BALANCING VALVES
Balancing Valves - Static
Hattersley’s range of static balancing valves includes Double Regulating Valves and Fixed Orifice Double Regulating Valves. The integral fixed orifice design offers greater accuracy than variable orifice design valves, makes set-up easier and involves fewer connections resulting in lower installation costs. Available in medium and low flow versions, Hattersley’s static balancing valves offer positive flow control at all handwheel settings.
ONE VALVE SYSTEM (MEASUREMENT AND REGULATION AT ONE POINT)
Commissioning Set Components
VARIABLE ORIFICE DOUBLE REGULATING VALVES
Fig. 631
Standard Pressure Test Points (max 120°C)
BS 7350
When fitted to measuring devices and strainers, test points are supplied with cap retainers in red and blue for upstream and downstream port identification. This meets the requirements of BS 7350.
Test Probes
The application of a silicone lubricant to the probe shaft prior to insertion is recommended. Hattersley Figure 631 test points are WRAS Approved products and are listed in the water fittings and materials directory.
Fig. 1000
DZR Brass Metering Stations
FEATURES & BENEFITS
• Precise and accurate measurement, conforming to BS 7350:1990
• Dezincification resistant material preventing corrosion cracking and fungal growth
• Flow Measurement Device is suitable for systems where pipes have been sized on the basis that pipe frictional losses lie in the range 100 to 400 Pa/m
• WRAS Approved for use with potable water up to 85°C
• Supplied with red and blue test points for upstream and downstream port identification
• Flow measurement accuracy of ±5%
DIMENSIONAL DRAWING
Fig. 1000L & 1000M
DZR Brass Low & Medium Flow Metering Stations
FEATURES & BENEFITS
• Precise and accurate measurement, conforming to BS 7350:1990
• Dezincification resistant material preventing corrosion cracking and fungal growth
• WRAS Approved for use with potable water up to 85°C
• Supplied with red and blue test points for upstream and downstream port identification
• Flow measurement accuracy of ±5%
DIMENSIONAL DRAWING
Fig. 1432, 1432L, 1432C, 1432LC
Bronze Double Regulating Valve
FEATURES & BENEFITS
• Provides precise and accurate flow regulation
• Easy to operate with handwheel and numerical indicator
• Robust bronze body for long service life
• WRAS Approved for use with potable water to 85°C.
• Positive flow control at all handwheel settings
DIMENSIONAL DRAWING
Fig. 1732, 1732M, 1732L, 1732C, 1732MC, 1732LC
Bronze Fixed Orifice Double Regulating Valve (FODRV)
FEATURES & BENEFITS
• Provides precise and accurate flow regulation
• Easy to operate with handwheel and numerical indicator
• Integral orifice and test points – no need for separate DRV and metering station
• WRAS Approved for use with potable water to 85°C.
• Positive flow control at all handwheel settings
• The FODRV offers an accuracy of ± 5% on all settings, for precise flow regulation and measurement
DIMENSIONAL DRAWING
Fig. M2000
Stainless Steel Metering Stations
FEATURES & BENEFITS
• Compact, wafer design for fitting in tight spaces
• Accurate flow measurement
• Supplied with red and blue test points for upstream and downstream port identification
• Accuracy of flow measurement at normal velocities is ±5%
• WRAS Approved for drinking water applications in sizes DN65 to DN150
DIMENSIONAL DRAWING
Fig. M2000
Stainless Steel Metering Stations
FEATURES & BENEFITS
• Compact, wafer design for fitting in tight spaces
• Accurate flow measurement
• Supplied with red and blue test points for upstream and downstream port identification
• Accuracy of flow measurement at normal velocities is ±5%
DIMENSIONAL DRAWING
Fig. M3000
Stainless Steel Metering Stations
FEATURES & BENEFITS
• Compact, wafer design to fit between flanges
• Accurate flow measurement
• Supplied with red and blue test points for upstream and downstream port identification
• Accuracy of flow measurement at normal velocities is ±5%
DIMENSIONAL DRAWING
Fig. MH733 / MHA733
Double Regulating Valve (DRV)
FEATURES & 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
DIMENSIONAL DRAWING
MH737 / MHA737
Variable Orifice Double Regulating Valve (VODRV)
FEATURES & 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
DIMENSIONAL DRAWING
Fig.MH739 / MHA739
Fixed Integral Orifice Double Regulating Valve (FODRV)
FEATURES & 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
DIMENSIONAL DRAWING
Fig. 973 & 973G
Ductile Iron with Double Regulating Feature
FEATURES & BENEFITS
• Robust iron body materials for long service life
• Precise flow regulation
• Fully-lugged – easy to install and operate
• Positive flow control at all settings
DIMENSIONAL DRAWING
Fig. 4923 & Fig. 4923G
Butterfly Double Regulating Valves
FEATURES & BENEFITS
• Robust, Ductile Iron valve bodies for long service life
• Stainless Steel discs as standard
• Suitable for wide temperature range -10°C to 120°C
• Fully lugged for secure installation
• Rated to PN25
• Lever and Gearbox operator options
DIMENSIONAL DRAWING
