Blacoh Sentinel Pressure Relief Valves

Blacoh Sentinel Pressure and Back Pressure Relief Valves are instruments for preventing siphoning and stabilising dosage rates.

Diaphragm back pressure valves are designed to enhance the performance of pumping systems by applying continuous back pressure to the system pump, while also acting as an anti-syphon valve. On the other hand, Diaphragm Pressure Relief Valves are designed to protect pumping systems from damage caused by excessive pressure, which is often the result of defective equipment or blockage in the pump line.

Features & Benefits

Know more about the features & benefits of using Blacoh's Sentinel Pressure Relief Valves.

Robust construction, high reliability, low cost
Compact Size for OEM Applications
Adjustable spring pressure from 0.34 - 24.13 bar
3 Port, 2 Port & 90° Configuration
Vulcanized PTFE/EPDM Diaphragm
Wide Range of Materials for different applications

Available Options

We customise pumps according to your specific application. Get in touch with us to know your options.

Optional 24.13 bar Rated Valve
Hybrid valve option
Full range of chemically resistant wetted materials

Key Specifications

Here are the key specifications of Blacoh's Sentinel Pressure Relief Valves.

Temperature up to 60°C (Plastic) or 149°C (Metal)
Capacity up to 7570.82 li (Back pressure relief) or 16277.27 USgal (Pressure relief)

Applications

Here is a list of industrial applications for which Blacoh's Sentinel Pressure Relief Valves are commonly utilized.

Municipal

Water And Wastewater Treatment
Water Supply

Industrial

Food & Beverages
Dairy
Oil, Fat, Sauce And Mayonnaise
Brewing And Beverages
Bakery And Confectionery
Pharmaceutical
Chemical
Transportation

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Principle of Operation

Diaphragm Back Pressure Valves continuously apply positive discharge pressure to the pump system to prevent siphoning. Meanwhile, Diaphragm Pressure Relief Valves start operation when the pressure in the pumping system exceeds the preset pressure of the valve.

Both diaphragms are held against the valve seat by an internal spring. Their operation is triggered when the preset pressure is exceeded. For Back Pressure Valves, the diaphragm is forced up and system fluid flows through the valve to the injection point. Meanwhile, for Pressure Relief Valves, the diaphragm is forced up and system fluid flows out of the relief port, going back to the tank or the pump suction side.