Name: Relief Valve - 801
Availability: InStock

Description

Part #	NB Cert. #	Body Material	Wt (lbs)	Size
801	51152	A36 Carbon Steel Black Oxide Coated	3.2	½” MNPT inlet x ¾” FNPT outlet

Design Features
National Board Certification #: 51253 Set Pressure Range: 50-400 PSI in 25 PSI increments. Special Settings can be made at no extra charge and typically takes 1-2 extra days; Each valve undergoes 3 separate test sequences for set pressures and seals, and then are lock-wired for security.	All Cyrus Shank relief valves are manufactured in accordance with ASME Boiler and Pressure Vessel Code Section VIII Division I and stamped with the ASME Certification Mark with UV Designator. All Cyrus Shank relief valve capacities are certified by the National Board of Boiler and Pressure Vessel Inspectors and stamped with the NB Certification Mark.

801 Series Capacity Chart Slope = 0.73 SCFM/PSIA Standard Conditions [60 ˚F, 1 Atm]
Set Pressure (PSIG)	Air SCFM	Air lb/min	Air lb/hr	NH3 lb/min	NH3 lb/hr	R-22 lb/min	R-22 lb/hr	R-290 lb/min	R-290 lb/hr	R-404A lb/min	R-404A lb/hr
75	71.0	5.4	324.8	4.2	249.1	9.4	561.2	6.7	400.8	9.9	596.2
100	91.0	6.9	416.7	5.3	319.5	12.0	720.0	8.6	514.2	12.7	764.9
125	111.1	8.5	508.6	6.5	390.0	14.6	878.8	10.5	627.6	15.6	933.6
150	131.2	10.0	600.5	7.7	460.4	17.3	1037.5	12.3	741.0	18.4	1102.3
175	151.3	11.5	692.4	8.8	530.9	19.9	1196.3	14.2	854.3	21.2	1271.0
200	171.3	13.1	784.4	10.0	601.4	22.6	1355.1	16.1	967.7	24.0	1439.7
225	191.4	14.6	876.3	11.2	671.8	25.2	1513.9	18.0	1081.1	26.8	1608.4
250	211.5	16.1	968.2	12.4	742.3	27.9	1672.7	19.9	1194.5	29.6	1777.0
275	231.6	17.7	1060.1	13.5	812.8	30.5	1831.4	21.8	1307.9	32.4	1945.7
300	251.6	19.2	1152.0	14.7	883.2	33.2	1990.2	23.7	1421.3	35.2	2114.4
325	271.7	20.7	1243.9	15.9	953.7	35.8	2149.0	25.6	1534.7	38.1	2283.1
350	291.8	22.3	1335.8	17.1	1024.2	38.5	2307.8	27.5	1648.1	40.9	2451.8
375	311..9	23.8	1427.7	18.2	1094.6	41.1	2466.5	29.4	1761.5	43.7	2620.5
400	331.9	25.3	1519.6	19.4	1165.1	43.8	2625.3	31.2	1874.9	46.5	2789.2

Additional information

Outlet Port Size	3/4"
Assembly Options	Dual Assembly With Unions, Dual Assembly Without Unions, Single Valve