Flat Gate Valve

1. Design and manufacture standard: API6D/ASME B16.34
2. Face to face: ASME B16.10
3. Flange ends standard: ASME B16.5
4. Inspection and test standard: API598

Get A Quote

Description

Cast and weld two structure with body
The seat ring uses the floating seat ring structure with o-seal ring sealed and pre-tightening force applied to have inlet and outlet dual-way sealed, and the open-close moment with this structure is 1/2 that of common valves only, able to lightly open and close valves.

API 6D Flat Gate Valve FAQs

1. What is a flat gate valve used for?

A flat gate valve (also called flat plate or slab gate valve) is used for on/off isolation in pipelines where smooth, full‑bore passage and low pressure drop are required. It is commonly applied in oil & gas, gas transmission, city gas, tank farms, and general industrial pipelines.

2. What are the main advantages of a flat gate valve?

Its main advantages include full‑bore straight‑through flow, extremely low pressure loss, bidirectional sealing, easy pigging/cleaning, compact body, and safe cavity‑pressure relief when closed. These properties make it widely used in gas and process lines that require low‑resistance shut‑off.

3. What is the difference between a flat gate valve and a standard gate valve?

A flat gate valve uses a parallel or slab‑type gate that moves straight in the seat, creating a flat sealing surface. A standard gate often uses a wedge‑type gate, with higher seating load, more torque, and slightly higher pressure drop. Flat gate valves are preferred where full‑bore flow, low torque, and pigging capability are important.

4. What pressure and size ranges are typical for flat gate valves?

Typical pressure ratings range from PN2.5 up to PN250 / Class 150–600, depending on the design. Size ranges often cover DN50–DN1200 (2″–48″), with single‑gate and double‑gate versions available for different applications.

5. What standards apply to flat gate valves?

Flat gate valves are commonly designed to API 6D, ASME B16.34, ASME B16.10, ASME B16.5, and API/EN test standards such as API 598. These ensure full‑bore operation, low‑torque sealing, and suitability for pipeline and gas service.

6. Do you export to Latin America?

Yes, we actively export to Mexico, Venezuela, Colombia, and other Latin American markets.

get a quote