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Fig. 425 Pressure Reducing Valve

Verified by manufacturer 12 days ago

DN15

Hattersley Variant:

DZR brass pressure reducing valve, PN25.

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Application

Suitable for drinking water applications only (medium use), up to 80°C.


Description

DZR brass pressure reducing valve, PN25.


Features and benefits:

  • PRVs enable control of pressure from boosted hot and cold water supplies to match site requirements.
  • Includes male union tail-pieces for ease of installation, reducing time spent on site.
  • Features an integral strainer preventing debris from affecting valve performance.
  • Recommend that isolation valves are fitted upstream and downstream of the valve to enable isolation for cleaning of strainer.
  • Performance in accordance with BS EN 1567 for quality assurance.
  • Easy access for measuring the outlet pressure.
  • A pressure gauge is available to measure outlet pressure for each installed valve and should be ordered separately.
  • WRAS Approved to 80°C for drinking water applications.

General information

Color

Yellow

Guidance for specification option:

Body.

Green

Guidance for specification option:

Cap.

Material

Brass

EPDM

Plastic

Stainless steel

Polyamide

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Specification data - Pressure-regulating valves

Standard

To BS EN 1567.

Third-party certification

Water Regulations Advisory Scheme-approved and PED 2014/68/EU.

Form

Water pressure reducing.

Adjustment

Adjustable.

Operating conditions

-

Temperature (maximum)

80°C.

Maximum working pressure

25 bar.

Connections

Male union tapered tail-pieces to BS EN 10266-1.

Inlets/outlets diameter

DN15.

Manufacturer guidance

Nominal dimension: Equals thread size.

Dimensions

140 x 80 x 45 x 104 mm.

Manufacturer guidance

Nominal L1 x L2 x H1 x H2.

Weight

0.8 kg.

Mesh size

0.5 mm.

Flow capacity

0.35 L/s.

Manufacturer guidance

Maximum.

Material (all components)

Body and plug: DZR brass CW625N, Nuts: Brass CW617N, Dismantling fittings and other internal parts (in contact with water): DZR brass CW626N, Other components (not in contact with water): Brass CW614N, Filter screen: Stainless steel grade 304, Spring: Spring steel, Cartridge: Acetal, Bonnet (upper cap): Polyamide, Gaskets: Pressed fibre, Diaphragm, seat gaskets and O-rings: EPDM.

Manufacturer guidance

  • CW625N DZR brass and CW617N brass to BS EN 12165.
  • CW626N DZR brass and CW614N brass to BS EN 12164.
  • Polyamide to PA6 GF30.
  • Acetal to POM.
  • Stainless steel to AISI 304.
  • Pressed fibre: Asbestos free.
  • EPDM: Ethylene propylene diene monomer.

Integral accessories

Strainer.

DownstreamPressure

1–6 bar.

Manufacturer guidance

Preset outlet pressure: 3 bar.

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