Wuxi PYNOS Flow-tech Co., Ltd. : Your Professional Gate Valve Supplier in China

PYNOS VALVE is a professional valve manufacturer integrating research, development, testing, production, sales, and after-sales service. Additionally, we are equipped with world-class valve processing and manufacturing equipment.

Advanced Production Equipment

Our factory is equipped with advanced CNC lathes, boring machines, CNC grinding machines, drilling machines, milling machines, and planers.

Wide Applications

Our products are widely used in the petroleum, chemical, power, natural gas, and coal chemical industries.

 

Guaranteed Quality

Our products have obtained multiple certifications, including ISO 9001, CE, and SIL3.

Customizable

The materials, dimensions, and connection methods of our products can all be customized.

 

 
  • Slap Gate Valve
    Slap Gate Valve is a gate valve used for pipeline medium isolation and full-circuit flow control. It can be ordered in bulk and customized according to pressure level and size.
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  • Expanding Gate Valve
    Expanding Gate Valve is a full-bore shut-off valve for pipeline media isolation, available for bulk ordering or custom-made to suit specific operating conditions.
    read more
  • API 6A Gate Valve
    API 6A gate valves are high-pressure valves that conform to the American Petroleum Institute (API) standard and are used in the oil and gas industry, particularly in wellhead equipment, high-pressure
    read more
  • Flanged Cryogenic Gate Valve
    A flanged cryogenic gate valve is an isolation valve designed for pipelines carrying cryogenic media such as liquefied natural gas, liquid oxygen, and liquid nitrogen.
    read more
  • Pressure Seal Gate Valve
    Pressure seal gate valves are industrial valves that combine high pressure resistance, high temperature resistance, high reliability, and ease of operation. They are widely used in thermal power
    read more
  • Slide Gate Valve
    A slide gate valve is a type of valve that controls flow by sliding a flat plate (gate) into the flow path to block or allow material to pass through. These valves are commonly used for free-flowing
    read more
 

Introduction

 

 

A Gate Valve is a type of linear-motion valve used to start or stop fluid flow in a pipeline. It works by lifting a flat or wedge-shaped gate (disc) up and down to open or close the flow path.

 

Specification

Product name

Gate valve

Size Range

2"~48"

Pressure Range

150LB~2500LB

End Connection

Flanged end /Butt welding end

Operation

Manual operation,Actuated operation

Body

Carbon steel,Stainless steel,Duplex Stainless steel,etc.

Trim

Carbon steel+ENP,Alloy steel+ENP,Stainless steel,Duplex stainless steel,etc.

 

Features of Gate Valve

 
Slap Gate Valve
  • Full Bore Design

    The flow path is straight. Pressure loss is very low when fully open.

  • Tight Shut-off

    The gate provides good sealing when fully closed.

  • Bidirectional Flow

    Most gate valves can work in both flow directions.

  • Slow Operation

    The valve opens and closes gradually, which reduces water hammer.

 

Common Types of Gate Valves

 

1

Rising stem gate valve

The stem moves up and down, showing valve position.

2

Non-rising stem gate valve

The stem rotates but does not move vertically.

3

Wedge gate valve

Uses a solid, flexible, or split wedge for sealing.

4

Parallel slide gate valve

Uses parallel discs for high-temperature service.

 

 

Certificate

 

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FAQ

 

Q: What factors should buyers consider when selecting a gate valve?

A: Buyers should focus on pressure rating (PN/Class), temperature range, body material, and seat design. The valve must match the pipeline’s working conditions. Media type, corrosion level, and installation space also affect selection. Choosing the correct specification ensures long service life and stable sealing performance.

Q: What standards and certifications should buyers check before purchasing?

A: Buyers should verify compliance with API, ANSI, DIN, BS, or ISO standards. For specific markets, certifications such as CE, ISO 9001, or fire-safe approvals may be required. Standard compliance ensures compatibility, safety, and acceptance in international projects.

Q: What maintenance and service life expectations should buyers have?

A: A quality gate valve offers low maintenance and long service life when used for full open or full close operation. Buyers should ask about stem design, surface treatment, and spare parts availability. These factors reduce downtime and total ownership cost.

We're well-known as one of the leading gate valve manufacturers and suppliers in China. If you're going to buy high quality gate valve, welcome to get more information from our factory. Customized orders are welcome.

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