166:SReturn 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
X1255R	3.3	746.0	1,349	1,717	1,889	1,765	14,445	18,838	11,707	10,197	Get Quote
X1256R	3.7	753.9	1,458	1,856	2,042	1,908	15,612	20,360	12,653	11,020	Get Quote
X1257R	4.7	731.1	1,585	2,017	2,219	2,074	16,972	22,134	13,755	11,980	Get Quote
X1258R	5.4	743.6	1,728	2,199	2,420	2,261	18,504	24,131	14,996	13,061	Get Quote
X1259R	5.6	755.6	1,788	2,276	2,504	2,340	19,146	24,969	15,517	13,515	Get Quote

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