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Application

Suitable for installation where flow needs to be regulated.

Description

A double regulating valve.


Features and benefits:

  • The Double Regulating Valve offers an accuracy of ± 5% on all settings for precise flow regulation.
  • Y-Pattern globe valves with characterised throttling disc tending towards equal percentage performance.
  • Double regulating feature allows valve opening to be set with an Allen key.
  • Operation of the valve is by means of the Microset handwheel.
  • WRAS approved.
  • The D921 has sufficient authority to give effective regulation over the range of flows covered by matching flow measurement devices/valves.

General information

Shape

-

Manufacturer guidance

Oblique pattern globe valve

Color

Bronze

Material

Bronze

Guidance for specification option:

BS EN 1982 CC491K

Copper

Guidance for specification option:

DZR Copper Alloy BS EN 12165 CW602N

EPDM

Guidance for specification option:

Rubber

Plastic

Guidance for specification option:

Handwheel

Uniclass

Pr_65_54_95_26 Double regulating valvesPrimary

CAWS

S90/650 Flow reducing/ servicing valves

S90/650 Flow-reducing/ servicing valves

Specification data - Double regulating valves

Standard

To BS 7350: 1990; BS EN 10226-2 (ISO 7-1); BS EN ISO 228-1; BS EN 1982; BS EN 12165.

Arrangement

Globe.

Guidance for specification option:

Y-pattern.

Material

DRZ Copper alloy; Bronze; EPDM Rubber; Plastic.

Guidance for specification option:

Body: Bronze; Bonnet, Stem, Disc: DZR Copper alloy; O-Ring seal: EPDM rubber; Handwheel: Plastic.

Connections

Compression to BS EN 1254-2; Pressure-tight joints threaded to BS EN 10226-2; to BS EN ISO 228-1.

Inlets/outlets diameter

15 mm.

Dimensions

15 x 87 mm.

Weight

0.54 kg.

Approvals

Water Regulations Advisory Scheme (WRAS).

PressureRange

Temperature (Threaded):-10 to +100°C: 25 bar, Temperature (Threaded): +110°C: 23.4 bar, Temperature (Threaded): +120°C: 21.8 bar. Temperature (Compression): -10 to +30°C: 16 bar, Temperature (Compression): +65°C: 10 bar, Temperature (Compression): +120°C: 5 bar.

Flow capacity

105 Kv.

Manufacturer guidance

Flow coefficient Kv.

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