1.Up stream
Sealing Two-way Valve
The up stream seal of the Valve is fulfilled by the advanced
spring pre-tightened seat package which has a feature of
self-tightness. The two-way valve has two seats that can be
sealed on two directions, with no limitation of flow
direction during installation.
2.Double
Block &Bleed Valve
Spring loaded up and downstream sealing, the valve can bleed out the
trapped fluid in the body cavity when the valves is in fully
open or fully close position. the fluid is intercepted by
seats of up stream and down stream side. So, the stem
packing or O-ring may be replaced under working pressure.
And to bleed the dirty fluid periodically can reduce damage
of the sealing surface and prolong the service life of the
valve.
3.Automatic
Relief of the Cavity:
If the pressure of the body cavity unusually goes up,
Flo-Tite valve can automatically relieve the pressure by
compressing the spring in the spring pre-tightened seat
package.
4.Full Bore
or Reduce Bore:
Either full bore or reduce bore can be available according
to customers' requirements. For full bore type, the diameter
of the valve ball bore is the same as the pipe size, which
facilitates pigging operation.
5.Fireproof
Design:
When the non-metal seats are softened and burnt in case of
the fire or unusual temperature increase, the seat retainer,
under the duty of the spring, will make contact with the ball and
form a metal-to-metal seal, which can prevent internal
leak: meanwhile, the middle flange and the upper part and
lower part of the stem will form a metal-to-metal contact
which can prevent external leak and conform to API6FA or
API607.
6.Secondary
Emergency Sealing
When seat and stem sealing system is damaged, the grease
injection valve can inject sealing grease into the valve for
temporary sealing.
7.Stem
Sealing System
Two O-rings are adopted in/out the stem position with
reliable performance.
8.Stem
Extension
According to installation or operation need, the valve stem
may be extended. This design is suitable for under ground
application. The stem extension length can be manufactured
to meet customer requirements.
9.Flexible
Operation.
The seat and stem bearing adopt Teflon with small friction
and self-lubrication to reduce the valve operation torque.
The valve can be easily operated for long period even with
no sealing lubrication grease.
10.Multi-Operation Type.
The valve may be operated by hand, pneumatic operator,
motor, hydro-pneumatic operator and hydraulic operator, etc. |
