Overview
The Worcester 4446TSER2 is a 1″ three-piece ball valve manufactured by Flowserve, a global leader in industrial flow control products. This valve features a carbon steel A105 body paired with 316 stainless steel ball and stem for superior corrosion resistance and durability in demanding industrial applications. With TFE (Teflon) seats and seals, the 4446TSER2 delivers bubble-tight shutoff and reliable performance across a wide temperature and pressure range.
Key Features
- Three-piece design — enables fast, field-replaceable seats and body seals without removing the valve from the line
- 1000 PSI WOG (Working Pressure) — suitable for high-pressure industrial piping, chemical processing, and energy applications
- Stainless steel ball and stem — inherent corrosion and galling resistance
- TFE seat material — handles a broad range of industrial fluids and maintains low operating torque
- NPT threaded end connections — drop-in replacement for standard 1″ industrial ball valves
- Quarter-turn lever operation — intuitive, low-torque control with clear flow indication
Technical Specifications
- Valve Size: 1″ NPT
- Body Material: A105 Carbon Steel
- Ball & Stem: 316 Stainless Steel
- Seat Material: TFE (PTFE/Teflon)
- Pressure Rating: 1000 PSI WOG at 70°F
- Temperature Range: –50°F to +400°F (seat dependent)
- Connection Type: Female NPT (threaded)
- Port Type: Reduced bore
- Design Standard: ANSI B16.34
- End Config: Threaded
Typical Applications
Worcester 4446 series valves are widely used in:
- Petrochemical and refinery processes
- Chemical processing and caustic systems
- Oil and gas production and transmission
- Power generation and steam systems
- HVAC and building systems requiring manual isolation
- Industrial water and fluid handling
- Instrument and sampling lines
Compatibility & Replacements
Compatible With
- Standard 1″ NPT female piping threads (IPS, Schedule 40/80)
- Industrial isolation and on-off control systems
- Manual lever-operated valve assemblies
- Actuators requiring low torque operation
- ANSI B16.34-compliant pressure piping systems
Replaces / Drop-In Replacement For
- Earlier versions and variants of Worcester 4446 series valves
- Standard three-piece industrial ball valves in 1″ NPT configuration
- Verify compatibility with your system integrator before ordering to confirm connection type and pressure requirements.
Works With
- Manual lever handles (standard zinc-plated carbon steel with vinyl coating)
- Pneumatic and hydraulic actuators rated for low-torque quarter-turn service
- Solenoid valve assemblies and control packages
- Instrumentation packages requiring reliable manual isolation
- Field maintenance and replacement seat/seal kits available through Flowserve
