Single-fluid flow valve is a special valve to prevent mud, use it in case of mud pump shutdown
to protect against mud. This valve system valve, which by media pressure to achieve between
the spool and the body metal to metal seal, the greater the pressure medium, the better the
sealing performance. Valve cavity can withstand line pressure at any time.
the implementation of standard products: API SPEC 6A、SY5156-93
Working principle, structure and use
1, the body is processed with alloy steel forgings, has strong mechanical properties, can withstand
high pressure, with safe and reliable performance. Valve cover and valve body with bolts, seals
for the valve cover of the inner ring and the valve body seal, seal and reliable performance.
It makes valve cover and valve body assembly space is small, thus reducing the corrosive
medium on the bolt and screw the bolt erosion and reduce the load.
Spool and valve body sealing surface, welding alloy, so that it has good wear resistance
and corrosion resistance, valve core material with anti-sulfur steel, the hardness of other methods
for restricted parts, so the valve can be in the H2S-containing environment.
2, according to the flow valve on the pipeline will be installed on the valve body. Valve by
the pressure upstream and downstream of the pressure to achieve movement and sealing, which
Can not be stuck valve.
Single-flow valve model and the main parameters
|
Type |
Rated temperature level0C |
Working pressureMPa |
|
DF52-（ ） |
-29~121 P.U |
35、70、105 |
|
DF65-（ ） |
-29~121 P.U |
35、70、105 |
|
DF78-（ ） |
-29~121 P.U |
35、70、105 |
