Home » How Gate Valves Work ?
Control Valves

How Gate Valves Work ?

Gate valves work by inserting a dam (“gate”) into the path of the flow to restrict it, in a manner similar to the action of a sliding door. Gate valves are more often used for on/off control than for throttling.

The following set of photographs shows a hand-operated gate valve (cut away and painted for use as an instructional tool) in three different positions, from full closed to full open (left to right):

Gate Valve Body Design


  • Suitable for oil, gas, air, heavy liquids, steam, non-condensing gases, abrasive and corrosive liquids
  • Sizes available range from standard cast configurations as small as 2″ to special fabricated valves exceeding 100″.
  • Standard cast configurations have ASME 125/150 bolting patterns and are rated atb150 psi.

How Gate Valves Work

Also See : Gate Valve Animation


  • High capacity
  • Tight shutoff
  • Low cost
  • Little resistance to flow
  • Ability to cut through slurries, scale and surface build-ups
  • Provide unobstructed flow paths that not only provide high flow capacity (Cv), but even allows slurry, large objects, rocks and items routinely found in mining processes to safely pass through the valve.


  • Poor control
  • Cavitate at low pressure drops
  • Cannot be used for throttling
  • Relatively low pressure limitation – general pressure limitations are 150 psi at maximum.

Articles You May Like :

Valve Types Characteristics

Objective Questions on Valves

Direct Acting Control Valves

What is Piston Check Valve ?

Instrumentation Inspection Report

Similar Articles:

Related Articles

Basics of Control Valves

S Bharadwaj Reddy

Types of Pneumatic Actuators Animation

S Bharadwaj Reddy

Basics of Valves Interview Questions & Answers

S Bharadwaj Reddy

Control Valve Interview Questions and Answers

S Bharadwaj Reddy

Functional Testing of Control Valve Positioners

S Bharadwaj Reddy

Electro Pneumatic Valve Positioner Schematic & Principle

S Bharadwaj Reddy

Leave a Comment

This website uses cookies to improve your experience. We'll assume you're ok with this, but you can opt-out if you wish. Accept Read More

WordPress Image Lightbox