Daily troubleshooting method for FAIRCHILD pressure reducing valve in the United States

FAIRCHILD pressure reducing valveThe exclusion methods are as follows:
Fault phenomenon: Unstable pressure fluctuations
External structure diagram of ZJY46H combined pressure reducing valve
External structure diagram of ZJY46H combined pressure reducing valve (3 sheets)
fixed
Fault analysis:
1. Air is mixed into the oil. 2. The damping hole is sometimes blocked
3. The roundness of the slide valve and the inner hole of the valve body exceeds the specified limit, causing the valve to get stuck
4. The spring is deformed or stuck in the slide valve, making it difficult for the slide valve to move or the spring is too soft
5. The steel ball is not round, the steel ball does not fit well with the valve seat, or the cone valve is not installed correctly
Exclusion method:
1. Remove air from the oil
2. Clean the damping hole
3. Repair and research valve holes and slide valves
4. Replace the spring
5. Replace the steel ball or disassemble the cone valve for adjustment
Fault phenomenon: The secondary pressure does not rise high
Fault analysis:
1. External leakage
2. Poor contact between cone valve and valve seat
Exclusion method:
1. Replace the seals, tighten the screws, and ensure that the torque is evenly distributed
2. Repair or replace
Fault phenomenon: does not have a pressure reducing effect
Fault analysis:
1. The oil drain port is blocked; The drain pipe is connected to the return pipe and has a return oil pressure
2. The main valve core is stuck in the fully open position
Exclusion method:
1. The drain pipe must be separated from the return pipe and returned to the oil tank separately
2. Repair and replace parts. Check the oil quality
FAIRCHILD pressure reducing valve is a valve that adjusts the inlet pressure to a certain required outlet pressure, and relies on the energy of the medium itself to automatically maintain 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. It has two divisions: the Industrial Control Department and the Mechanical Power Conversion Department. Its technology and product quality are unparalleled in the world, 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 products that are more suitable for your needs. 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 leading 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, thanks to its high-quality product customer service, timely delivery, competitive prices, and timely response to customer needs.
The company mainly produces European and American brands. We have companies in Germany and the United States, and can purchase brands from any European country. For example, Germany's advantageous brands include: Germany's Baode BURKERT, Germany's DEMAG, Germany's HAWE Hawei, Germany's REXROTH Rexroth, Germany's HYDAC Hedec, Germany's PILZ relay, Germany's FESTO Festo, Germany's IFM Yifu door sensor, Germany's E+H Endershausen, Germany's Heidenhain HEIDENHAIN, Germany's P+F Beckhoff sensor, Germany's SICK, Germany's TURCK Turck, Germany's HIRSCHMANN industrial switch. Germany's Henschel, Germany's MURR, Germany's SCHMERSAL, Germany's SAMSON, Germany's EPRO under Emerson
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Norgren, UK
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