Working principle of Fairchild pressure reducing valve

The working principle of Fairchild pressure reducing valve

FAIRCHILD Sensor FAIRCHILD Pressure Reducing Valve FAIRCHILD Control Valve FAIRCHILD Inverter FAIRCHILD Controller

The pressure of the Fairchild pressure reducing valve is P1 compressed air, which is input from the left end and throttled through valve port 10 to reduce the pressure to P2 output. The size of P2 can be adjusted by the pressure regulating springs 2 and 3. Rotate knob 1 clockwise, compress springs 2 and 3, and diaphragm 5 to move valve core 8 downwards, and increase the opening of valve port 10 to increase P2. If knob 1 is rotated counterclockwise, the opening of valve port 10 decreases, and P2 decreases accordingly.

If P1 of the Fairchild pressure reducing valve instantly rises, P2 will also rise, causing the pressure inside the diaphragm chamber 6 to increase. The thrust generated on the diaphragm 5 will correspondingly increase, which disrupts the balance of the original force and causes the diaphragm 5 to move upward. A small portion of the airflow is discharged through the overflow hole 12 and the exhaust hole 11. At the same time as the diaphragm moves upward, due to the action of the reset spring 9, the valve core 8 also moves upward, closing the intake valve port 10 and increasing the throttling effect, causing the output pressure to decrease until a new equilibrium is reached, and the output pressure basically returns to its original value. If the input pressure drops instantly, the output pressure also drops, the diaphragm 5 moves down, the valve core 8 moves down accordingly, the intake valve port 10 opens wider, the throttling effect decreases, and the output pressure basically returns to its original value. Rotate knob 1 counterclockwise. Loosen the regulating springs 2 and 3, and the thrust of the gas acting on the diaphragm 5 is greater than the force of the pressure regulating spring. The diaphragm bends upwards and the intake valve port 10 is closed by the action of the reset spring. Rotate knob 1 again, and the top of intake valve core 8 will disengage from overflow valve seat 4. The compressed air in diaphragm chamber 6 will be discharged through overflow hole 12 and exhaust hole 11, leaving the valve in a non output state.

Fairchild pressure reducing valve In short, the overflow pressure reducing valve relies on the throttling effect of the inlet to reduce pressure, and relies on the balance of force on the diaphragm to operate

Stabilize the pressure using the overflow effect of the overflow hole; Adjusting the spring can change the output pressure within a certain range. To prevent the overflow type pressure reducing valve from emitting a small amount of gas and polluting the surrounding environment, a pressure reducing valve without an overflow valve (i.e. a regular pressure reducing valve) can be used.

Fairchild pressure reducing valve is a valve that adjusts the inlet pressure to a desired outlet pressure, and relies on the energy of the medium itself to automatically maintain a stable outlet pressure. From the perspective of fluid mechanics, a pressure reducing valve is a throttling element with variable local resistance. By changing the throttling area, the flow velocity and kinetic energy of the fluid are altered, resulting in different pressure losses and achieving the purpose of pressure reduction. Then, relying on the adjustment of the control and regulation system, the fluctuation of the pressure behind the valve is balanced with the spring force, so that the pressure behind the valve remains constant within a certain error range.

Fairchild is an American company that produces precision instruments, with two divisions: Industrial Control and Mechanical Power Conversion. Its technology and product quality are world-renowned, and it has over 99 years of manufacturing experience. It has always provided high-precision, high-quality, and highly reliable products for the processing and machine tool industries. Its products mainly include: air pressure regulators, filter regulators, M/P converters, air volume boosters, gas relays, current pressure converters, voltage pressure converters, and pressure current converters. Fairchild has distributors within its scope to provide localized services. Our factory engineers can solve various difficult problems for you. Provide the product you need. Our reputation is built on high-quality products, excellent services, and quick response to customer needs Our energy transmitter can provide high-quality mechanical variable speed and differential transmission. This technology is the foundation of our development, and it puts the company in a position in the field of energy transmission. For 50 years, the industry has trusted our energy transmission equipment for its reliable performance in speed and position control. Our transmitters are widely used for combined tension control and precise speed adjustment in printing, papermaking, packaging, and textiles. In addition, our transmitters are also used in machine tools, conveyors, synchronizers, and other OEM applications. Every transmitter that leaves the factory has been optimized for its specific application. Fairchild has established a good reputation in the industry due to its high-quality products, excellent customer service, timely delivery, competitive prices, and timely response to customer needs.

The company mainly produces European and American brands, and can purchase brands from any European country. For example, Germany's advantageous brands include FESTO Festo, BURKERT Baode, BOSCH-REXROTH Bosch Rexroth, IFM Yifumen, TURCK Turck, P+F Beijiafu, BALLUFF Baruff, SICK Shik, HIRSCHMAN Hesman, MURR Murr, HYDAC Hedec, GSR, CROUZET Gaonos, E+H Engelshaus, PILZ Pilz, HAWE Hawei, SIEMENS Siemens, STAUFF Sidford, EUCHNER Ansneng, EMG servo valve, UNIVER, ATOS There are approximately 500 large and small brands from European countries such as Tos and NORGREN that have cooperative relationships with our company.