Design Features

Anti-Blowout
Stem Design

Stem seal integrity is achieved by the use of
three o-rings (or two
o-rings and a graphite
gasket). Upper o-ring
(or graphite gasket)
can be replaced with
the valve in line and
under pressure.

Emergency Sealant Injection System

The Sealant Injection System located on
the Bonnet can be utilized in case of
emergencies, o-ring damage, or if stem
leakage occurs.

Double Sealed
Envelope
Connections

Double o-rings or a
combination of an or
i n g a n d f i r e s a f e
g a s k e t o n b o d y /
adapter connections to
e n s u r e p o s i t i v e
sealing. This makes
the P3 suitable for
above or below ground
service.

Heavy Duty Bearings

Trunnion are supported by heavy duty Teflon
coated Steel Bearings. Thrust load on the
ball is supported by large trunnions mounted
within captured trunnion blocks, resulting in
low operating torque and seat wear.

Double Sealed
Envelope
Connections

Double o-rings or a
combination of an or
i n g a n d f i r e s a f e
g a s k e t o n b o d y /
adapter connections to
e n s u r e p o s i t i v e
sealing. This makes
the P3 suitable for
above or below ground
service.

Antistatic Device

A spring between the
trunnion and the ball or
between the stem and
the gland plate permits electrical continui y
between all valve
components.

 

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