1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the NIBCO T133 3/4 Threaded 150# Non-Rising Stem Bronze Gate Valve. Please read this manual thoroughly before attempting to install or operate the valve to ensure proper function and longevity.
2. Safety Information
Always adhere to local codes and regulations during installation and operation. Failure to follow these guidelines may result in property damage, personal injury, or death.
- Ensure the system is depressurized and drained before installation or maintenance.
- Wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
- Do not exceed the specified pressure and temperature ratings for the valve.
- Handle the valve with care to prevent damage to threads or internal components.
- Verify proper sealing and connections to prevent leaks.
3. Product Overview
Key Features
- 150 psi/10.3 bar saturated steam to 366°F/185°C
- 300 psi/20.7 bar non-shock cold working pressure
- Non-rising stem design for space-saving applications
- Solid wedge for reliable shutoff
- Screw-in bonnet for infrequent maintenance requirements
- Female threaded ends for ease of installation
- Bronze construction for durability
Components
The NIBCO T133 gate valve consists of a bronze body, a non-rising stem, a solid wedge, a screw-in bonnet, and a handwheel for operation. The threaded ends allow for secure connection to piping systems.
Image showing the NIBCO T133 bronze gate valve with a blue handwheel, threaded ends, and a non-rising stem design.
4. Setup and Installation
Follow these steps for proper installation of the NIBCO T133 gate valve:
- Prepare Piping: Ensure piping is clean, free of debris, and properly aligned. Cut pipe ends squarely.
- Apply Thread Sealant: Apply an appropriate thread sealant (e.g., PTFE tape or pipe dope) to the male pipe threads. Do not apply sealant to the valve's internal threads.
- Thread Valve: Hand-tighten the valve onto the pipe. Use a pipe wrench on the hex flats of the valve body to tighten, ensuring not to overtighten or apply torque to the handwheel or bonnet.
- Support: Provide adequate support for the piping system to prevent strain on the valve.
- Test: After installation, slowly pressurize the system and check for leaks at all connections.
5. Operating Instructions
The NIBCO T133 gate valve is designed for on/off service. It is not intended for throttling or flow regulation.
- To Open: Turn the blue handwheel counter-clockwise until it stops. The non-rising stem will remain in place while the internal wedge lifts to allow full flow.
- To Close: Turn the blue handwheel clockwise until it stops. The internal wedge will lower to completely block flow. Do not overtighten.
6. Maintenance
The NIBCO T133 gate valve with its screw-in bonnet is designed for infrequent maintenance. Regular inspection is recommended to ensure optimal performance.
- Routine Inspection: Periodically check for any signs of external leakage around the bonnet or threaded connections.
- Operation Check: Cycle the valve (open and close) occasionally to ensure smooth operation and prevent internal components from seizing.
- Cleaning: Keep the exterior of the valve clean to prevent corrosion and allow for easy inspection.
- Packing Gland: If minor stem leakage occurs, the packing gland nut (located below the handwheel) may be gently tightened. Do not overtighten, as this can impede operation. For significant leakage, professional service may be required.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Leakage at threaded connections | Improper thread sealant application or insufficient tightening. | Depressurize system, reapply thread sealant, and retighten connections. |
| Leakage around stem | Loose packing gland or worn packing. | Gently tighten packing gland nut. If leakage persists, packing may need replacement by a qualified technician. |
| Valve difficult to operate (turn handwheel) | Lack of lubrication, internal debris, or overtightened packing gland. | Loosen packing gland slightly (if overtightened). If problem persists, internal inspection by a professional may be necessary. |
| Valve not fully closing/opening | Internal debris obstructing wedge travel or damaged wedge/seat. | Flush system if possible. If mechanical damage is suspected, valve replacement may be required. |
8. Technical Specifications
| Specification | Detail |
|---|---|
| Product Dimensions | 4.67 x 2.53 x 2.52 inches |
| Item Model Number | T13334 |
| Weight | 7.48 Pounds |
| Manufacturer | NIBCO INC. |
| Country of Origin | USA |
| Material | Bronze |
| Brand | NIBCO |
| Exterior Finish | Bronze |
| Inlet Connection Type | Threaded |
| UPC | 039923617460 |
| Maximum Saturated Steam Pressure | 150 psi (10.3 bar) at 366°F (185°C) |
| Non-Shock Cold Working Pressure (CWP) | 300 psi (20.7 bar) |
9. Warranty and Support
NIBCO products are manufactured to high-quality standards. For information regarding product warranty, technical support, or service, please refer to the official NIBCO website or contact NIBCO customer service directly. Always provide your product model number (T13334) and purchase details when seeking support.
NIBCO Official Website: www.nibco.com
