Products

Sour Gas

Sour Service Valves
Sour Service Valve
Smith manufactures a complete line of valves in full compliance to NACE Standard MR-01-75 and MR-0103.  All Body/Bonnet, Packing and Gasket and Bolting materials acceptable for sour gas service are available. However, NACE valves have special limitations on bolt and trim materials to ensure their resistance to corrosion by sulfides (“sour gas”) found in processing crude oil.
TRIM MATERIALS
CODE STEM WEDGE/DISC SEAT
K 410, 22HRC Max 410, 22HRC Max HF
A 316 316 316 *
S 316 316+HF *
W STELLITE
D MONEL MONEL, 35HRC Max MONEL


* Stellite seat in Globe & Check when body not 316 or 316L
HF = “Hard Faced”, such as Stellite #6.

Customer must specify desired material as there is no single “NACE Valve”.

 

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