Hemco High Flow 4" 300#Return to Hemco High Flow

Flow Rating

The table on the following page shows the range of flow rates available for common fluids. Each size valve has several different spring options that can be used to vary the closing flow rate. Please contact MGM for assistance in choosing the proper spring for your specific application.

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			LIQUID FLOW RATES (GALLONS PER MINUTE)				VAPOR FLOW RATES (SCFM*)
SPRING	Delta P	CV	Water	PROPANE	AMMONIA	BUTANE	AIR	PROPANE	AMMONIA	BUTANE
S-60	0.8	118.2	102.8	144.4	130.9	134.6	1,101	892	1,436	777	Get Quote
S-80	1.0	117.7	115.3	162.0	146.8	150.9	1,235	1,001	1,611	872	Get Quote
S-90	1.1	117.3	125.3	175.9	159.5	163.9	1,342	1,087	1,749	947	Get Quote
S-10	1.7	116.8	150.8	211.8	191.9	197.3	1,615	1,309	2,106	1,140	Get Quote
S-12	1.3	143.1	165.4	232.3	210.5	216.4	1,771	1,435	2,309	1,250	Get Quote
S-14	1.8	143.2	194.4	273.0	247.4	254.3	2,081	1,687	2,714	1,469	Get Quote
S-16	2.7	144.4	238.0	334.3	303.0	311.5	2,549	2,066	3,324	1,799	Get Quote
S-18	3.0	142.9	246.5	346.2	313.8	322.6	2,640	2,139	3,443	1,863	Get Quote
S-20	4.2	144.5	297.8	418.2	379.0	389.7	3,189	2,584	4,159	2,251	Get Quote
S-25	6.0	145.8	355.9	499.8	453.0	465.7	3,811	3,089	4,970	2,690	Get Quote
S-30	8.2	143.2	409.4	574.9	521.0	535.7	4,384	3,553	5,717	3,094	Get Quote
S-38	13.5	146.0	536.6	753.6	682.9	702.1	5,746	4,657	7,493	4,056	Get Quote

* Springs S-38, S-45, and S-50 require longer poppets, E dimension is 6.813”

*Vapor flow rates are shown at 60 degrees F, 100 psig