Name: Relief Valve - 800QRW OP
Availability: InStock

Description

Part #	NB Cert. #	Body Material	Wt (lbs)	Size
800QRW OP	51253	304 Stainless Steel	3.9	½” Male Socket Weld inlet x ¾” Female Socket Weld outlet

Design Features
National Board Certification #: 51253 Set Pressure Range: 250-300 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. 50-400 PSI Set Pressure Range Coming Soon ***	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.

800 OP Series Capacity Chart Slope = 0.216 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
50	15.1	1.1	69.0	0.9	52.9	2.0	119.1	1.4	85.1	2.1	126.6
75	21.0	1.6	96.2	1.2	73.7	2.8	166.1	2.0	118.6	2.9	176.5
100	26.9	2.1	123.4	1.6	94.6	3.6	213.1	2.5	152.2	3.8	226.4
125	32.9	2.5	150.6	1.9	115.4	4.3	260.1	3.1	185.8	4.6	276.4
150	38.8	3.0	177.8	2.3	136.3	5.1	307.1	3.7	219.3	5.4	326.3
175	44.8	3.4	205.0	2.6	157.2	5.9	354.2	4.2	252.9	6.3	376.3
200	50.7	3.9	232.2	3.0	178.0	6.7	401.2	4.8	286.5	7.1	426.2
225	56.6	4.3	259.4	3.3	198.9	7.5	448.2	5.3	320.0	7.9	476.1
250	62.6	4.8	286.6	3.7	219.7	8.3	495.2	5.9	353.6	8.8	526.1
275	68.5	5.2	313.8	4.0	240.6	9.0	542.2	6.5	387.2	9.6	576.0
300	74.5	5.7	341.0	4.4	261.5	9.8	589.2	7.0	420.7	10.4	625.9
325	80.4	6.1	368.2	4.7	282.3	10.6	636.2	7.6	454.3	11.3	675.9
350	86.3	6.6	395.4	5.1	303.2	11.4	683.2	8.1	487.9	12.1	725.8
375	92.3	7.0	422.6	5.4	324.0	12.2	730.2	8.7	521.4	12.9	775.7
400	98.2	7.5	449.8	5.7	344.9	13.0	777.2	9.3	555.0	13.8	825.7

Additional information

Inlet Port Size	1/2"
Outlet Port Size	3/4"
Material Type	Stainless
Available in 2 pieces	Yes
Assembly Options	Dual Assembly With Unions, Dual Assembly Without Unions, Single Valve