Overview
The Worcester 3/4 4444TSE is a Series 44 three-piece ball valve from Flowserve Worcester Controls, engineered for durable service across a wide range of industrial fluid handling applications. This 3/4-inch carbon steel body valve combines proven design principles with ANSI B16.34 compliance and features stainless steel trim and TFE (Teflon) seats for reliable shut-off and extended service life.
Key Features
- Three-piece modular construction — Slip-out body design allows fast, inexpensive maintenance with easy access to seats and seals
- Bubble-tight shut-off — Bi-directional flow with low operating torques for manual or actuator operation
- Advanced seal technology — Live-loaded PEEK and Polyfill thrust bearings extend cycle life and improve performance under pressure cycling
- ANSI B16.34 compliant — Meets stringent specifications for design, materials, testing, and complete traceability
- Stainless steel nameplate — Valve identification per MSS SP-25 for full pressure-vessel documentation and certification support
Technical Specifications
| Port Size | 3/4″ NPT (Threaded) |
| Body Material | Carbon Steel (CS) |
| Trim Material | Stainless Steel (SS) |
| Seat Material | TFE (Teflon) |
| Pressure Rating | 1000 PSI WOG (Working Operating Gauge Pressure) |
| Maximum Operating Temperature | 400°F (at rated pressure with TFE seats) |
| Valve Type | 3-Piece Ball Valve |
| Standards Compliance | ANSI B16.34, ASME B16.34, ASTM A-105, ASTM A-216 |
| End Connection Type | NPT (National Pipe Thread) |
| Manufacturer | Flowserve Corporation (Worcester Controls) |
| Part Number | 3/4 4444TSE R2 |
Typical Applications
Worcester Series 44 valves are widely used in:
- General industrial fluid handling and process control systems
- Air, steam, water, and gas applications
- Pressure regulators and manifold systems
- Chemical and petrochemical plants
- HVAC and building automation systems
- Oil and gas production and distribution
Compatibility & Replacements
Compatible With
- NPT (National Pipe Thread) male connections, all schedules of carbon steel, stainless steel, copper, and alloy steel pipe
- Manual lever handles, pneumatic actuators, and electric actuators with standard valve mounting brackets
- Manifold systems and integrated process piping configurations
- ASME and ANSI rated pressure vessel applications
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or maintenance team before ordering. If replacing an existing valve, confirm port size, thread type, pressure rating, and seat material match your application.
Works With
- Standard NPT female threaded connections (all pipe schedules)
- Manual lever handles (standard zinc-plated carbon steel, stainless steel optional)
- Pneumatic and electric valve actuators (mounted on precision machined brackets)
- Flowserve support documentation including CMTRs (Certified Material Test Reports) available upon request
