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ASTM A351 Gate Valve

Globe Valve

QS Valve: Xiamen Globe Valve
Steel globe valve to ASME B16.34, 1/2 to 12 inch and 150LB to 900LB, with flanged or butt weld ends for general process and utility piping.
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One-Minute Overview

  • Globe valve for starting, stopping and throttling flow in plant piping.
  • Sizes 1/2 to 12 inch, pressure classes 150LB to 900LB.
  • Flanged or butt weld ends, with outside screw and yoke for clear position reading.
  • Covers steam, water, oil and general chemical service.

A globe valve regulates flow by lowering a disc onto a seat in the middle of the body. The fluid turns through the valve, which costs some pressure drop but buys accurate throttling and a tight shut-off. Because the disc travels perpendicular to the seat, the valve can hold any intermediate position without the chatter a gate valve gives when partly open. Sizes run from 1/2 to 12 inch, classes from 150LB to 900LB, with flanged or butt weld ends.

Name: Globe Valve
Type: Globe Valve
Size: 1/2-12 Inch
Class: 150LB-900LB
Material: Carbon Steel, Stainless Steel
Standard: ASME B16.34
Connection: Flanged or Butt Weld
Feature: Renewable Seat, Outside Screw and Yoke

Selection is a question of pressure class, connection and trim. Flanged ends keep the valve replaceable at equipment nozzles and headers; butt weld ends suit high temperature steam lines where a flanged joint would creep. Carbon steel covers water, oil and steam at moderate temperature, while stainless steel handles corrosive or food grade fluids. Inside, a renewable seat ring means worn sealing surfaces are replaced instead of the whole valve, and an outside screw and yoke keeps the stem threads away from the fluid.

Installation rewards a little care. The valve should sit with the stem upright or horizontal so the packing is reachable, and the line must be supported so no bending load lands on the valve. Open the valve slightly before hydrotest to relieve trapped pressure on the seat, and warm steam lines slowly. When the stem starts to weep, repack the stuffing box; when shut-off gets soft, lap or change the seat ring. Size, pressure class and connection are confirmed per inquiry, and a detailed specification sheet is available on request.

FAQ

Q1. How does a globe valve differ from a gate valve in service?

A globe valve throttles well because the disc meets the seat across the flow, while a gate valve is meant to be fully open or closed. A globe valve costs more pressure drop but gives finer control and a more reliable shut-off, which is why it appears on steam and feed lines.

Q2. What does outside screw and yoke actually mean for me?

It means the stem threads sit outside the body, away from the fluid, so they stay clean and easy to grease. You can also read the position at a glance - stem up is open. Inside screw designs hide the threads in the fluid, which is cheaper but rougher on maintenance.

Q3. Will this valve drop a lot of pressure across the line?

Some, yes - the flow has to turn through the body, so a globe valve is never the low loss option. But that same geometry is why it controls flow so nicely. If you need a straight-through run with almost no drop, that is a ball or gate valve conversation.

Q4. How long will production take for a globe valve order?

Standard sizes are typically ready within 30 days, and in-stock items ship immediately. Larger or custom orders get a confirmed date per order, because the schedule depends on quantity, material, the bolt pattern you specify, and how busy production is at the moment you order.

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