Name: Relief Valve - 804R QR
SKU: 1314
Availability: InStock

Description

Part #	NB Cert. #	Body Material	Wt (lbs)	Size
804R QR	51219	Ductile Iron Casting 60-40-18	6.3	3/4” FNPT inlet x 1” FNPT outlet

Design Features
National Board Certification #: 51219 Set Pressure Range: 75-400 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.

804R Series Capacity Chart Slope = 1.63 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	158.4	12.1	725.7	9.3	556.4	20.9	1253.7	14.9	895.3	22.2	1332.0
100	203.3	15.5	931.0	11.9	713.8	26.8	1608.4	19.1	1148.6	28.5	1708.8
125	248.1	18.9	1136.3	14.5	871.2	32.7	1963.1	23.4	1401.9	34.8	2085.6
150	292.9	22.4	1341.6	17.1	1028.6	38.6	2317.8	27.6	1655.2	41.0	2462.5
175	337.7	25.8	1546.9	19.8	1186.0	44.5	2672.5	31.8	1908.5	47.3	2839.3
200	382.6	29.2	1752.2	22.4	1343.4	50.5	3027.3	36.0	2161.8	53.6	3216.1
225	427.4	32.6	1957.5	25.0	1500.8	56.4	3382.0	40.3	2415.2	59.9	3593.0
250	472.2	36.0	2162.8	27.6	1658.2	62.3	3736.7	44.5	2668.5	66.2	3969.8
275	517.0	39.5	2368.1	30.3	1815.6	68.2	4091.4	48.7	2921.8	72.4	4346.7
300	561.9	42.9	2573.4	32.9	1973.0	74.1	4446.1	52.9	3175.1	78.7	4723.5
325	606.7	46.3	2778.7	35.5	2130.4	80.0	4800.8	57.1	3428.4	85.0	5100.3
350	651.5	49.7	2984.0	38.1	2287.8	85.9	5155.5	61.4	3681.7	91.3	5477.2
375	696.3	53.2	3189.3	40.8	2445.3	91.8	5510.2	65.6	3935.0	97.6	5854.0
400	741.2	56.6	3394.6	43.4	2602.7	97.7	5864.9	69.8	4188.3	103.8	6230.8

Additional information

Inlet Port Size	3/4"
Outlet Port Size	1"
Material Type	Ductile
Assembly Options	Dual Assembly With Unions, Dual Assembly Without Unions, Single Valve