Check Valve

A metal body with a seat that houses the valve stem.

Advantages

prevents spontaneous filling of the liner;
valve-assembly protection;
spring-loaded element;

Specifications

differential pressure held bottom-up: up to 70 MPa
internal-parts material: easily drillable metal
port diameter: 12 mm
total circulation flow area: 1000 mm²
size range: 102/140(146); 114/168(178); 127/178; 146/219(245); 168(178)/245; 194/245(273)

Application area and experience

The check valve prevents spontaneous filling of the liner with cement slurry and eliminates back-flow of cement slurry from the annulus into the liner.