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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
