**Installation, Operation, and Maintenance Instructions for American Standard Ball Valve**
1. Remove the protective caps on both sides of the flange and thoroughly rinse the valve with the ball fully open using clean water or an appropriate cleaning medium to ensure no debris remains.
2. Before installation, perform a system test using the designated signal (electric or pneumatic) to verify proper operation and prevent potential issues caused by vibration during transportation. Only install the valve on-line after passing the test, ensuring wiring is done according to the electric actuator’s circuit diagram.
3. Prior to connecting the valve to the pipeline, flush the pipe to remove any remaining impurities that could damage the valve seat or ball.
4. During installation, never use the actuator as a lifting point. This can cause damage to the actuator and its accessories.
5. Install the American standard ball valve either horizontally or vertically, depending on the piping layout and operational requirements.
6. Ensure that the pipe near the installation area is properly supported and free from sagging or external forces. Use pipe supports if necessary to maintain alignment.
7. After connecting the valve to the pipeline, tighten the flange bolts in a cross-lock pattern using the specified torque value to ensure a secure and leak-free connection.
**Operation and Usage:**
1. Before operating the valve, confirm that both the tubing and the valve have been flushed to remove any foreign particles.
2. The valve is operated via the input signal to the actuator. A 90° rotation of the valve stem will either open or close the valve. Rotating it forward 90° closes the valve, while rotating it backward 90° opens it.
3. When the actuator's direction indicator arrow is parallel to the pipeline, the valve is open. When the arrow is perpendicular to the pipeline, the valve is closed.
**Maintenance:**
To ensure long service life and minimal maintenance, the valve must be used under normal conditions, with balanced temperature and pressure, and in environments where corrosion is controlled.
- Always ensure the valve is fully open before performing any maintenance, and release all internal pressure.
- Disconnect the power or air supply before starting any repair work.
- Disconnect the actuator from the bracket before beginning disassembly.
- Check that pressure on both sides of the valve has been released before disassembling.
- Handle all parts carefully to avoid damaging sealing surfaces, especially non-metallic components.
- Use special tools when removing O-rings to avoid damage.
- When reassembling, tighten flange bolts symmetrically and evenly in steps.
- Use cleaning agents compatible with all materials in the valve, including rubber, plastic, and metal. For gas applications, gasoline (GB484-89) may be used for metal parts, while non-metallic parts should be cleaned with pure water or alcohol.
- Clean parts by immersion, but avoid prolonged soaking. Dry thoroughly with a clean cloth before assembly.
- New parts must be cleaned before installation.
- Apply a thin layer of compatible grease to sealing grooves, seals, and friction surfaces.
- Avoid introducing any foreign materials, such as dust, fibers, or excess grease, during assembly.
- If leakage occurs due to packing wear, retighten the stem nut by 1/4 to 1 full turn. Do not over-tighten.
**Replacement of Valve Seat and Seal:**
1. Open the valve halfway and flush out any hazardous substances inside and outside the valve body.
2. Close the valve, remove the flange bolts and nuts, and take the valve out of the pipeline.
3. Disassemble the actuator, bracket, lock washer, stem nut, butterfly shrapnel, wear plate, and stem packing in sequence.
4. Remove the bonnet by loosening its attachment bolts and nuts. Discard the old gasket.
5. Ensure the ball is in the "off" position and remove it from the valve body. Then remove the valve seat.
6. Push the stem downward through the valve body hole to remove it completely. Also remove the O-ring and under-stem packing.
7. Be careful not to scratch the stem surface or the packing gland seal during removal.
**Reassembly and Inspection:**
- Replace the valve seat and gaskets with new ones from a spare parts kit.
- Reassemble in the reverse order of disassembly.
- Tighten the flange bolts with the specified torque in a cross pattern.
- Secure the stem nut with the correct torque.
- After installing the actuator, test the valve by applying the corresponding signal to rotate the stem and check opening and closing functions.
- Perform a pressure and performance test if possible, following relevant standards, before returning the system to service.
**Principle of Operation:**
The ball valve operates by rotating a spherical disc (the ball) around the centerline of the valve body. This rotation allows the valve to open or close, providing a tight seal when closed.
**Applications:**
This type of valve is suitable for low-pressure, small-diameter pipelines where quick shut-off or flow diversion is required. It is commonly used in systems where rapid operation and reliable sealing are essential.
Aluminum external opening door refers to a door that opens outward with aluminum alloy as the main material, and has the following characteristics:
Advantages:
Light weight: The density of aluminum alloy material is relatively low, which makes the overall weight of aluminum external opening door lighter, which is more convenient and labor-saving for both installation and daily use. During the handling and installation process, the physical requirements for construction workers are relatively low, and the load-bearing pressure on the building structure is also reduced.
High strength: After reasonable processing and treatment, aluminum alloy has high strength and can withstand large external forces. Therefore, aluminum external opening doors are sturdy and durable, not easy to deform, can maintain good use status for a long time, and are suitable for various different use environments.
Corrosion resistance: Aluminum alloy has good corrosion resistance. In outdoor environments, it can resist the erosion of natural factors such as rain, sunlight, wind and sand, is not easy to rust or fade, and has a long service life. Even in harsh environments such as humidity, acid and alkali, it can maintain good performance.
Good sealing: High-quality aluminum external opening doors are usually equipped with sealing devices such as sealing strips, which can effectively prevent outdoor dust, rain, noise, etc. from entering the room, improving the comfort and quietness of the room.
Beautiful appearance: Aluminum alloy can be subjected to a variety of surface treatments, such as anodizing, electrophoretic coating, powder coating, etc., which can present different colors and textures to meet the aesthetic needs of different consumers. At the same time, the design styles of aluminum exterior doors are diverse, which can match various architectural styles and enhance the overall aesthetics of the building.
Good energy saving: Some high-end aluminum exterior doors use broken bridge insulation technology, which can effectively prevent the transfer of heat, improve the thermal insulation performance of doors and windows, reduce energy consumption, and save energy costs for users.
External aluminium sliding door,aluminum glass door,aluminium and glass sliding door
SMIRO DOORS AND WINDOWS CO., LTD , https://www.smirowindows.com