Kidde Fenwal WK-877690-200 — 2 in. manifold El-Check, the non-return valve fitted between a clean agent cylinder and the common discharge manifold.
In a multiple cylinder bank every cylinder discharges into one manifold, so without a check valve taking one cylinder off line opens the whole manifold to atmosphere. The El-Check closes that path, letting a cylinder come off for weighing or recharge while the rest of the system stays closed. Kidde requires it installed at the manifold vertically, arrow following flow.
- 2 in. connection to the system manifold, 2 in. 11-1/2 NPT thread
- Stainless steel check
- Brass valve body on the current KiddeFenwal generation; the earlier Fenwal generation of the same 2 in. valve used zinc plated steel with a nitrile seat
- For use with UL Listed, ULC Listed and FM Approved Kidde and Fenwal engineered clean agent systems
Size is the whole difference between the siblings: WK-877690-151 is the 1.5 in. valve, WK-877690-301 the 3 in. Victaulic version, 878743 the 2-1/2 in. valve in older Fenwal numbering. One suffix worth checking against the system parts list: KiddeFenwal tabulates the 2 in. valve as WK-877690-201.
