Pressure controlled water valves

Detailed Product Description

PWV series pressure controlled water valves are usually installed on the inlet of condenser, which can regulate the flow of cooling water according to the change of condensing pressure.
When condensing pressure of compressor rises, valve is turned up automatically, so more cooling water enters the condenser to accelerate the condensing of refrigerant. Reversely, when condensing pressure of compressor drops, valve is turned down automatically, so cooling water reduces and the condensing pressure is kept within certain range.
Adjust screw rod at clockwise rotation, the control pressure of valve increases; inversely, the control pressure decreases.

Type and data

Symbol	Model	Condenser side				Liquid side			Factory setting opening pressure (MPa)	Kv value m3/h
		Refrigerant	Adjusting range (MPa)	Max. working pressure (MPa)	Max. testing pressure (MPa)	Medium	Max. working pressure (MPa)	Max. Medium temp. (.C)
Low pressure	PWV3/8	R134a, R22,R407C R404A/507	0.5→1.8	2	2.4	Fresh water	1	60	0.75	0.8
	PWV1/2									2.5
	PWV3/4									3.2
	PWV1									5.0
High pressure	PWV3/8G		0.7→2.3	2.6	3				2	0.8
	PWV1/2G									2.5
	PWV3/4G									3.2
	PWV1G									5.0
Kv value is the flow of water in m3/h at a pressure drop across valve of 0.1 MPa,ρ= 1000 kg/m3.

Connection

Model	Condenser side	Liquid side
PWV3/8 PWV3/8G	1/4 flare 7/16"-20UNF nut	3/8" flare
PWV1/2 PWV1/2G	1/4 flare 7/16"-20UNF nut	G1/2
PWV3/4 PWV3/4G	1/4 flare 7/16"-20UNF nut	G3/4
PWV1 PWV1G	1/4 flare 7/16"-20UNF nut	G1