Memory seal ball valves utifizes unique memory seal seats with high seal performance, meet all requirements for oil and gas pipeline service to handle a vast variety of fluids, slurries, semi-solids and almost any corrosive medium.
Design features

Compensate automatically for wear and flutuations of pressure and temperature.

Stem bearing reduce side thrust

Long cycle life

Low torques

Live-loaded thrust washer prevents galling

Fire safety and antistatic devices

Full guided stem-no leakage

All ball valve can be equipped with electric, pneumatic, hydraulic or gear actuators.

Advantages

SEATS"IN-TENSION"
Greater strength

Less fatigue

Positive bi-directional shutoff

Commpensate for temperature fluctuations

Uniform torque

High cycle life

Eliminate cold flow effects

2. LARGER SEALING AREA

Superior sealing
3. SELF-RELIEVING SEATS

For self-relieving applications, we supply special self-relieving seats or drill a hole in the ball.

Design norm

Basic design ASME B 16.34 BS5351

Face to face ASME B 16.10 GB12221

Flange dimension ASME B 16.5 GB HG SH

Socket-weld ASME B 16.11

Screwed-weld ASME B 1.20. 1

Valve testing API598