Overview
The Smith-Cooper 1728155/56 is a heavy-duty brass ball valve engineered for demanding industrial and plumbing applications. This 1-1/2″ full-port unit combines forged brass construction with proven PTFE sealing technology, delivering reliable on/off control for water, oil, gas, and compressed air systems. The manual lever handle provides intuitive, precise flow control with minimal actuation force.
Key Features
- Full-port design for maximum flow capacity and minimal pressure drop
- Forged brass body with integral seats—superior durability and corrosion resistance
- PTFE seat and seal materials compatible with water, oils, and most gases
- Manual lever handle for simple, reliable on/off operation
- NPT threaded ports for standard pipe and fitting connections
- Compact, space-saving inline design
Technical Specifications
- Nominal Size: 1-1/2″
- Port Type: NPT (National Pipe Thread)
- Water Working Pressure (WOG): 600 psi
- Water Service Pressure (WSP): 150 psi
- Body Material: Forged brass
- Seats & Seals: PTFE (polytetrafluoroethylene)
- Handle Type: Manual lever
- Flow Control: Full-port, bidirectional
- Series: 8155
Typical Applications
The Smith-Cooper 1728155/56 is specified for:
- Water distribution and plumbing systems
- Compressed air lines and pneumatic control
- Industrial hydraulic circuits and oil transfer
- Natural gas and LP-gas service (where applicable)
- HVAC heating and chilled water loops
- General industrial shut-off and isolation duties
Compatibility & Replacements
Compatible With
- Standard 1-1/2″ NPT (National Pipe Thread) ports and fittings
- Pipe diameters from Schedule 40 to Schedule 80
- Water, air, oil, and gas service applications rated up to 600 psi WOG
- Inline or cavity-mount installations
Replaces / Drop-In Replacement For
- Smith-Cooper Series 8155 full-port valves (1-1/2″ NPT)
- Other 1-1/2″ brass ball valves in the same pressure/size class
Works With
- Standard NPT thread adapters and reducers
- Manual or automatic actuation (solenoid/pneumatic kits available separately)
- Pipe sealant tape (PTFE/Teflon) and thread-locking compounds
- Low-pressure and high-pressure manifold systems
