What accessories are there in Wilden pneumatic diaphragm pump

Wilden pneumatic diaphragm pumps have a wide variety of accessories, mainly divided into standard accessories and optional accessories, 

depending on the pump model and application needs. The following are common accessories categories and descriptions:

1. Core functional accessories

Diaphragm

Materials: Santoprene, PTFE, Buna-N (nitrile rubber), EPDM (ethylene propylene ternary rubber), etc.

Function: Transmit pneumatic power, isolate the medium and compressed air, and the material needs to be selected according to the corrosion 

properties and temperature of the medium (such as PTFE resistance to strong corrosion).

Replacement cycle: Consumable parts need to be inspected regularly (if cracks or deformation are found, they need to be replaced immediately).

Ball & Seat

Materials: stainless steel, ceramic, polypropylene (PP), PVDF, etc.

Function: Control the unidirectional flow of the medium, and the wear resistance and corrosion resistance must match the characteristics of the 

medium (such as ceramic foils are suitable for granular media).

Frequently Asked Questions: Particle wear or chemical corrosion may cause leakage and require regular cleaning or replacement.

Air Valve

Function: Control the flow direction of compressed air and drive the diaphragm to reciprocate.

Type: Standard air valve, high efficiency energy-saving valve (such as Pro-Flo® SHIFT series).

Silencer

Function: Reduce exhaust noise, suitable for indoor or noise-sensitive environments.

Material: Plastic or metal, some models can adjust the exhaust flow.

2. Sealing and connecting parts

Seals (O-rings, gaskets)

Material: Viton (fluoroelastomer), EPDM, PTFE, etc., which must be resistant to medium corrosion and temperature.

Common locations: pump body connection, inlet and outlet flange.

Import and export connectors (Connectors)

Type: flange, thread (NPT, BSP), clamp quick installation (sanitary grade application).

Material: consistent with the pump body (such as PVDF, stainless steel).

3. Air source treatment accessories

Filtration pressure reducing valve (FRL unit)

Function: Filter moisture and impurities in compressed air, adjust the intake pressure, and extend the pump life.

Suggestion: High-precision working conditions (such as food and pharmaceuticals) require configuration.

Lubricator

Function: Add a small amount of lubricating oil to the compressed air to reduce wear of the air valve (Note: Disabled in some oil-free working conditions).

4. Special working conditions accessories

Explosion-proof components (ATEX certified)

Applicable scenarios: Flammable and explosive environments (such as petroleum and chemical industry) must meet explosion-proof standards.

Heating Jacket

Function: Maintain the fluidity of high viscosity media (such as asphalt, resin).

Pressure gauge and regulating valve

Function: Real-time monitoring of air pressure, adjust pump flow and outlet pressure.

5. Maintenance tools

Disassembly Kit

It includes special wrench, diaphragm installation tools, etc., for quick maintenance.

Spare Parts Kit

It usually contains consumable parts such as diaphragms, ball valves, seals, etc., for emergency replacement.

6. Optional accessories

Pulse Damper

Function: Reduce the pulsation of the pumped medium and protect downstream equipment.

Dry operation protection device

Function: Check whether the pump is idle and shuts down automatically to prevent the diaphragm from overheating and damage.

Traffic Monitor

Used to monitor pumping efficiency in real time and warn of abnormal working conditions.

7. Accessories selection suggestions

Matching media characteristics: PTFE diaphragm + ceramic ball valve for corrosive media, Santoprene diaphragm + stainless steel joint for food grade applications.

Consider environmental requirements: special accessories are required for special working conditions such as explosion-proof, sanitary grade (3A certification), 

high temperature and other special working conditions.

Regular maintenance: It is recommended to check for consumable parts (diaphragms, ball valves, seals) every 3 to 6 months.

Example: Process for replacing accessories

Close the air source and release the line pressure.

Remove the pump cover and check the status of the diaphragm and ball valve.

Replace worn parts (such as diaphragms, ball seats).

Clean the pump chamber, reassemble and test the seal.