins) Mat’l -76°F to -450°F -60°C to -268°C Max. Set Pressure (psig) and Temperature Limits -21°F to -75°F -30°C to -59°C 100°F to -20°F 38°C to -29°C 450°F 800°F 1000°F 232°C 427°C 538°C Max. Back Pressure (psig) Conventional Valve Balanced Bellows Valve 1 3 x 4 150#RF 150#RF - - 285 185 80 - 285 150 2 3 x 4 300#RF 150#RF - - 740 615 410 - 285 150 3 3 x 4 600#RF 150#RF WCB - - 1480 1235 825 - 285 200 4 3 x 6 900#RF 150#RF - - 2220 1845 1235 - 285 200 5 3 x 6 1500#RF 300#RF - - 2220 2220 2060 - 600 200 6 3 x 4 300#RF 150#RF - - - - 510 215 285 150 7 3 x 4 600#RF 150#RF - - - - 815 445 285 200 WC6 8 3 x 6 900#RF 150#RF - - - - 1225 670 285 200 9 3 x 6 1500#RF 300#RF - - - - 2040 1115 600 200 10 3 x 4 150#RF 150#RF 275 275 - - - - 275 150 11 3 x 4 300#RF 150#RF 525 720 - - - - 275 150 12 3 x 4 600#RF 150#RF CF8M 600 1440 - - - - 275 200 13 3 x 6 900#RF 150#RF 600 2160 - - - - 275 200 14 3 x 6 1500#RF 300#RF 750 2220 - - - - 600 200 RF=Raised Face Minimum set pressure limits for metal seat trim Conventional – 5 psig Bellows - Gas – 13 psig Bellows - Liquid – 26 psig* Conventional – 1.5 psig (Inverted) *For liquid bellows valves below this pressure refer to factory Note: Soft seated valves require a minimum set pressure of 15 psig. High Pressure Version. Certain spring materials can not be used in the low pressure version of the valve, up to the maximum pressure. If the required set pressure with your choice of spring material is in excess of the figure shown in the table either choose another material or add “H” to the valve accessories to select an high pressure valve. Inlet Max. Set Spring Material (pressures in Psig) Orifice rating Pressure Psig Carbon st. 316 SS Tungsten 17/4PH 17/4PH NACE Inconel X750 K 150# 285 n/a n/a n/a n/a n/a n/a K 300# 740 n/a 450 n/a n/a 600 n/a K 600# 1480 n/a 750 n/a n/a 570 1070 32
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: VALVE SELECTION TABLE - 1.287 in 2
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 and 88:
Table 3 Representative data on liqu
Page 89 and 90:
Graph 4.0 Factor Fl - For applicati
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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