1-1/2" Pilot Operated Solenoid Valve
Availability: In Stock
Technical Details
SKU
UBP-40
Position
Normally Closed
Port Size
1-1/2" NPT Female
Available Voltage
Select Above
Body Material
Brass
Components
Stainless Steel
Seal Material
NBR
Orifice Size
40 mm
Temp Range
15°F - 175°F
Pressure Range
4.5 to 230 psi
Flow Rate
Cv 40 (Approx 310 GPM @ 60 PSI)
Power (AC Coils)
110V AC: 22 VA | 220V AC: 23 VA | 24V AC: 22 VA
Power (DC Coils)
12V DC: 18 W | 24V DC: 18 W
Coil Connection
DIN 43650A
Duty Cycle
100% ED (Continuous)
Response Time
Fast Acting (Less than one second)
*Suitable Media
Water - Liquid - Air - Light oil (Viscosity ≤ 20 cst)
Length
5.16" port to port
Width
3.78"
Height
5.91"
Weight
5.84 lbs
CAD Files
Available Upon Request
Certification
UL Recognized
Product Overview
The UBP-40 is a 1-1/2" normally closed, pilot-operated solenoid valve designed for high-flow water, air, and compatible liquid applications. Its brass body, stainless steel internal components, and NBR seals provide dependable on/off flow control in industrial utility systems, process piping, and OEM equipment. With a 40 mm orifice, Cv of 40, and a flow rate of approximately 310 GPM at 60 psi, this valve is suited to systems that require higher flow capacity and have sufficient operating pressure.
This two-way valve remains closed when de-energized and opens when the solenoid coil is energized. Its pilot-operated design uses system pressure to assist operation and requires a minimum differential pressure of 4.5 psi. It is not suitable for gravity-fed systems or applications that cannot maintain the required pressure.
The UBP-40 is available with 24V AC, 110V AC, 220V AC, 12V DC, and 24V DC coils. It supports continuous-duty operation within its rated voltage and ambient temperature limits, with a fast response time of less than one second.
Common Applications
- Industrial water supply and utility water lines
- Process water distribution and recirculation loops
- Water treatment and filtration equipment
- Cooling tower water control
- Compressed air distribution systems
- Boiler feedwater and auxiliary water isolation
- Fluid-handling systems in OEM machinery
- Skid-mounted process equipment and automated control systems
- Industrial water recirculation and process utility control
Installation
- Do not use in gravity-fed systems or low-head applications that cannot maintain the required pressure.
- The valve can be mounted in either a vertical or horizontal orientation.
- Confirm that the selected coil voltage matches the available power supply.
- Check NBR seal and brass body compatibility with the operating fluid before installation.
- Keep the operating fluid within the specified temperature range of 15°F to 175°F.
Why UL Recognition Matters
UL Recognition confirms that the electrical components have been tested to meet UL safety benchmarks. This supports smoother inspection processes and improves acceptance in regulated installations.
*Always follow proper installation practices and confirm material compatibility with your fluid, pressure, and temperature requirements.
