Introduction
Our electric UPVC ball valve series has been upgraded to include three larger sizes: 1-1/4", 1-1/2", and 2". These larger valves feature a unique US standard socket end & double union connection—enabling exceptional ease of installation and maintenance with a simple solvent cement bond, unlike threaded NPT or G connections. For other connection standards, please contact our customer service.
These valves feature a 5-wire configuration integrating 2-wire reverse polarity control and 3-wire signal feedback functions. Reversing the power supply polarity switches the valve between open and closed states, while the feedback wires provide open/closed position signaling to your control system. Unlike the 2-wire auto-return model, this version does not automatically reset if power is lost. A manual override is also included for use during power outages. All valves have EPDM seals for reliable performance.
Applications
Features
- Union & Socket End: Different from standard NPT/G threaded connections, it uses socket-gluing for sealing and integrates threaded structures, balancing connection stability with quick disassembly and maintenance needs.
- Manual Function: Comes with a hex wrench as standard; allows manual valve opening and closing during power outages. "O"=Open, "S"=Close.
- Indicator Window: Built-in engraved marks directly show the valve's open/closed status. External arrow pointing to "0" means fully closed; pointing to "90" means fully open.
- Premium Material: Valve body made of UPVC with EPDM seals, meeting general operating requirements.
- 5-Wire Reverse Polarity with Signal Feedback: Combines two wires for reverse polarity control with three wires for signal feedback. Reversing the power supply polarity switches the valve between open and closed states, while the feedback wires provide open/closed position signaling.
User Manual
To learn how to use this product, please refer to the user manual.
Technical Data
| Port Size | 1 1/4" | Model | USS-MSV488 |
| Port | 2 Way | Thread | No Thread |
| Connection | Union & Socket End | Max Power | 15W |
| Socket Inside Diameter | 42.2mm (US Standard) | With Hex Wrench | Yes |
| Wiring | 5-Wire (2-Wire Reverse Polarity + Signal Feedback) | Manual Function | Yes |
| Signal feedback function | Yes | Indicator Window | Yes |
| Body Material | UPVC | Normal Position | No NO/NC distinction |
| Seal Material | EPDM | Temp Range (Medium) | 33.8℉ to 104℉ |
| Working Voltage | DC 24V | Close/Open Time | 10-12s |
| Max Torque | 20 N·m | Max. Pressure | 232 psi |
| Life Expectancy | 20,000 Cycles | IP Rating | IP65 |
| Package Size | 9.1"x7.1"x4.7" | Gross Weight | 3.31 lb |
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5-Wire (2-Wire Reverse Polarity + Signal Feedback)
This model uses a 5-wire wiring method that combines 2-wire reverse polarity control with 3-wire signal feedback. Reversing the power supply polarity switches the valve between open and closed states, while the feedback wires provide open/closed position signaling.
- Connect both the reverse-polarity control wires and signal feedback wires according to the wiring diagram.
- Wire Color Coding: BK (Black), RD (Red), YW (Yellow), WT (White), BU (Blue), GN (Green), and OG (Orange).
- The valve remains in its current position if power is lost.
- Before manual operation, always disconnect power first.
FAQ
Problem 1: What is unique about the connection method of this ball valve?
The larger sizes of our ball valve series (1-1/4", 1-1/2", and 2") come standard with Socket End ports for solvent cement bonding and a Union structure for easier installation and maintenance, instead of common threaded connections such as NPT or G.
This union design allows the valve body to be installed or removed more easily for maintenance or replacement, without cutting the pipe or rotating the valve body itself.
The pipe sockets are made to a US standard. Please note that the Socket Inside Diameter (I.D.) may vary by national standard even for the same nominal size, such as 1-1/4". For other connection standards, including British Standard, Japanese Industrial Standard, or others, please contact our customer service team.
Problem 2: What precautions apply to auto-return models?
The auto-return ball valve requires a minimum power-on duration of 60 seconds (≥60s). This step is mandatory during first commissioning or after a prolonged power cut to ensure reliable auto-reset performance. Before using the manual override, always disconnect the power first. For auto-return models, please wait for a short period after power is disconnected before manual operation, as the actuator needs time to discharge; otherwise, the valve may be difficult to turn manually.
Problem 3: Does this model come with a manual function?
Yes. The manual override function allows you to control the opening and closing of the valve during a power outage. A hexagonal wrench is included with the valve for this purpose.
Problem 4: What should be noted during manual operation?
Power must be disconnected before manual operation. Turn the valve according to the "O" and "S" indicators: "O" = Open, "S" = Close. The valve should be turned fully open or fully closed; do not leave it in a middle position, as this may damage the valve. For auto-return models, wait for a short period after disconnecting power before manual operation.
Problem 5: How to read the indicator window?
The external arrow shows the valve position. When the arrow points to "0", the valve is fully closed; when it points to "90", the valve is fully open.
Problem 6: What is a Union connection?
A Union connection is a detachable valve structure that allows the valve body to be removed more easily for maintenance or replacement without cutting the pipe. On this product, the pipe connection ends are Socket End ports designed for solvent cement bonding.
Problem 7: What should be noted about the four main control methods?
Please pay attention to the wiring type when purchasing. Only auto-return models will automatically return to the closed position when power is lost. Other control methods do not automatically reset after power loss and will remain in their current position.