What is the Difference Between Rising and Non-Rising Stem Gate Valves?

19 Jul,2024
industrial factory

The main difference between rising and non-rising gate valves lies in the visibility of the stem: rising stems move up and down, while non-rising stems do not.

Rising Stem Gate Valve vs Non-Rising Stem Gate Valve

For a better understanding of the differences between rising and non-rising gate valves, we provided a chart below:

AspectRising Stem Gate ValveNon-Rising Stem Gate Valve
DefinitionThis type of gate valve has a stem that visibly moves up and down as the valve is operated.This gate valve has a stationary gate valve, meaning it does not move up and down externally.
Working PrincipleThe stem is externally threaded and capable of moving vertically. As the handwheel is turned, the stem rises and falls. This action indicates the valve’s open and closed position.The gate moves along the internal threads of the stationary stem. The stem is not moving externally. This feature makes the non-rising stem gate valve conserve vertical space.
AdvantagesPosition indication
Maintenance
Reliability		Space efficiency
Protection
Cost-effective
Rising Stem Gate Valve vs Non-Rising Stem Gate Valve

Which Gate Valve Should You Use?

Gate valves have been utilized across diverse industries. They are recognized for their wide-range applications. However, the decision whether or not you should use a rising or non-rising stem gate valve depends on your preferences.

To help you make an informed decision here’s our recommendation:

Best Application for Rising Stem Gate Valves

These valves are preferred when you need a clear visual indicator of the valve’s position. The goal would be to ensure operational safety and efficiency. Rising stem gate valves are perfect for high-pressure and high-temperature systems. Industries such as oil and gas, petrochemical, and power generation industries could benefit from these gate valves.

Best Application for Non-Rising Stem Gate Valves

The next type of gate valve is your go-to choice suppose you face space constraints. Non-rising stem gate valves have a compact design for easy integration into tight spaces. These valves find their proper place in low to moderate-pressure systems. Thus, water treatment, building services, and general industrial processes are the ideal environments for non-rising stem gate valves.

PANS: China Rising Gate Valve Manufacturer

With over 30 years of professional experience, PANS specializes in producing a full range of steel valves, including plug valves, gate valves, globe valves, ball valves, check valves, and more.

The Chinese company boasts a portfolio of 60 valve series and holds 100 patents. This demonstrates PANS capability in valve innovation and design.

PANS provides one-stop application solutions for a variety of industries, including petroleum, chemical, power, energy, LNG, natural gas, and other related fields. Their valves are designed to meet or exceed international standards, ensuring reliable performance in demanding industrial environments.

Ask for Your Quote Now! >>

FAQ

  • What is the difference between rising and non-rising stem gate valves?

    How the stem moves is the primary difference between a rising and non-rising stem gate valve. In a rising stem gate valve, the stem visibly moves up and down. In contrast, a non-rising stem gate valve has a stem that remains stationary while the gate moves up and down.

  • What are the advantages of a rising stem gate valve?

    - Position indication: Operators can visibly see the stem’s vertical movement, indicating that the valve is closed or open.
    - Maintenance: Exposed stems are accessible, making them easy to lubricate.
    - Reliability: Because you can see the stem moving up and down, you would know if the valves are operating well.

  • What are the advantages of a non-rising stem gate valve?

    - Space efficiency: The stationary stem makes the non-rising stem gate valve compact. This makes the valves suitable for installations with limited vertical space.
    - Protection: Stem threads are protected by the body. This quality protects them from environmental factors and possible damage.
    - Cost-effective: Because a non-rising stem gate valve has simpler designs, it costs less.

  • How does a non-rising stem gate valve work?

    A non-rising stem gate valve operates by having the gate move up and down along the internal threads of the stationary stem. When the handwheel is turned, it rotates the stem, which in turn moves the gate up or down to open or close the valve.

Article Source
PANS uses only high-quality sources, including peer-reviewed studies, to support the facts within our articles. Our commitment to accuracy and reliability ensures that readers receive well-researched information they can trust.
Tags: valves

Search

Categories

Tags

valves

Product