Birkett Technical Catalogue - Safety Systems UK Ltd

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VALVE SELECTION GUIDE D – 0.110 in 2 – 71 mm 2 TEMPERATURE LIMITS API 526 538 1000 427 800 232 450 -29 -20 -59 -75 -268 -450 SPRING BODY STAINLESS STEEL CARBON STEEL TUNGSTEN SS - CF8M CARBON STEEL - WCB CS - WC6 SET PRESSURE - PSIG 0 7 8 9 10 11 1 2 3 4 5 6 12 13 14 15 16 17 1000 538 500 900 450 800 400 700 350 600 300 500 250 400 200 300 150 100 200 50 100 0 0 -50 -100 -100 -200 -150 -300 -200 -400 -250 -450 -268 100 200 300 400 500 1000 2000 3000 4000 5000 6000 SET PRESSURE - BAR G. 0 10 20 30 34.5 50 69 100 200 300 413.8 ORIFICE D (All dimensions in inches) Size Rating A B C* D E F G H† Wt (ins) lbs (kg) 1 x 2 150 x 150 4.125 1.437 13.875 4.500 0.582 2 3/8 3/4 40 (18) 300 x 150 4.125 1.437 13.875 4.500 0.582 2 3/8 3/4 40 (18) 600 x 150 4.125 1.437 13.875 4.500 0.582 2 3/8 3/4 42 (19) 1 1 /2 x 2 900 x 300 4.125 1.750 25.000 5.500 0.625 5 3/8 3/4 90 (41) 1500 x 300 4.125 1.750 25.000 5.500 0.625 5 3/8 3/4 97 (44) 1 1 /2 x 3 2500 x 300 5.500 2.375 26.875 6.500 0.625 5 3/8 3/4 115 (52) * – If a gag is fitted, add 0.5 ins. – If a bellows is fitted in the 1 x 2 inch valve add 1.125 inch. – 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. 19
VALVE SELECTION TABLE D – 0.110 in 2 – 71 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 1 x 2 150#RF 150#RF - - 285 185 80 - 285 230 2 1 x 2 300#RF 150#RF - - 740 615 410 - 285 230 3 1 x 2 600#RF 150#RF - - 1480 1235 825 - 285 230 WCB 4 1 1 /2 x 2 900#RF 300#RF - - 2220 1845 1235 - 600 500 5 1 1 /2 x 2 1500#RF 300#RF - - 3705 3080 2060 - 600 500 6 1 1 /2 x 3 2500#RF 300#RF - - 6000 5135 3430 - 740 500 7 1 x 2 300#RF 150#RF - - - - 510 225 285 230 8 1 x 2 600#RF 150#RF - - - - 1015 445 285 230 9 1 1 /2 x 2 900#RF 300#RF WC6 - - - - 1525 670 600 500 10 1 1 /2 x 2 1500#RF 300#RF - - - - 2540 1115 600 500 11 1 1 /2 x 3 2500#RF 300#RF - - - - 4230 1860 740 500 12 1 x 2 150#RF 150#RF 275 275 - - - - 275 230 13 1 x 2 300#RF 150#RF 720 720 - - - - 275 230 14 1 x 2 600#RF 150#RF 1440 1440 - - - - 275 230 15 1 1 CF8M /2 x 2 900#RF 300#RF 2160 2160 - - - - 600 500 16 1 1 /2 x 2 1500#RF 300#RF 3600 3600 - - - - 600 500 17 1 1 /2 x 3 2500#RF 300#RF 4000 6000 - - - - 720 500 RF=Raised Face Minimum set pressure limits for metal seat trim Conventional – 7 psig Bellows - Gas – 22 psig Bellows - Liquid – 59 psig* Conventional – 2 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 There is no requirement to have an high pressure version for this orifice. 20
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: RECOMMENDED MATERIAL TEMPERATURE RA
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 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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