F6G25 BRONZE FIXED ORIFICE DOUBLE REGULATING VALVE

PN25     Fig No.: F6G25

FEATURES & SPECIFICATIONS
Single unit Y-pattern globe valve incorporating fixed orifice plate flow measurement unit.
Fitted with a pair of measuring plugs.
High measurement accuracy of +/-5% across all opening settings.
Microset handwheel and presetting scale is readable from all directions.
Regulating and isolating functions.
Threaded to EN 10226-1 (ISO 7).
Comply with BS 7350.
Applicable for hydronic balancing of heating and cooling systems.
Working pressure : 25bar.
Shell test pressure (x1.5) : 37.5bar.
Seat test pressure (x1.1) : 27.5bar.
Working temperature : -10°C … 120°C.
Suitable Media : Water.

Materials

Name Material
Body Bronze
Bonnet DZR Brass (DN15 .. DN32)
Bronze (DN40 … DN50)
Stem DZR Brass
Balancing Cone DZR Brass
Disc DZR Brass (DN15 … DN20)
DZR Brass + PTFE (DN25 … DN50)
Disc Retaining Ring DZR Brass
Orifice Insert DZR Brass
Measuring Plug DZR Brass
O-ring EPDM
Handwheel DZR Brass

Dimensions (mm)

DN (mm)
(inch)
15
½
20
¾
25
1
32
40
50
2
L 87 96 100 114 125 146
H 113 114 135 136 151 152
Kvs (Fully Open) 2.2 4.6 8.5 16.7 26.1 43.2
Handwheel Turns 4 4 4 4 4 4

Installation Guide

Install the Double Regulating Valve in the pipe line by ensuring the arrow marking on the valve is same direction as piping flow.

To achieve flow measurement accuracy, it is essential that the piping on the inlet and outlet of the valve is straight and has a minimum length equivalent to 5 times Diameter inlet and 2 times Diameters outlet as shown. If the valve is install at the discharge of a pump set, it is essential that the straight pipe length between pump outlet and valve has a minimum length of 10 times Diameters.

Design flow is achieved by pre-setting valve’s opening position, which could be read from scales at the handwheel. Contact your local distributor for information on electronic commissioning meter.

To lock the pre-setting of the valve, remove the cap at the top of the handwheel. Tighten the screw using a hexagon wrench and reassemble the cap.

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