Share optimized solutions, professional valve knowledge and industry news

6 Main Performance Characteristics Of The Pneumatic Diaphragm Single-Seat Control Valve

The pneumatic diaphragm single-seat control valve is to take the compressed air as the power source, acting on the diaphragm and then pushing the stem to control the globe valves.
Table of Contents
    Add a header to begin generating the table of contents

    What is Pneumatic Diaphragm Single-Seat Control Valve?

    The pneumatic diaphragm single-seat control valve is to take the compressed air as the power source, acting on the diaphragm and then pushing the stem to control the globe valves.

    Usually, it will be complete with a valve positioner, converter, solenoid valve, and other accessories to drive the control valves, to achieve on-off or proportional regulation, which depends on the control signal of the industrial automation control system to adjust the pipe medium.

    The control valve has the following characteristics: small size, lightweight, high performance, large capacity, and the general regulating valve IEC standards. It is suitable for the general fluid medium and process conditions of the production process system. The utility model is composed of a pneumatic multi-spring film actuator and a low flow resistance single-seat valve. The new actuator has a high degree, lightweight, simple installation and calibration, compact structure, smooth flow passage, and large flow coefficient.

    single seated globe control valves
    single-seated globe control valves

    With industrial automation development, the control valve is used more and more widely as the final actuator of the Automatic Control System. The quality and safety of production are directly related to the application of the control valve. Among all kinds of control valves, the pneumatic diaphragm control valve is widely used as a control valve with a simple structure, convenient use and maintenance, and intrinsic safety characteristic.

    single seated globe valves
    single-seated globe valves

    6 Main Performance Characteristics Of The Pneumatic Diaphragm Single-Seat Control Valve

    1. The pneumatic diaphragm control valve features a top-guided single-seat, compact structure, fewer parts, and easy maintenance.
    2. The metal-to-metal control valve is suitable for many kinds of applications and reaches the IV class leakage standard, soft seal structure valve core reaches the VI class leakage standard.
    3. The valve body is designed as a low flow resistance channel with the same cross-section according to the fluid mechanic’s principle, and the rated flow coefficient is increased by 30%.
    4. The adjustable range is large; the inherent adjustable ratio is 50. The actuator adopts a multi-spring structure. The height is reduced by 30%, and the weight is reduced by 30%.
    5. Bellows seal type control valve, the stem movement to form a complete seal, stop the leakage of fluid.
    6. Globe-type control valve with an insulation jacket, used for fluid cooling easy crystallization, and solidification caused by blocking occasions.

    Download Catalogs

    Final Thoughts

    In this post, we have learned the main performance characteristics of single-seat control valves. There are lots of materials, pressure, accessories, characteristics, functional, and split pressure control of control valves, so if you are interested in more knowledge, please just click the following posts.

    Contact Us

    With expertise in valves and rich experience in the oil&gas, chemical industry, textile mills, power plants, and sugar mills. THINKTANK has become the premier manufacturer of next-generation precision control valves.

    With a customer base that includes over 42 of the world’s leading engineering&contractors and international valve brands, THINKTANK Valves offers cost-effective valves that help our customers achieve automated process control without paying high prices.

    solenoid valve in control valve

    What is SOV(solenoid valve) in Control Valve 

    Solenoid valves are often used in applications where a control valve is required to be actuated quickly to a fault position under certain conditions. It is generally designed to be in the air supply line and is an important accessory to the air control system.

    Read More
    diesel generators

    Fusible Link Valves For Diesel Generators

    The fusing link valve for the diesel generator set includes the valve body and actuator, and the valve body and actuator are fixed by a fixed bracket/yoke. The actuator of the fused valve includes the shaft, fusible link, manual/gear operator, actuator protection cover, limit switch, etc.

    Read More
    sluice gate valve

    Sluice Gate Valve 101

    The sluice gate valves are real end-of-line valves designed to hold back water with minimal leakage in applications such as drains, sump tanks, and distribution boxes.

    Read More
    condensate recovery system

    Condensate Return System

    Condensate has a large amount of heat, generally accounting for about 20-30% of the total heat of steam, and for some equipment, it can be as high as 40%.  Therefore, if high-temperature condensate can be recycled as boiler make-up water or used for secondary flash steam, it not only saves industrial water but also saves a large amount of fuel.

    Read More
    three way control valves

    Water Mixing

    Water mixing is the mixing of water at different temperatures, and the resulting mixing temperature varies at different hot and cold flows

    Read More
    uni directional knife gate valve manufacturer

    Knife Gate Valve 101

    Knife gate valves are primarily made for isolation and on-off services in systems with high suspended particle contents. Knife gate valves are particularly useful for managing viscous, corrosive, and abrasive media in addition to the slurry.

    Read More
    Joy Preview

    A good partner is a lasting and effective investment

    Focused on Control Valves & Self-Operated Pressure Regulators For Over 10 Years

    Grow Your Business is Our Top Priority. Contact Now You Will Get More Than You Expect.

    Joy Preview


    Just leave your name, email, and simple message or requirements, We will contact you within 1 hour.

    WhatsApp: +86 185 1656 9221

    Skype ID: sowell85

    Wechat ID: +86 189 5813 8289