166:IReturn to Excess Flow Check Valve - Model 166

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	NH3	PROPANE	BUTANE	AIR	NH3	PROPANE	BUTANE
X592	0.5	14.1	10	13	14	13	107	140	87	76	Get Quote
X591	1.5	16.3	20	26	28	26	214	279	174	151	Get Quote
X863	1.6	17.4	22	28	31	29	236	307	191	166	Get Quote
X742	2.7	16.4	27	34	38	35	289	377	234	204	Get Quote
X371	3.0	17.9	31	40	43	41	332	433	269	234	Get Quote
X521	12.6	16.9	60	76	84	79	643	838	521	454	Get Quote
X1098	14.6	16.5	63	80	88	82	675	880	547	476	Get Quote

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