What is the difference between gate valve and globe valve

The external housing (shell) of gate and globe valves are similar, but the Globe Valve is designed to serve as a regulating valve, meaning that it can adjust the flow by the percentage of the opening. However, the Gate Valve is not designed to regulate flow, but to stop the flow. A gate valve should always be either fully open or fully closed.

The main difference is in the form of the inner elements and the form of the flow inside the valves. In addition, the gate valve may have a rising or non rising stem while the globe valve is typically a rising stem design. The direction of flow through a gate valve is not important. However a globe valve has a flow direction indicated on the outer shell (body) which indicates the direction of flow from beneath the seat.

In a gate valve, the closure element is a plate or disk which travels parallel to the plane of the seat. The gate in a dam is a well known example. In a globe valve, the closure element is usually called a "poppet", and it travels perpendicular to the plane of the seat.

There are specific advantages and disadvantages to each type depending on the application. The application for a globe valve is regulating flow. It is not well suited for full stop isolation. The gate valve is an isolation valve and not designed to regulate flow.

A gate has a rising disc and is considered positive shut off a Globe offers much more friction losses and is great for throttling ALSO a globe valve is amazing on fire stand pipe systems when one needs to balance the pressure placed on a closed

Features

• Meet design ANSI B16.5, B16.34, B16.10,B16.25 (for NPS≤24), MSS SP-44(for NPS>24), API-600
• Straight and Y patteren body design
• OS & Y,outside screw and yoke
• BB,Bolted bonnet
• Yoke intergral with bonnet
• Rising stem and handwheel
• Loose disc,choice of plug or ball
• Renewable seat ring or Body seat ring
• Impact handwheel for 10" & above
• Horizontal service
• Flanged or buttwelding ends
• Normal Size: 2"~20"
• Pressure: 150LB~2500LB
• Connection: Flanges,RTJ Flange,Butt Weld,Groove
• Material:Carbon Steel, Forged Steel
• Carbon Steel: ASTM A105, ASTM A216 WCB, ASTM A217 WC6, ASTM A217 WC9, ASTM A217 C5, ASTM A217 C12, ASTM A217 C12A
  Stainless Steel: ASTM A351 CF8, ASTM A351 CF8M, ASTM A351 CF3, ASTM A351 CF3M, ASTM A351 CM8, ASTM A890 GR4A, ASTM A890
• Operate: Handwheel, Worm gear, Gearbox, Pneumatic Actuator, Electric Actuator, Hydraulic Actuator.

Standards

Steel Globe Design: API 600 / BS1873

Steel Valves: ASME B16.34

Face to Face according to: ASME B16.10

Flanges Ends according to: ASME B16.5

Butt Welding Ends according to: ASME B16.25

Inspection and Testing according to: API 598 / API 6D

Cast Steel Globe Valve

Forged Steel Globe Valve, Types Of Globe Valves, Angle Globe Valves, Carbon Steel Globe Valve

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