Advantages
Connection Type of Valve Body, Valve Bonnet and Union
I.online repair
Valve bonnet can be easy to remove without dismantling valve from pipeline when inner parts need checking and replacing. This kind of design allows simple operation without special tool.
II. Flexible and tidy supply
The material for valve stem, valve wedge, valve seat and elastic valve seat is selectable, which can expand the range of valve application. With triple plastic coating in valve body and valve bonnet, wearing resistance and corrosion resistance can be obtained.
III. Fast operation can be provided by dual lead thread design
1. ASME/ANSI serial dual lead thread design make valve stem install in wedge through valve stem and support assembly. This is designed as dual lead thread. Valve stem is well
grinded. It possesses O-ring and extrusion proof seal. This kind of design can produce economic and efficient result.
2. Mud valve is designed as dual lead thread, the working pressure for valve stem nut, support and valve stem are 2000psi, 3000psi and 5000psi respectively (4" or larger valve with working pressure of 5000psi shall be designed as single lead thread and lifted by bearing transmission) .
3. In the process of loading, the rising stem can protect stem thread.
4. Observation lens are equipped on 3000psi large valve and 5000psi large valve, which is used to observe and confirm the location of wedge.
IV.Reliable seal can be obtained from special valve seat
Mud gate valve seat is specially designed to provide reliable interdict in wearing and corrosive service environment.
1. Valve seat composes of two identical metal wearing resistant ring wrapped in a elastic rubber body, and form and cylinder. Space for wedge and gap for two balls are left. The closed wedge tightly closes to downstream wearing resistant ring. Meanwhile, elastic rubber body can provide reliable sealing at the gap.
2. Cylindric valve seat assembly and valve cavity are closely attached, which can expanded to the outlet of valve through the pressure from valve bonnet and the support ring at the bottom of valve seat. When valve bonnet and valve body are tightly screwed, valve stem pin can expand from two wearing resistant ring, in this way, the valve seat expansion occurs. Valve seat support ring guarantee that the elastic rubber and valve cavity are closely attached. This kind of design guarantee valve seat, valve body and valve outlets can realize reliable sealing. Even though the wedge and seat appear scratches or wears in the process of working, the sealing is proved efficient. When repairing, the single part of valve can be removed from valve body to replace.