Release Date: September 19,2026

MECAIR pulse jet valve diaphragm is the core wearing spare part for dust collector pulse jet valves, widely used in baghouse dust removal systems, cement plants, mining, steel mills, chemical industry and other industrial dust‑removal equipmentGoyen Meca.... Correct selection of diaphragm model, port size and rubber material directly determines the service life and stable blowing performance of pulse valves. This article sorts out full compatible ordering codes, matched valve models, port dimensions and material options for MECAIR DB series diaphragms, to help maintenance engineers, purchasing staff quickly confirm correct spare parts when searching Mecair diaphragm, Mecair repair kit, pulse valve membrane, DB16 diaphragm, DB18 diaphragm, DB116 diaphragm and other keywords on Google.

Full Model Matching Table for MECAIR DB‑Series Diaphragms

1. Ordering Code: DB16 Fitted Valve Code:VNP206, VEM206, VEM216, VNP306, VEM306 Valve port size:3/4" Available Material:Nitrile/Buna(NBR), FKM
2. Ordering Code: DB18 Fitted Valve Code:VNP208, VEM208, VNP308, VEM308, VNP408, VEM408, VNP608, VEM608 Valve port size:1" Available Material:Nitrile/Buna(NBR), FKM
3. Ordering Code: DB18M Fitted Valve Code:Compatible for 1‑inch MECAIR VNP & VEM series pulse valves Valve port size:1" Available Material:Nitrile/Buna(NBR), FKM
4. Ordering Code: DB112 Fitted Valve Code:VNP212, VEM212, VNP312, VEM312 Valve port size:1‑1/2" Available Material:Nitrile/Buna(NBR), FKM
5. Ordering Code: DB114 Fitted Valve Code:VNP214, VEM214, VNP314, VEM314 Valve port size:1‑1/2" Available Material:Nitrile/Buna(NBR), FKM
6. Ordering Code: DB116 Fitted Valve Code:VNP216, VEM216, VNP316, VEM316, VNP416, VEM416, VNP616, VEM616, VNP616, VEM716 Valve port size:2" Available Material:Nitrile/Buna(NBR), FKM
7. Ordering Code: DB120 Fitted Valve Code:VNP220,VEM220, VNP320,VEM320, VNP420,VEM420, VNP620 VEM620, VNP620,VEM720 Valve port size:2‑1/2" Available Material:Nitrile/Buna(NBR), FKM

Material Selection Instructions

• NBR(Nitrile/Buna):Standard general‑purpose material, suitable for conventional compressed air working condition, working temperature range ‑10℃ ~ +80℃, cost‑effective, fit for most ordinary dust collector working environmentsAlibaba.
• FKM(Fluororubber):High‑end resistant material, for high‑temperature, oily, corrosive harsh working conditions, working temperature range ‑20℃ ~ +200℃, recommended for cement kiln, chemical dust‑removal and other severe‑environment baghouse systems.

Installation & Usage Tips

1. Before replacement, cut off compressed air supply and release residual pressure inside the valve.
2. Clean valve seat surface, remove old diaphragm fragments, dust and impurities, avoid scratches causing air leakage after installation.
3. Confirm ordering code DB***, matched VNP/VEM valve model, port size and rubber material(NBR or FKM) are fully consistent with original spare part. Wrong model will cause blow failure, air leaking or early diaphragm rupture.
4. Tighten bolts evenly with cross‑sequence, do not over‑torque to prevent diaphragm deformation.
5. After installation, carry out air‑tightness test; check for air leakage at valve outlet and joint position.

Common Search Keywords for Reference

Mecair diaphragm repair kit, Mecair DB16 diaphragm, Mecair DB18 diaphragm, Mecair DB18M diaphragm, Mecair DB112 diaphragm, Mecair DB114 diaphragm, Mecair DB116 diaphragm, Mecair DB120 diaphragm, Mecair VNP VEM pulse valve spare parts, pulse jet valve membrane, baghouse diaphragm replacement, NBR pulse valve diaphragm, FKM Mecair diaphragm.

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