166:HReturn 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
X721	0.8	4.6	4.1	5.2	5.7	5.4	44	57	36	31	Get Quote
X894	0.7	5.1	4.3	5.5	6.0	5.6	46	60	37	33	Get Quote
X866	0.8	5.6	5.0	6.4	7.0	6.5	54	70	43	38	Get Quote
X683	1.0	6.0	6.0	7.6	8.4	7.9	64	84	52	45	Get Quote
X872	1.2	6.4	7.0	8.9	9.8	9.2	75	98	61	53	Get Quote
X684	1.7	5.8	7.6	9.7	10.6	9.9	81	106	66	57	Get Quote
X653	2.5	6.5	10.3	13.1	14.4	13.5	110	144	89	78	Get Quote
X161	4.0	7.0	14.0	17.8	19.6	18.3	150	196	121	106	Get Quote
X429	10.3	6.7	21.5	27.4	30.1	28.1	230	300	187	163	Get Quote

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