Check Valve
This is a simple valve that allows the flow of a fluid in a unidirectional manner. The valve has two major openings: one for fluid entry and the other for its passage. The valves come in a variety of sizes at varying costs. They are small, affordable and also simple. The operation of the check valve is simple and easy to understand. To provide different pressures, the valves have varying spring rates. They have a wide range of cracking pressures at which they open up. Some circuits require specific cracking pressures. In such a case, one must be keen to look out for the spring on the check valve symbol. A high flow rate causes a distance of the ball or the proppet and its seat. This induces a higher spring force.
Technical Specifications of Check / Non-return Valve :
- Size Range: 50NB – 600NB
- Range : ½” to 24”
- Trims: stellited, 316, 304, Monel, Ali bronze, duplex
- Pressure Rating : ANSI – 150#, 300#, 400#, 600#, 900#, 1500#, 2500#
- Standard: Generally conforming to BS1868 / API/BS/DIN STANDARD
- End Connections: Screwed Ends to BSP / BSPT/ NPT (F) Socket Weld Ends to ANSI B 16.11
- Type: Swing / Lift
- Gasket& Packing: Optional PTFE/ Graphite/ Asbestos/ Spiral wound/ Ring joint
- Disc: Solid
- Seat: Integral/ Renewable/ Seal welded
- Material: SS 316/ SS 316 L/SS 304/ CS or any special material
- Operation: Automatic
- Quality & Testing: Highest standard in Visual, Materials, Dimensional Accuracy, Operation, Leak-tightness
- Application Industries: Petrochemical, Power, Energy, Thermal, Refineries, Fertilizers