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Water Management

 

Mack Valves range of AUTOMATIC CONTROL VALVES are renowned for their superior design, offering efficient, trouble free and reliable operation.

With our 70 year history of valve manufacture and our strict quality control standards, our tried and tested designs ensure reliability  in critical environments. Beyond our standard valves, our technical department can design bespoke solutions to your exact requirements.

Controlling the rate at which pressure is applied and released to the top chamber, allows the valve to modulate control at any position between fully open and fully closed.  Different pilot systems change the way in which the control of the diaphragm chamber is achieved.

Products can be supplied in all sizes and materials to suit various applications and pressures, including cast & ductile iron, stainless steel, bronze, nickel / aluminium / bronze, and more.  Specialised application pilot systems are also available.

Choose a Model

Pressure Reducing

Keep downstream pressure constant using a pilot control valve that senses the downstream pressure and activates the ACV to allow flow to occur when downstream pressure is lower than the spring pressure setting on the pilot valve.

Pressure Reducing & Check

Prevent back-flow should the downstream pressure exceed the upstream pressure.  The valve closes slowly to prevent water hammer and protect the system from damage.

Pressure Sustaining & Check

Maintain constant upstream pressure to close system tolerances by relieving excess pressure downstream.  The valve closes and positively prevents return flow, over-pumping and pump cavitation due to excessive downstream demands.

Pressure Sustaining & Pressure Relief

Eliminate problems with sustaining back-pressure, pressure relief and uploading functions in bypass systems; rapid opening to maintain steady line pressure, while slow closing to prevent surges, and easily set to maximum flow rate.

Rate of Flow

Maintain maximum allowable flow rate, preventing lowering of supply pressure and limiting primary water supply to a pre-set flow.  Actuated by differential pressure.

Altitude

Control high water level in reservoirs.  The valve is non-throttling, and allows the reservoir to fill and close when it reaches its set top water level.  Can add special features such as back pressure sustaining, rate of flow, solenoid shut-off, pressure reducing, closing/opening speed control, position indicator, and delayed opening.

Swing Check Valves

Eliminate problems with sustaining back-pressure, pressure relief and uploading functions in bypass systems; rapid opening to maintain steady line pressure, while slow closing to prevent surges, and easily set to maximum flow rate.

Water Management

 

Mack Valves range of AUTOMATIC CONTROL VALVES are renowned for their superior design, offering efficient, trouble free and reliable operation.

With our 70 year history of valve manufacture and our strict quality control standards, our tried and tested designs ensure reliability  in critical environments. Beyond our standard valves, our technical department can design bespoke solutions to your exact requirements.

Controlling the rate at which pressure is applied and released to the top chamber, allows the valve to modulate control at any position between fully open and fully closed.  Different pilot systems change the way in which the control of the diaphragm chamber is achieved.

Products can be supplied in all sizes and materials to suit various applications and pressures, including cast & ductile iron, stainless steel, bronze, nickel / aluminium / bronze, and more.  Specialised application pilot systems are also available.

Choose a Model

See our selection in more detail:

Pressure Reducing

Keep downstream pressure constant using a pilot control valve that senses the downstream pressure and activates the ACV to allow flow to occur when downstream pressure is lower than the spring pressure setting on the pilot valve.

Pressure Reducing & Check

Prevent back-flow should the downstream pressure exceed the upstream pressure.  The valve closes slowly to prevent water hammer and protect the system from damage.

Pressure Sustaining & Check

Maintain constant upstream pressure to close system tolerances by relieving excess pressure downstream.  The valve closes and positively prevents return flow, over-pumping and pump cavitation due to excessive downstream demands.

Pressure Sustaining & Pressure Relief

Eliminate problems with sustaining back-pressure, pressure relief and uploading functions in bypass systems; rapid opening to maintain steady line pressure, while slow closing to prevent surges, and easily set to maximum flow rate.

Rate of Flow

Maintain maximum allowable flow rate, preventing lowering of supply pressure and limiting primary water supply to a pre-set flow.  Actuated by differential pressure.

Swing Check Valves

Eliminate problems with sustaining back-pressure, pressure relief and uploading functions in bypass systems; rapid opening to maintain steady line pressure, while slow closing to prevent surges, and easily set to maximum flow rate.

Altitude

Control high water level in reservoirs.  The valve is non-throttling, and allows the reservoir to fill and close when it reaches its set top water level.  Can add special features such as back pressure sustaining, rate of flow, solenoid shut-off, pressure reducing, closing/opening speed control, position indicator, and delayed opening.

Y-Strainers

Maintain maximum allowable flow rate, preventing lowering of supply pressure and limiting primary water supply to a pre-set flow.  Actuated by differential pressure.

3x4 Way Diverters

Control high water level in reservoirs.  The valve is non-throttling, and allows the reservoir to fill and close when it reaches its set top water level.  Can add special features such as back pressure sustaining, rate of flow, solenoid shut-off, pressure reducing, closing/opening speed control, position indicator, and delayed opening.