Minimum Pressure Valve MPV-20JF-Y for Oil-Flooded Screw Compressors

MPV-20JF-Y technical specifications

Compatibility

The MPV-20JF-Y is a universal part rather than one built for a single brand: it fits a wide range of oil-flooded screw compressors of Chinese and Asian manufacture, including Dali, Crossair, Bmech, and others, with a capacity of 0.8–3.0 m³/min and drive power of 5–15 kW. Before ordering, check the opening pressure and connection dimensions against your old valve or the compressor’s manual — send us a photo and we’ll help confirm compatibility.

Advantages and unique selling points (USP)

1. Universal fit. A single valve covers several common brands of Chinese- and Asian-made screw compressors — no need to hunt for a part specific to one make.
2. Two parts in one. The minimum pressure valve is combined with a check valve, simplifying the oil tank design and reducing the number of potential failure points.
3. Precise factory setting. The 3.5–4.5 bar opening pressure ensures stable oil circulation to the screw element right after start-up, avoiding “oil starvation” of the bearings.
4. Pressure safety margin. A maximum working pressure of up to 16 bar means the valve body stays intact even during brief spikes well above its set point.
5. Fits a wide power range. Works with compressors from 5 to 15 kW (0.8–3.0 m³/min) — covering most small and medium-capacity stations.

Applications

• Light industry — running automatic sewing and textile lines.
• Auto service stations — powering pneumatic impact wrenches, lifts, and tire-changing equipment.
• Furniture manufacturing — running pneumatic staplers and workpiece clamping systems.
• Spray painting — stable air supply for spray guns in paint booths.
• Small manufacturing and warehouse compressor stations based on 5–15 kW screw compressors.

Expert opinion

Vitalii Boluchevski, lead engineer at Acvatron SRL (18 years of experience): “The MPV-20JF-Y is a convenient choice precisely because it’s a universal part: the market has many Asian-assembled screw compressors sold under different nameplates, but inside they often share the same standard minimum pressure valve. Combining the check valve function into a single body reduces the risk of a leak at the joint between two separate parts. If a compressor is slow to reach working pressure, or you notice excess oil carryover into the line right after start-up, this valve is the first thing to check.”

Does your compressor take a long time to reach working pressure, or “spit” oil right after start-up? Often the cause is a minimum pressure valve that’s no longer holding its set point. The MPV-20JF-Y maintains oil tank pressure at 3.5–4.5 bar, ensuring stable oil circulation to the screw element from the first seconds of operation, while its built-in check valve function protects the system from compressed air backflow when it stops.

It’s a universal part: it fits a wide range of oil-flooded screw compressors of Chinese and Asian manufacture — Dali, Crossair, Bmech, and others — rated at 5–15 kW, so there’s no need to hunt for a rare match to a specific brand.

Acvatron SRL supplies MPV-20JF-Y valves directly from the manufacturer — order the part today to keep your compressor starting up reliably, without oil loss.

FAQ

1. Can a faulty MPV-20JF-Y damage the compressor? Yes. If the valve doesn’t maintain minimum pressure, oil won’t reach the screw element effectively at start-up, leading to overheating and increased wear of the screw pair.

2. Will this valve fit my compressor if the brand isn’t on the list? The valve is universal for oil-flooded screw compressors with a capacity of 0.8–3.0 m³/min (5–15 kW) — the brand list (Dali, Crossair, Bmech, etc.) isn’t exhaustive. Send us a photo of your old valve or the compressor’s manual, and we’ll check the opening pressure and connection dimensions.

3. Is this valve suitable for oil-free compressors? No, the MPV series is designed specifically for oil-injected screw compressors, where pressure needs to be maintained for oil circulation.

4. How do I know when the valve needs to be replaced? The main signs are: the compressor taking a long time to reach working pressure after start-up, excess oil carryover into the air line right after start-up, or unstable operation not caused by the pressure switch itself.

5. Does the combined check valve need separate servicing? No, the check valve function is integrated into the MPV-20JF-Y’s shared body and is replaced together with the minimum pressure valve as a single unit.