This valve protects pumps and pipes from pump startup and shutoff pressure surges due to power failure. Pump off means valve normally closed. If pump starting cause pressure surge, the pilot smoothly opens the valve to limit pressure rising.
The QTW150 manual gearbox has been designed with simplicity in mind, resulting in a robust design with manufacturing optimised to deliver reliability and consistent performance. The QTW150’s simple, rugged construction makes it an ideal choice for quarter-turn valve applications.
The valve reduces high upstream pressure to a pre-set lower and constant downstream pressure level, regardless of fluctuating flow or varying upstream pressure. A hydraulic regulating pilot drives the valve. The pilot is able to detect upstream pressure values and regulates closing steps of the valve until the pre-set pressure value is restored.
The valve controls downstream flow to a pre-set and constant value in order to limit water consumptions and preserve pipeline fill rate or to set a maximum demand value. The valve is controlled by a differential hydraulic pilot that senses the pressure fall generated by water flow into a calibrated orifice.
The valve opens fully or shuts off in response to electric signals. The valve is controlled by a solenoid that allows control liquid to flow in the upper chamber in order to close the main valve or, alternatively, drains upper chamber in order to open the main valve.
The Rotork Gears Series ‘AB-SS’ quarter-turn gear operators are rugged, industrial grade products manufactured with stainless steel housing components. All models in this series feature special sealing of the position indicator and high performance axial bearings. These gear operators are well suited for applications in chemical, ...
The 232 range of quarter-turn operators have a dye cast aluminium housing and are intended for applications in power waterworks and gas pipelines, HVAC, fire protection and most general industrial applications.
This valve controls water level in high level reservoirs to avoid overflow, without any external control system like float control etc. The valve remains completely open until the closing input is transmitted by the 3-ways piezometric altitude pilot.
Cla-Val 34 Series Air Release Valves are designed to vent entrained air that collects at high points in a pipeline. This valve continuously eliminates air from a system by releasing small quantities of air before large air pockets can occur. In many installations, continuing accumulations of air in the pipeline (lacking air release ...
The Cla-Val Model 129-01/629-01 Float Valve maintains a relatively constant level in storage tanks and reservoirs by admitting flow into the tank in direct proportion to the flow out of the tank. The rotary disc type float operated pilot control is installed at the high liquid level in the reservoir and is connected via tubing or pipe to the main ...
The Cla-Val Model 133-01/633-01 Metering Valve and Flow Rate Control Valve is a completely self contained valve and control system that accurately meters and/or controls flow rate when used on valves with pressure differentials of less than 100 psid.
MATERIAL OF BODY: spheroidal iron cast according to the norms PN-EN 545:2010. SHIPPING CONDITIONS: leak test according to the norms PN-EN 545:2010 POSSIBLE EMBODIMENT OF THE CORROSION RESISTANT COATING