PARVEEN standing valves are normally used in intermitting or chamber lift wells in the bottom of the tubing or chamber. The standing valve seats on the No-Go of the seating nipple and seals in the honed bore of the nipple to prevent the fluid from flowing back into well bore when high pressure gas is injected under a slug of fluid. PARVEEN manufactures E-3 type of standing valve, in all popular sizes. A complete line of seating nipples are avilable to accept the standing valves.

The E-3 Equalizing Standing Valves has a standard fishing neck and may be equalized and retreived by wireline. The equalizing feature allows the operator to open ports below the valve and seat without lifting the hydrostatic head. This feature in many cases eliminates the need for an operator to pull a wet string of tubing. This valve may also be used as test plug for testing tubing for pressure leaks above the valve. Carbide balls are avilable for severe service in sandy wells.

Seating Nipples
The E Seating Nipples are precision nipples that contain a honed bore to accept and seal the standing valve. They are offered in a wide range of sizes compatible with the tubing string and a large selection of bores for different sizes standing valves.