Hubbell C2542 check valve info

[mattc]

Does anyone have flow data for these?

I need to replace two on duty and standby pumps, I have Parker CK4A-9 as these are 2 1/2" the same as the discharge pipe size but the actual flow path through the valve looks much smaller.

Is it possible to inadvertently choke the flow with the discharge check valve despite the Qmax orifice plate being 22mm (ie smaller than the check valve flow path).

[RANGER1]

Assuming Hermetic Pump contact Hansen agent to get it right.

[mbc]

Hi
Look for
1)WITT Open type NH3 Pump Or
2)Hermetic WITT NH3 .
2end one is better