Overview
The Marwin 3000R WCB 316 PTFL is a fire-safe, three-piece ball valve engineered for demanding industrial and chemical applications. This model features a ASTM A351 Grade CF8M (316 stainless steel) body with PTFE soft-seat seals, making it suitable for a wide range of pressure and temperature conditions. The 3000R series delivers full-port or reduced-port flow options with NPT female threaded end connections, achieving reliable, Class VI shutoff performance in both liquid and gas service.
Key Features
- Fire-safe design compliant with API 6FA and other industry standards
- Three-piece body construction for field maintenance and seat replacement
- 316 stainless steel (CF8M) body with corrosion-resistant materials
- PTFE (Polytetrafluoroethylene) seat material for chemical compatibility
- NPT female threaded connections for easy pipe integration
- Compact, economical design suitable for general industrial and process applications
Technical Specifications
- Manufacturer: Marwin Valve (Richards Industries)
- Series: 3000R
- Body Material: ASTM A351 Gr. CF8M (316 Stainless Steel)
- Seat Material: PTFE (PTFL designation)
- Pressure Rating: 700 WOG (Working Operating Gauge Pressure)
- End Connections: NPT Female Threaded (FNPT)
- Port Type: Full or reduced port (verify model revision)
- Temperature Range: Standard applications per Marwin specifications (consult technical datasheet for PTFE seat limits)
- Standards Compliance: API 6FA fire-safe, ANSI Class VI shutoff
Typical Applications
The Marwin 3000R is widely used in:
- Chemical processing and storage systems
- Oil and gas upstream and downstream operations
- Refinery and petrochemical plants
- Hydraulic and pneumatic systems requiring high-pressure isolation
- General industrial fluid and gas shut-off service
- High-pressure pump discharge and bypass lines
- Instrumentation isolation and block-and-bleed applications
Compatibility & Replacements
Compatible With
- NPT-threaded piping systems (1/4″ to 4″ nominal size range)
- Industrial and commercial process control systems
- Manual lever operation or automated actuator mounting (ER and UT series compatible per Marwin specification)
- Chemical and hydrocarbon fluid service applications
- Systems requiring fire-safe or ANSI Class VI shutoff performance
Replaces / Drop-In Replacement For
Marwin 3000R valves are direct replacements for earlier 3000R PTFE-seated models with matching body material, NPT connection type, and WOG rating. Verify exact port size (1/2″, 3/4″, 1″, 1-1/2″, 2″, 2-1/2″, 3″, or 4″) and actuator compatibility before ordering. For specific model interchange, consult the Marwin valve cross-reference documentation or contact the manufacturer directly.
Works With
- Marwin ER (electric rotary) and UT (pneumatic) actuators for automated operation
- Manual lever handles for manual operation
- Standard NPT male-threaded fittings and adapters
- API 6FA compliant automation systems and process control networks
- PTFE-compatible fluids including hydrocarbons, water, glycols, and most aqueous solutions
