The China Valve Stem Packing Manufacturer specializes in producing high-quality braided packing for valve stems, utilizing a blend of aramid fiber and graphited PTFE fiber. This packing is impregnated with PTFE to enhance its chemical resistance and durability. Available in customized dimensions, it is designed to provide a reliable seal in harsh chemical environments. The packing is ideal for various industrial applications, including pumps and valves, ensuring minimal leakage and extended service life.
Product Name: Valve Stem Packing, PTFE Impregnated
Type: Braided Packing
Material: PTFE, Aramid Fiber, Graphited PTFE Fiber
Dimensions: Customized
Characteristics: Chemical-resistant
Operating Temperature Range: Maximum 300°C (572°F), Minimum -220°C (-364°F)
Fluids: Slurry Fluids
Usage: Valves, Reciprocating pumps, mixers, stirrers, reactors
Parameters: Speed < 22 m/s, pH 2 - 14
Applications: Chemical, agro-chemical, petrochemical, paper and sugar industries, power stations
Multi-Yarn Packing: Our multi-yarn packing features corners composed of 100% aramid yarns impregnated with PTFE. The friction faces are crafted from 100% graphited PTFE and are lubricated for enhanced performance. During the braiding process, the packing is re-impregnated with a blend of PTFE and inert lubricant. Available in preformed packing rings upon request. This packing combines the benefits of braided graphite-PTFE and aramid, offering high mechanical resistance and is specifically designed for use in reciprocating and rotary pumps.
What is a Non-Rising Stem Gate Valve?
A valve where the stem does not move vertically but rotates internally to raise or lower the gate. This design is ideal for installations with limited vertical space.
How Does a Non-Rising Stem Gate Valve Work?
The handwheel turns the stem, which in turn moves the gate up or down inside the valve body without changing the external height of the stem.
How Does a Rising Stem Gate Valve Work?
The handwheel lifts the stem and gate together, providing a visual indication of whether the valve is open or closed.
Which Valve Should I Choose?
Use a rising stem valve for above-ground applications where visibility and ease of maintenance are important.
Use a non-rising stem valve for underground or space-limited installations.
Conclusion
The choice between rising stem and non-rising stem gate valves depends on your specific application needs. For clear valve status indication and easy maintenance, go with a rising stem valve. For compact installations, a non-rising stem valve is the better option.
Customization is available. Please confirm with us about customized details.
Our valves are designed and manufactured in accordance with international standards such as API, ISO, DIN, EN, BS, JIS, and GOST. We can also customize products based on client specifications.