Yash23
Mechanical
- Jan 5, 2015
- 3
Hi everyone!
I'm doing technical bid evaluation of valve and I came across with the below query.
As per our standard specification, seat and disc seating surfaces shall be hard faced with Stellite 6. Our valve body & trim is A351 CK3MCUN for CL. 1500 nozzle check valve. One vendor offered integral seat instead of HF while the other vendor informed that non of their customers have previously asked to HF 6Moly material & is offering a screwed nozzle seat with same trim material.
My question is, A351 CK3MCUN exempted for HF? If I'm not mistaken, Stellite-6 is harder than A351 CK3MCUN.
Thanks!
I'm doing technical bid evaluation of valve and I came across with the below query.
As per our standard specification, seat and disc seating surfaces shall be hard faced with Stellite 6. Our valve body & trim is A351 CK3MCUN for CL. 1500 nozzle check valve. One vendor offered integral seat instead of HF while the other vendor informed that non of their customers have previously asked to HF 6Moly material & is offering a screwed nozzle seat with same trim material.
My question is, A351 CK3MCUN exempted for HF? If I'm not mistaken, Stellite-6 is harder than A351 CK3MCUN.
Thanks!