MH737 Commissioning Set
Verified by manufacturer 15 days ago
DN250
DN250
Ductile iron variable orifice double regulating valve.
Application
- Primarily used in injection or other circuits requiring a double regulating valve for system balancing.
- Suitable for flow regulation and isolation.
- Supplied with Fig. 631 test points to enable flow measurement.
Description
Ductile iron variable orifice double regulating valve, with ANSI version option MHA737.
Features and benefits:
- The double regulating feature allows the valve to be used for isolation and to be re-opened to its pre-set position to maintain required flow rate.
- Y-Pattern globe valve suitable for flow regulation and isolation.
- Accuracy of flow measurement is ±10% at the full
- open position of the valve.
- Some reduction in accuracy occurs at partial openings of the valve in accordance with BS 7350.
- Supplied with Fig. 631 test points to enable flow measurement.
- Valve operation by means of a hand wheel.
General information
Color | Blue Guidance for specification option:
Silver Guidance for specification option: Stem. Red Guidance for specification option: Upstream test point marker. |
Material | Bronze Guidance for specification option: Disc bush and seat ring. Rubber Guidance for specification option: EPDM coating on cast iron disks. Brass Guidance for specification option: Gland (65 to 150 mm). Stainless steel Guidance for specification option: Stem. Steel |
Uniclass | |
CAWS | S90/650 Flow reducing/ servicing valves S92/435 Sprinkler valve sets S90/650 Flow-reducing/ servicing valves S14/490 Water metering valves S92/435 Control valve sets |
Specification data - Double regulating valves
Standard | To BS 7350. |
Arrangement | Globe (Y-pattern). |
Material | Body and bonnet: Ductile iron, Disc: EPDM coated cast iron, Disc bush and seat ring: Bronze, Stem: Stainless steel grade 410 – 1.4006, Packing and bonnet gasket: Non-asbestos, Gland (65 to 150 mm): Brass CW614N, Gland (200 to 300 mm): Cast iron.Manufacturer guidance
|
Connections | Flanged to BS EN 1092-2.Guidance for specification option:
|
PressureRange | Temperature: -10 to +120°C: 16 bar. Guidance for specification option:
|
Inlets/outlets diameter | DN250. Manufacturer guidanceNominal. |
Dimensions | 730 x 575 mm. Manufacturer guidanceNominal A x B. |
Weight | 192.0 kg. |
Flow capacity | 1211 Kv. Manufacturer guidanceFlow coefficient Kv for valves in fully open position. |
PressureLossCoefficient | 4.6. Manufacturer guidanceHeadloss coefficient (K). |
Integral accessories | Fig. 631 test points. Guidance for specification option: Red and blue supplied and fitted. |
Sustainability data
Material | Bronze Guidance for specification option: Disc bush and seat ring. Rubber Guidance for specification option: EPDM coating on cast iron disks. Brass Guidance for specification option: Gland (65 to 150 mm). Stainless steel Guidance for specification option: Stem. Steel |
Recyclability | Recycle locally |
Expected Life | 20 year |