Kaishan Air Compressor Minimum Pressure Valve

1.Compatible Models: Suitable for all 7.5KW-200KW Kaishan fixed-frequency and VFD screw compressors with accurate original matching.
2.Opening Pressure: Standard setting 0.4-0.45MPa, accurate pressure start-stop and sensitive response without stuck.
3.Main Material: High-strength cast iron valve body + brass valve core, high mechanical strength, impact and corrosion resistant.
4.Sealing Parts: High and low temperature resistant fluororubber sealing ring, tight sealing, anti-aging, no air leakage or pressure loss.
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Product Description:

1. Original Full-Series Adaptation & Fast Lossless Replacement
Produced in strict accordance with Kaishan original design parameters, the dual thread and flange interface specifications, mounting hole spacing and sealing dimensions fully match original equipment, 100% compatible with all 7.5KW-200KW screw models. No pipeline modification, drilling or pressure adjustment required. The old and failed valve can be quickly replaced directly, avoiding poor adaptation, air leakage and assembly dislocation of non-standard parts.
2. Accurate Pressure Control & Excellent Stabilization Effect
Each unit is pressure-calibrated before delivery to accurately lock the optimal opening pressure of 0.4-0.45MPa. It stably accumulates pressure during startup and quickly builds lubrication back pressure to ensure sufficient oil circulation and thorough head lubrication. It opens and exhausts stably after loading, buffers air impact and balances system pressure, completely solving unstable air output, fluctuating loading and excessive pressure relief during shutdown.
3. High-Strength Precision Material & Durable Structure
The integrally forged high-strength cast iron valve body features compact texture, uniform density, strong pressure and impact resistance without deformation or cracking. The precision machined brass valve core is wear and corrosion resistant with smooth opening and closing. The built-in high-strength rust-proof pre-tightened spring maintains lasting elasticity. The overall structure passes working condition reinforcement tests, resisting long-term high-temperature oil-gas erosion and high-frequency pressure impact for stable service in harsh industrial environments.
4. Fully Sealed Leak-Proof Design & Oil Loss Elimination
Equipped with imported fluororubber oil and high-temperature resistant sealing kits, it adapts to compressor oil-gas mixed working conditions with excellent anti-aging and anti-erosion performance. Zero gap contact after valve closing completely eliminates valve air leakage, interface pressure loss and gas channeling. Accurate pressure maintenance avoids low back pressure operation, fundamentally solving no-load oil leakage, excessive oil consumption and body oil accumulation, reducing daily maintenance costs.
5. Air Backflow Prevention & Core Filter Protection
The valve core closes quickly to lock pressure after shutdown, effectively blocking reverse backflow of compressed air from gas storage tanks and pipelines. It avoids damage and breakdown of oil-gas separation cores caused by high-speed backflow air, greatly reducing filter core damage and failure probability, extending filter service life, reducing replacement frequency and stabilizing oil-gas separation efficiency and compressed air cleanliness.
6. Strong Working Condition Adaptability & All-Weather Stable Operation
Specially reinforced for high temperature, pressure and corrosion resistance, it adapts to long-term 100℃+ high-temperature oil-gas working conditions and withstands high-frequency pressure cycle impact. It features sensitive opening-closing response without stuck or failure, suitable for complex working conditions such as 24-hour uninterrupted high-load operation, intermittent start-stop and frequent high-low pressure switching, ensuring long-term efficient and low-energy unit operation.

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