Pressure Reducing

Valve Group

Function

This one piece inlet control incorporates several different control devices in one. It is specifically designed for use on an

unvented system to control the incoming water supply to a hot water cylinder.

It includes: a pressure reducing valve, meaning the valve will hold at the pre-set pressure regardless of whether under

flow or no flow conditions and regardless of fluctuating inlet pressures. It also incorporates a single check valve which

will protect the system against backflow prevention up to fluid category 2, and a pre-set expansion relief valve which will

prevent overpressurisation. The expansion relief valve is designed so it can rotate, to allow the discharge connection to be

fitted in various directions making installation easier. Some models have a connection for a balanced cold water take off

which can allow the user to connect a cold water feed direct from the inlet control valve. Models available with a dedicated

connection for an expansion vessel.

Pressure Reducing Valve Group

Material of Main Parts

No. Part Name Materials

1 Compression Nut Brass

2 Body Brass

3 Olive Brass

4 Strainer SUS304

5 Valve Core POM

No. Part Name Materials

6 Diaphragm EPDM

7 Bonnet PPA

8 Spring 82B

9 Safety Relief Valve Brass

10 Check Valve POM

Overall & Dimension

Typical application

Model Description A B C D E

1PRN001 22mm 114 110 38 32 39

Pressure Reducing Valve Group

Specification

Max working pressure 16 Bar

Max working temperature 85o

C

Downstream pressure setting 3 bar

SRV scale 3bar or 4.5 bar or 5bar or 6bar or 8bar

Connection size 22 mm

Medium Water

IDC Ningbo Tel: 86-574-27670666 Fax: 86-574-27670600

Email: idcnb@idcgroup.com.cn

IDC Beijing Tel: 86-10-51659550 Fax: 86-10-84799807

Email: idcbj@idcgroup.com.cn