BS Stock No. 2201-273

VALVE,BUTTERFLY,DOUBLE FLANGED, SIZE : 8"
Item Specifications:
VALVE, BUTTERFLY, DOUBLE FLANGED, LONG PATTERN, FLANGED ENDS AS PER
ANSI B 16.5 CLASS 150 RF,VALVES CONFORMING TO API 609(LATEST
EDITION), 260 PSIG SHUT-OFF PRESSURE,
SHAFT SIZE TO COMPLY TO AWWA C504 CLASS B,
TIGHT SHUT OFF TYPE, ZERO LEAKAGE, DISC POSITION INDICATOR,
VALVES SUITABLE FOR SEA WATER SERVICE AT DESIGN TEMP. OF 165 DEG.F,
FLOW VELOCITY : 9 FEET PER SEC,
GEAR OPERATED.
MATERIAL SPECIFICATIONS
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BODY : ASTM A 216 GR. WCB, RUBBER LINED,
FULL BUNA-N SEAT & LINER (INER TO EXTEND UP TO FACE OF FLANGES).
DISC :ALUMINIUM BRONZE TO ASTM B 148 UNS C 95500.
STEM / SHAFT :MONEL K 500.
STEM BUSHINGS :BRONZE
DISC SCREWS/TAPER PINS:MONEL K 500
OTHER TRIM MATERIALS :MONEL K 500.
HYDROSTATIC TEST PRESSURES: BODY 390 PSIG, SEAT 286 PSIG.
VALVE SIZE IN INCH
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8
IMPORTANT DATA
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DIMENSIONS OF THE VALVES SHALL BE SUITABLE TO PERMIT FREE MOVEMENT
OF DISC CONSIDERING THE INSIDE DIAMETER OF CONNECTING 8" SCH 40
CEMENT LINED PIPES AND FLANGES.
CEMENT LINING THK. = 0.25 INCH.
MATING FLANGES = WELD NECK FLANGES TO ANSI B 16.5, CLASS 150 RF.
SO,BORE OF CEMENT LINED PIPES / FLANGES IS 7.48 INCH (190 mm).