Overview
The Smith-Cooper 1728155/56 is a 1-1/4″ NPT full-port ball valve engineered for industrial hydraulics, pneumatics, plumbing, and general process applications. Built with a forged brass body and rated at 600 WOG (water, oil, gas) and 150 WSP (working steam pressure), this manual ball valve delivers reliable shutoff and isolation with reduced friction and maximum flow efficiency. The valve features a chrome-plated ball, PTFE seats, and a zinc-plated steel lever handle for easy manual operation.
Key Features
- Full-port design for maximum flow with minimal pressure drop
- Forged brass body provides corrosion resistance and durability
- Chrome-plated ball and PTFE/RTFE seats reduce leakage risk
- 600 psi WOG / 150 psi WSP pressure ratings for water, oil, and gas service
- NPT (National Pipe Taper) female threads on both ends for secure connections
- Blow-out proof stem design for operator safety
- ISO 9001:2008 manufactured; CSA approved
Technical Specifications
- Series: 1728155/56 (8155 Series)
- Valve Size: 1-1/4″ NPT
- Body Material: Forged brass
- Ball Material: Chrome-plated brass
- Seat Material: PTFE/RTFE
- Port Type: Full port
- Pressure Rating WOG: 600 psi
- Pressure Rating WSP: 150 psi
- Connection Type: NPT female threads (both ends)
- Handle Type: Manual zinc-plated steel lever
- Certifications: ISO 9001:2008, CSA approved, NSF/ANSI 61 compliant
Typical Applications
This Smith-Cooper ball valve is ideal for plumbing systems, industrial hydraulic circuits, pneumatic lines, and general-purpose water, oil, and gas isolation service. The full-port design and low-friction construction make it suitable for applications requiring reliable manual shutoff without significant pressure drop. Common uses include equipment shutoff, system isolation, and maintenance operations in commercial and industrial facilities.
Compatibility & Replacements
Compatible With
- Standard 1-1/4″ NPT male threaded pipe and fittings
- Hydraulic and pneumatic systems rated for 600 WOG
- Water distribution and plumbing networks
- Industrial process piping for gases and light oils
- Systems requiring manual isolation and shutoff control
Replaces / Drop-In Replacement For
- Smith-Cooper series 1728155 (8155) variants in 1-1/4″ size
- Other OEM brass ball valves in 1-1/4″ NPT with equivalent 600 WOG/150 WSP ratings
- Verify compatibility with your system integrator before ordering for critical applications
Works With
- Standard NPT male-thread pipe and fittings (all materials)
- Brass, copper, plastic, aluminum, and welded steel piping systems
- Manual valve actuation systems
- ISO 4401 / CETOP 05 sandwich and cavity mounting blocks (via adapters)
