These management systems are used for the supply and treatment of water and wastewater covering a range of applications from high-rise buildings, and whole municipalities, to comprehensive water systems for industrial facilities, hydroelectric power stations, and private sector projects.
400 SERIES-HYDRAULIC CONTROL VALVES
The patented and design-registered 400 Series Valves represent the leading edge of control valve technology. This diaphragm-actuated family of valves blends simple, dependable construction with superior performance for a variety of water control applications in irrigation and waterworks systems.
The diaphragm performs equally well under all service conditions, maintains perfect balance without distortion from uneven hydraulic forces, and is totally immune to pressure surges.
- Sizes: 3/4``-12`` in globe or angle patterns
- Pressure ranges: 0.5-16 bar - ISO: PN 16i (7-225 psi ANSI: Class 125)
- Working temperature: up to 80°C (176°F) - water
- End connections: Steel: Female-thread (NPT or BSP) and grooved for 1-1/2`` - 4``, or flanged for 1-1/2`` - 8`` in all known standards
- Bronze: Female-thread (NPT or BSP) for 3/4``, 1``, & 1-1/2``
700 SERIES HYDRAULICALLY OPERATED VALVES
Pressure Reducing Valves
Pressure Reducing Valves are hydraulically-operated, diaphragm-actuated, control valves that reduce higher upstream pressure to lower constant downstream pressure regardless of fluctuating demand or varying upstream pressure.
Range of pressure reducing valves includes:
Model 720 Pressure-Reducing Valve with features such as flow and leakage reduction, cavitation damage protection, throttling noise reduction and more.
The Model 720-20 Pressure-Reducing Valve with features such as return-flow prevention, cavitation damage protection, burst protection and check features prevent reverse flow through the valve.
The Model 720-55 Pressure-Reducing Valve with Solenoid Control. The valve opens and shuts-off in response to an electric signal.
The Model 720-PD Proportional Pressure-Reducing Valve is a hydraulically-operated, diaphragm-actuated, control valve that reduces higher upstream pressure to lower downstream pressure at a fixed ratio.
Pressure Sustaining Valves
Model 730 Pressure-Relief/Sustaining Valve
The Model 730 Pressure-Relief/Sustaining Valve is a hydraulically-operated, diaphragm-actuated, control valve that can fulfil either of two separate functions.
When installed in-line, it sustains minimum pre-set, upstream (back-) pressure regardless of fluctuating flow or varying downstream pressure. When installed as a circulation valve, it relieves excessive line-pressure when above maximum pre-set.
Model 723 Pressure-Sustaining and Reducing Valve
The Model 723 Pressure-Sustaining and -Reducing Valve is a hydraulically-operated, diaphragm-actuated, control valve with two independent functions. It sustains minimum pre-set upstream pressure regardless of fluctuating flow or varying downstream pressure and it prevents downstream pressure from rising above maximum pre-set regardless of fluctuating flow or excessive upstream pressure.
Model 730-55 Pressure-Relief/Sustaining Valve with Solenoid Control
The Model 730-55 Pressure-Relief/Sustaining Valve with Solenoid Control is a hydraulically-operated, diaphragm-actuated, control valve that sustains minimum pre-set, upstream (back-) pressure regardless of fluctuating flow or varying downstream pressure. It also either opens or closes in response to an electric signal. When installed as a circulation valve, the Model 730-55 relieves excessive line pressure when above maximum pre-set.
Model 736 Differential-Pressure Sustaining Valve
The Model 736 Differential-Pressure Sustaining Valve is a hydraulically-operated, diaphragm-actuated, control valve that sustains minimum pre-set, differential pressure between two points regardless of fluctuating flow or varying upstream pressure.
Model 73Q Quick Pressure-Relief Valve
The Model 73Q Quick Pressure-Relief Valve is hydraulically-operated, diaphragm-actuated, control valve that relieves excessive system pressure when this pressure rises above the pre-set value. It immediately, accurately, and with high repeatability responds to system pressure rise by fully opening. The Model 73Q provides smooth drip-tight closing.
Flow Control Valves
Model 770-U Flow Control Valve
The Model 770-U Flow Control Valve is a hydraulically operated, diaphragm-actuated, control valve that maintains pre-set maximum flow, regardless of fluctuating demand or varying system pressure.
Model 770-55-U Flow Control Valve with Solenoid Control
The Model 770-55-U Flow Control Valve with Solenoid Control is a hydraulically-operated, diaphragm-actuated, control valve that maintains preset maximum flow, regardless of fluctuating demand or varying system pressure. The valve opens and shuts-off in response to an electric signal.
Pump Control Valves
Model 740 Booster-Pump Control Valve
The Model 740 Booster-Pump Control Valve is a hydraulically-operated, diaphragm-actuated, active check valve that opens fully or shuts off in response to electric signals. It isolates the pump from the system during pump starting and stopping, to prevent pipeline surges.
Model 743 Booster-Pump Control and Pressure-Sustaining Valve
The Model 743 Booster-Pump Control & Pressure-Sustaining Valve is a hydraulically-operated, diaphragm actuated, active check valve that opens or shuts-off in response to electric signals. It isolates the pump from the system during pump starting and stopping, to prevent pipeline surges. While open, it sustains minimum discharge pressure regardless of fluctuating flow.
Model 748 Pump Circulation and Pressure-Sustaining Control Valve
The Model 748 Pump Circulation and Pressure-Sustaining Control Valve adds the advanced ``active check valve`` logic to standard pump systems. It is a hydraulically-operated, diaphragm-actuated, control valve that in response to electric signals (during the pump starting and stopping processes) opens, while sustaining discharge pressure, or shuts-off. By progressively circulating pump flow, it enables a standard mechanical check valve to respond gradually during the pump starting and stopping processes, preventing pipe-line surges.
