Bray DM7000/DM8000 (including M7000) are direct-mount, three-piece, full-port ball valves available in sizes NPS ½ to 2, with a maximum allowable operating pressure of 1000 WOG and an operating temperature range of -46°C to 287°C. Valve bodies are available in CF8M stainless steel, WCB carbon steel, or special alloys, with threaded, welded, and ASME Class 150 flanged connections. They are suitable for process pipeline valve positions requiring fugitive-emissions monitoring, V-ball flow control, or in-line actuator maintenance.
DM7000/DM8000 Series three-piece ball valve product image
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Bray DM7000/DM8000 Three-Piece Ball Valves (Direct Mount)
Three-piece ball valves for industrial flow control, with optional V-port ball internals.
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Model confirmation
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After-sales support
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Specifications
- Size Range
- NPS ½ to 2 / DN 15 to DN 50
- Body Material
- CF8M stainless steel, WCB carbon steel, special alloys
- Operating Temperature Range
- -50°F to 550°F (-46°C to 287°C)
- Stem Material
- 316 stainless steel
- Maximum Allowable Operating Pressure
- 1000 WOG
- Seat Material
- UHMWPE, RPTFE/TFM, 50/50 SS-filled TFE, Tek-Fil®
- Ball Material
- CF8M stainless steel
- Body Type
- Three-piece
- Design Standard
- MSS SP110
- End Connections
- Threaded (ASME B1.20.1 NPT), socket weld (ASME B16.11), extended socket weld, butt weld (MSS SP-72, ASME B16.25), extended butt weld, ASME Class 150 flanged
- Test Standard
- API 598, MSS SP72
- Port
- Full port
Application scenarios
Valve Locations in Enclosed Process Pipelines with Fugitive Emissions Monitoring
Suitable for process pipeline valve locations requiring fugitive emissions monitoring, leak detection, or emissions diversion. The integrated 1/8 in. NPT side port at the mounting location can be used for related monitoring, positive-pressure sealing, and emergency sealant injection.
Process Flow Control Valve Locations with V-Port Ball Trim
Suitable for industrial process valve locations requiring flow control. This series is available with V-port ball control valve trim and features an integrated direct-mount flange to reduce hysteresis between the ball and actuator.
Process Pipeline Valve Assemblies Requiring In-Line Actuator Maintenance
Suitable for process pipeline installations where actuators require maintenance, replacement, or servicing. The three-piece design supports in-line maintenance and allows removal of the actuation equipment at full pipeline pressure, minimizing the impact of maintenance on continuous operation.
Selection points
Integrated Cast Direct-Mount Flange
The integrated cast direct-mount flange reduces installation connection components and overall envelope dimensions while minimizing transmission lag between the ball and actuator.
Removable Actuation Equipment Under Full Line Pressure
This series allows the actuation equipment to be removed while the valve is under full line pressure, facilitating actuator maintenance or replacement.
Belleville Washer Live-Loaded Self-Adjusting Packing
The stem packing uses a Belleville washer positively preloaded, self-adjusting live-loaded design to compensate for environmental changes and packing wear, and is suitable for positive-pressure as well as low-pressure or vacuum sealing conditions.
Multiple Seat Materials Available
Seat materials including UHMWPE, RPTFE/TFM, 50/50 stainless steel-filled TFE, and Tek-Fil are available for configuration according to the process medium and sealing conditions.
Multiple End Connection Options
End connections including NPT threaded, socket weld, butt weld, and ASME 150-class flanged configurations are available to match different process piping interfaces.
Installation & maintenance notes
Verify Actuator Mounting Interface
Before installation, verify that the actuator mounting interface matches the direct-mount interface of the DM7000/DM8000 three-piece ball valve to ensure proper valve actuation.
Verify Process Temperature and Pressure Conditions
Before commissioning, verify that the process medium temperature and pressure at the site do not exceed the specified range for this valve series, and confirm that the selected seat material is suitable for the actual operating conditions.
FAQ
What is the operating principle of DM7000/DM8000 Series three-piece ball valves?
The DM7000/DM8000 Series uses elastomeric sealing and provides positive stem preload through self-adjusting live-loaded packing and Belleville washers, ensuring bubble-tight sealing, leak-free operation, and long service life under varying temperature, humidity, and wear conditions.
Which key configurations should be considered when selecting valves in this series?
Confirm the valve body size range (NPS ½–2 / DN 15–DN 50), end connection type (threaded, socket weld, flanged, etc.), seat and ball materials, and whether a configuration with extended side ports is required for discharge monitoring or leak detection.
Do DM7000/DM8000 valves support in-line maintenance?
Yes. The design permits in-line maintenance, and actuation equipment can be safely removed at full line pressure for convenient servicing.
What are the applicable temperature and pressure ranges for these valves?
The temperature range is -50°F to 550°F (-46°C to 287°C), and the maximum allowable operating pressure is 1000 WOG.
What seat and sealing materials are available, and how do they affect selection?
Available seat materials include UHMWPE, RPTFE/TFM, 50/50 SS-filled TFE, and Tek-Fil; resilient seats and different material combinations affect sealing performance and service life under different media and temperatures. The specific configuration should be confirmed based on the actual medium and operating conditions.
Documents
Product Brochure - Direct-Mount Three-Piece Full-Port Ball Valve Series DM7000/DM8000Product information · EnglishIOM Manual - Three-Piece Full-Port Ball Valve 7000/8000 SeriesManual · EnglishTechnical Bulletin - Ball Valve Selection Guide: V-Port ControlProduct information · EnglishTechnical Bulletin - Ball Valve Actuator Selection GuideProduct information · EnglishTechnical Bulletin - Ball Valve Seat Material Tek-Fil®Product information · EnglishTechnical Bulletin - Ball Valves for Chlorine ApplicationsProduct information · English