check valve

[rudiawan .]

all..
Do you know the check valve with specification like this :

CHECK AXIAL 300# RF STL, STEL S&D



thanks in advance

 

[Danlap]

Hallo,

Check axial = nozzle type, non-slam check valve
300# = ANSI flange class 300 rating
RF = Raised face
STL = usually Stainless Steel, but for me this is not a wise way to stamp it since there is so many SS family. More industrial standard is to write for example 316SS or 304 or 401, etc.
STEL = Stellited sealing area. This I am not so sure. More proper way to say it should be ST6 for Stellite 6, ST21 for Stellite 21, and so forth
S&D = ????

some fabricant may use different abbreviation, in order for end user to keep buying 'like to like' valves from the same manufacturer. When in fact it is quite similar with other products.

Regards,
Danlap

 

[LittleInch]

Think the S&D refers to the stelite area so shell and disc?

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[MJCronin]

My guess....

"S&D" might be for Sewer and Drain service. This abbreviation may not be referring to a physical characteristic of the valve itself, but might be more info about it's expected service.

https://www.ejprescott.com/hubfs/media/reference/Sewer&DrainPipeA-38.pdf

MJCronin
Sr. Process Engineer

 

[gustorf]

S&D means seat and disk.
ask Noreva for a quotation.

http://www.noreva.de