Fig. MH739 Commissioning Set - Fixed Orifice Double Regulating Valve
Verified by manufacturer 19 days ago
DN250
DN250
Ductile iron fixed integral 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 fixed integral orifice, double regulating valve with ANSI version option MHA739.
Features and benefits:
- Single unit Y-Pattern globe valves incorporating an integral orifice plate, to form a fixed orifice flow measurement unit with regulation and isolation capacity.
- The Double Regulating feature allows the valve to be used for isolation and to be reopened to its pre-set position, to maintain required flow rate.
- Accuracy of flow measurement is ±5% at all open positions of the valve, in accordance with BS 7350: 1990.
- Primarily used in injection or other circuits requiring a double regulating valve for system balancing.
- External spray epoxy coated for improved durability.
- 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. Yellow |
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 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, PN16 and Flanged to ANSI B16.1, Class 125.Guidance for specification option: MH739: Formerly to BS 4504. |
PressureRange | Temperature: -10 to +120°C: PN16. Guidance for specification option: Ratings align with BS EN 1092-2 PN16 (formerly BS 4504). |
Inlets/outlets diameter | DN250. Manufacturer guidanceNominal. |
Dimensions | 730 x 575 mm. Manufacturer guidanceNominal A x B. |
Weight | 194.0 kg. |
Flow capacity | 1052 (Kv), 1224 (Kvs). Guidance for specification option: Kv: Partially open valve. Manufacturer guidance
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PressureLossCoefficient | 6.0. Manufacturer guidanceHeadloss coefficient (K). |
Integral accessories | Fig. 631 test points. Manufacturer guidanceSupplied with red and blue test points to enable flow measurement. |
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 |