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  • back valve

back valve

Bonnet and body connected by bolts, seals for sealing ring on the bonnet and valve body wall seal, sealed performance is reliable.This product design and manufacture of full compliance with API Spec 6 a "specification for" wellhead and Christmas tree equipment requirement, can be at home and abroad in accordance with API Spec 6 a specification form a complete set of equipment and used interchangeably. This body dogs for alloy steel forgings, with strong mechanical properties, can bear high pressure, has safe and reliable performance.

■ Precauciones

Operating Instructions
According to the flow valve on the pipeline will be installed on the valve body.
Spool by upstream and downstream pressure and sealing pressure to achieve movement, and thus can not be stuck valve.
Maintenance instructions
Replace the valve and seals
Remove the valve cavity pressure, remove the valve cover bolts and remove the valve cover.
Remove the spool and put a new plug. When replacing, it must be milled along the spool and valve sealing surface.
Check the valve cover seal is intact advised, if damaged, should be replaced immediately. 

Bonnet and body connected by bolts, seals for sealing ring on the bonnet and valve body wall seal, sealed performance is reliable. It makes the valve cover and body assembly clearance is small (0) design, thus reducing the corrosive medium of bolt and screw hole of erosion and reduce the load. Valve core and valve sealing surface surfacing welding carbide, make it have good wear resistance and corrosion resistance, using the sulfur steel valve core material, other parts using the method of limit

Main Technical Parameters

This product design and manufacture of full compliance with API Spec 6 a "specification for" wellhead and Christmas tree equipment requirement, can be at home and abroad in accordance with API Spec 6 a specification form a complete set of equipment and used interchangeably. The valve system check. It depends on the pressure of medium to realize metal to metal seal between the valve core and valve body, medium pressure, the greater the sealing performance, the better. Cavity can withstand the line pressure at any time. This body dogs for alloy steel forgings, with strong mechanical properties, can bear high pressure, has safe and reliable performance.