Air Compressor Parts
1/2" Electronic Lockshield Valve | Air Compressor Drain | 220V
CMP-03775PLUM-00143
£42.99
Air Compressor Parts
6 products available
Compel supplies industrial air compressor parts to keep workshop airlines, receiver tanks, and production machinery operating at full pressure. Plant mechanics, maintenance supervisors, and repair shops rely on our stock of air compressor spares to resolve line leaks, replace failed unloader components, and service worn pumps. Our catalog supports standard reciprocating units, high-pressure setups, and oil-free air compressors with factory-fit parts.
Whether you need an air compressor check valve for an unloader assembly, an automatic compressor drain valve to purge receiver condensate, or a compressor safety valve to safeguard pressurized tanks, we provide direct access to industrial-grade components. Every product carries explicit thread dimensions, port counts, and pressure limits to keep your air system running without unexpected maintenance halts.
6 products in Air Compressor Parts
Air Compressor Parts
Lockshield Drain Off Valve | Timed Electronic | 1/2 Air Tank
CMP-03224PLUM-00095
£58.99
Air Compressor Parts
Check Valve | Air Compressor Safety Release | 1/4 NPT Pressure Valve
CMP-02260PIPE-00009
£200.99
Air Compressor Parts
Brass Air Compressor Safety Valve | 1/4 NPT | 200 PSI Pressure Relief & Check Valve
TBS-02561HYDR-00201
£7.99
Air Compressor Parts
Automatic Drain Valve | Pneumatic Tank & Compressor Moisture Separator
TBS-02582HYDR-00219
£52.99
Air Compressor Parts
3-Port Air Compressor Check Valve Kit | 400mm Exhaust Tube | 20/16/10mm Thread Fittings
TBS-02478HYDR-00121
£11.99
Sizing and Port Configuration for an Air Compressor Check Valve
Check valves stop backpressure in the tank from forcing air back into the pump head once the motor stops. A 3-port check valve routes discharge air into the receiver while connecting an auxiliary tube to the pressure switch unloader. Mismatched threads will crack brass ports or cause continuous line leaks.
Check your replacement against the primary pump inlet and unloader port sizes before mounting. Many standard reciprocating pumps use a 20 x 16 x 10 mm male thread format, while smaller intake setups accept M14 connections. For quiet running or oil-free units, verify whether the system calls for an exhaust solenoid check valve assembly to bleed head pressure during shutdown.
- Brass and rubber cut-off valves provide dependable non-return sealing against tank backpressure.
- Zinc alloy 3-port valve kits often include a 400 mm pipe for direct unloader hookup.
- Heavy-duty cast iron and copper units from LEENKEA withstand high mechanical pump vibration.
Safety Relief Limits and Overpressure Protection
Every receiver vessel requires an independent mechanical compressor safety valve to prevent catastrophic over-pressurization if an unloader or pressure switch fails. Safety valves must release volume faster than the pump can deliver it.
Our brass safety relief valves feature standard 1/4 in NPT male fittings that thread into standard tank bungs. Verify that the valve pressure rating matches your system envelope. Valves rated for 125-200 psi (8.6-13.8 bar) fit systems running typical 150-175 PSI tank pressures, ensuring positive opening before vessel limits are exceeded.
Purging Condensate and Regulating Intake Air
Moisture build-up inside air tanks causes interior corrosion and carries liquid water directly into downstream air tools. Installing an automatic electronic compressor drain valve on G 1/2" (DN15) tank ports removes manual petcock maintenance. These timed electronic units handle both compressed air and liquid condensate across compressor tanks and cooler drains.
Upstream filtration and pressure tuning protect internal valve discs and seals. Filter regulator models across the AR2000, AR3000, AR4000, and AR5000 series accommodate line connections from G 1/4 to G 1. They operate across temperatures from -5 - 60 °C, withstand proof pressure up to 1.5 MPa, and provide an adjustable regulating pressure range of 0.05 - 0.85 MPa.
Buying guide
Choosing Air Compressor Parts
- What dimensions are required when replacing an intake hose on an oil-free air compressor?
- Intake hoses on oil-free units connect the pump head directly to the check valve. You must match the connector length, commonly 400 mm, along with the correct fitting diameter. Our stock covers pump fitting diameters of 14 mm, 16 mm, and 19 mm, constructed from flexible stainless steel to resist cyclic heat and vibration.
- How do I confirm the pressure rating on a 1/4 in NPT safety relief valve?
- Check the stamping on the brass valve body against your tank design pressure plate. CHEERBRIGHT brass safety valves feature a 1/4 in NPT male thread and a factory pressure rating between 125-200 psi (8.6-13.8 bar), which suits standard 150-175 PSI receiver vessels. Never set or install a safety valve with an actuation pressure higher than the working limit of the tank.
- Which material is best for an air compressor check valve body?
- Solid brass check valves with internal rubber seals offer reliable corrosion resistance against tank moisture and deliver reliable shut-off under continuous thermal cycling. Zinc alloy bodies serve lighter-duty intermittent compressors, often paired with 400 mm copper or aluminum tubes. For high-vibration, continuous-run workshop pumps, cast iron and copper check valves provide added mechanical thread strength.
- What are the pressure and temperature limits for AR series intake filter regulators?
- The AR2000, AR3000, AR4000, and AR5000 pneumatic filter regulators operate within a temperature range of -5 - 60 °C. They deliver a regulated pressure output between 0.05 - 0.85 MPa and feature a proof pressure rating of 1.5 MPa. Port sizes span from G 1/4 to G 1 to match pipe diameters on industrial air distribution headers.
- When should an automatic electronic drain valve be installed instead of a manual valve?
- Automatic electronic drain valves are recommended whenever compressors operate continuously or in locations where manual draining is easily overlooked. Threading directly into G 1/2" (DN15) receiver ports or aftercooler drains, these valves purge oil-water condensate on timed cycles. They prevent tank scale accumulation and stop water from migrating into sensitive pneumatic valves.