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Products/ Valves/ Non Return Valve (check valve)

Application

These check valves are designed for installation in liquid, suction and hotgas lines on commercial refrigerating systems and on civil and industrial air-conditioning systems.

Construction

The main parts of the valves are made with the following
materials :

	extruded brass as per BS-218
	stainless steel for the spring
	neoprene rubber for outer seal
	PTFE for seat

Installation

The valves can be installed in any section of a refrigerating system, where it is necessary to avoid an inversion of the refrigerating flow.

Before connecting the valve to the pipe it is to make sure that the refrigerating system is clean. Infact the valves with PTFE seats are particularly sensitive to dirt and debris. Furthermore check that the flow direction in the pipe corresponds to the arrow stamped on the body of the valve.

		Operating Temp		Operating Pressure
Model	Size Flare	°C Min	°C Max	PSI (Max)
NRV - 6	1/4"	-35	90	400
NRV - 10	3/8"
NRV - 12	1/2"
NRV - 15	5/8"

Model	DIMENSIONS (MM)		Weight
Model	H	D	gm
NRV-6	58.5	25.4	90
NRV-10	61	25.4	100
NRV-12	72	29	150
NRV-15	83	36.5	230

17-02-2011

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