Piston check valve 313 series
threadedfor oil industry applicationsfor steam

piston check valve
piston check valve
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for oil industry applications, for steam
stainless steel, wrought steel
Other characteristics
horizontal, standard, high-temperature

Min.: -29 °C (-20 °F)

Max.: 425 °C (797 °F)


136 bar (1,972.5 psi)


Min.: 0.375 in

Max.: 2 in


The 313 series has two types which are either piston type or ball type. The piston type has the SS 302 spring, while the ball type does not have one. The unit is made of either carbon steel or stainless steel. Carbon steel types have Vz stellite, which ensures the strength of the seat. Stainless steel types have the Trim 10 standard SS 316. The unit has a weight of 800 lbs. Forged carbon Steel check valve TRIM8 SW Class 800 standard bore for petroleum industry, steam, oil and gas and high pressure. Piston type and bolted bonnet. Stainless Steel + graphite bonnet gasket. Compatible with explosive atmosphère, ATEX Zone 1&21 and Zone 2&22. SPECIFICATIONS : • - respect the flow direction (mdicated by the arrow) • - Standard bore • - Piston type • - Horizontal position only • - Bolted bonnet • - Forged carbon Steel A105N • - Vi stellite ( Trim 8 ) • - Class 800 • - Phosphate protection. 5 pm thickness USE: • - Petroleum industry. steam. high pressure • - Min and max Température Ts : - 29°C to + 425°C • - Max Pressure Ps : 136 bars ( see graph )


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.