Product Description

FORGED TRUNNION MOUNTED BALL VALVE FOR OIL, GAS , WATER ETC.

Up Stream Sealing Two-way Valve
The up stream seal of the valve is fulfilled by the advanced spring pre-tighting seat package which has a feature of self-tightness. The two-way valve has two seats that can be sealed on two directions, so there’s no limitation of flow direction during installstion.

Double Block& Bleed Valve

Being up stream side 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 side. So, the stem packing or o-ring may be replaced under wording pressure. And to bleed the dirty fluid periodically can reduce damage of the sealing surface and prolong the service life of the valve.

Automatic Relief of the Cavity

If the pressure of the body cavity unusually goes up, KTZ valve can automatically relieve the pressure by compressing the spring in the spring pre-tighting seat package.

Firesafe Design:

When the non-metal seat are softened and burnt in case of the fire or unusual temperature increasing, the seat retainer, under the duty of the spring, will touch with the ball and from a metal to-metal contact, which can prevent sealing leakage. Same time, the middle flange and the upper part and lower part of the stem will from a metal-to-metal contact which can prevent stem leakage, conforming to API6FA or API**7.

Assistant Grease Injection Valve

When seat and stem sealing system is damage, the grease injection valve can inject the sealing grease into the valve for temporary sealing.

Flexible Operation
The seat and seat bearing using 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.