Mecair diaphragm kits, DB part numbers for 200, 300, 400 and 600 series
Mecair pulse valves are repaired with DB-series diaphragm kits. The number in the code follows the valve size and the suffix follows the compound, so a 200 series 1" valve in standard service and the same valve in Viton use two different DB numbers. These are the DB kits VDC holds in stock.
Family: DB-series (Mecair)
Part numbers
- DB16-G: 200 series diaphragm kit, ¾"
- DB18-G: 200 series diaphragm kit, 1"
- DB18M-G: 200 series diaphragm kit, 1", M variant
- DB18V-S: 200 series Viton diaphragm kit, high temperature
- DB112-G: Diaphragm kit for 214 / 314 pulse valves
- DB112-G-SR: Spring-return diaphragm kit for 214 / 314 valves
- DB114: 300 series C diaphragm kit, 1¼"
- DB116-C: 300 / 400 series diaphragm kit, 1½"
- DB116V: 300 series Viton diaphragm kit, 1½"
- DB120-C: 600 series diaphragm kit, 2½"
- KOR514G0: O-ring kit for VNP 514 / 614 immersion valves
How to select
Identify the valve series first
Mecair valves are grouped as 200 series (threaded), 300 series (compression fitting), 400 series and 600 series. The valve body carries the series number, and the DB kit follows from it together with the port size.
Standard, Viton or spring return
A -G suffix is the standard compound, V or -S denotes Viton for high temperature and aggressive media, and -SR is the spring-return build used on valves that must close positively against back pressure.
Immersion valves
VNP 514 and 614 immersion tube valves are serviced with the KOR514G0 O-ring kit rather than a DB diaphragm kit.
Frequently asked questions
Which DB kit fits a Mecair 200 series 1 inch valve?
DB18-G for standard service and DB18V-S when the filter runs hot or handles aggressive gas. DB18M-G is the M variant of the same size.
Can I use a Goyen kit on a Mecair valve?
No. Goyen K-series and Mecair DB-series diaphragms are dimensionally different. Both brands are now part of Pentair, but the spare parts are not interchangeable.
Do you also supply the complete Mecair valve?
Yes, the 200, 300 and 400 series valves are in the catalogue alongside the kits. Send the part number on the valve body and we quote both options.
Mecair valve to DB kit cross-reference
Match the valve series and size to the DB kit. Viton kits are for high-temperature service, the SR kit is the spring-return version.
| Valve series | Size | Standard kit | Viton kit | Variant |
|---|---|---|---|---|
| 200 series | ¾" | DB16-G | On request | - |
| 200 series | 1" | DB18-G | DB18V-S | DB18M-G (M variant) |
| 214 / 314 | 1¼" | DB112-G | On request | DB112-G-SR (spring return) |
| 300 series C | 1¼" | DB114 | On request | - |
| 300 / 400 series | 1½" | DB116-C | DB116V | - |
| 600 series | 2½" | DB120-C | On request | - |
| VNP 514 / 614 immersion | - | KOR514G0 (O-ring kit) | - | - |