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Vigor Mework Petroleum Equipment Co., Ltd
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API 6A DEMCO Type Mud Gate Valve for Wellhead Mud Line Pipes 2" 3" 4" 5" 6" BW/Flanged/Threaded


VigorPetro's DM Series Gate Valves are compatible with the original Cameron DEMCO valves. We can provide both Minor Repair Kit and Major Repair Kit for repair service.

Designed for dependable, heavy duty performance in abrasive service conditions, our DM gate valves are commonly selected for a number of oilfield applications, including:
• Drilling standpipe manifold • Pump manifold block valves • High pressure mud mixing lines
• High pressure drilling system block valves • Wellheads • Well treating and frac service
• Production manifolds • Production gathering systems • Production flow lines

3INCH DM GATE VALVE BUTT WELD_VigorPetro.jpg3INCH DM GATE VALVE BUTT WELD_VigorPetro.jpgVigorPetro 7500PSI Mud Gate Valves_VigorPrtto.png

HAMMER UNION TYPE DEMCO TYPE GATE VALVES_VigorPetro.pngVigorPetro Major Repair Kits for DM Gate Valves_副本.png

The seats are designed to provide a positive, tight shut off every closing cycle, even after long exposure to abrasion and scor-ing. Twin metal wear inserts, encapsulated in an elastomer, form a cylindrically shaped plug made up of a gate slot and two flowports. Once closed, line pressure forces the gate up against the downstream port seals which are tested up to 7,500 psi. The 4 in. 5000 Working Pressure (WP) thru 5 x 4 in. 7500 WP valve has a transparent stem cover which protects and reveals gate open/close position. Stem packing is self-adjusting on all sizes.


General Application:

• Water, oil, and gas lines
• Wellheads
• Pipelines and manifolds
• Abrasive drilling mud
• Sour gas and crude oil
• Up to 7,500 psi and temperature range of -40°F to 400°F


Standard Trim Includes:

• A-487 or AISI 4130 Alloy Steel Body and Bonnet
• Stainless Steel (SS) Stem and Gate
• Steel Buna-N Seats
• 90 Durometer A Buna-N Seals


• Full Port - 2 in., 3 in., 4 in., 4-1/16 in., and 5-1/8 in.
• Regular Port - 5 x 4 in., 6 x 4 in., and 6 x 5 in.


• Screwed End
• Weld End
• Ring Type Joint (RTJ), Flanged End
• Integral Hammer Union


Any enquiry please contact us by email: or Visit our website: or for more products information. WhatsApp:+86 18280277398

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Office Address: No. 180 Shulong Road, Xindu District, Chengdu City, Sichuan Province, China
Factory Address: Jianhu County, Yancheng City, Jiangsu Province, China
Tel: 0086-18280277398