1/2" Pilot Operated Solenoid Valve N/O
Availability: In Stock
Technical Details
SKU
UBP-15K
Position
Normally Open
Port Size
1/2" NPT Female
Available Voltage
Select Above
Components
Stainless Steel
Seal Material
NBR
Orifice Size
13 mm
Temp Range
15°F - 175°F
Pressure Range
4.5 to 115 psi
Flow Rate
Cv 4.5 (Approx 35 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
DIN43650A
Coil Class
Class H (356° F)
Duty Cycle
100% ED (Continuous)
Response Time
Fast Acting (Less than one second)
Weight
1.76 lbs
Length
2.60" port to port
Width
1.89"
Height
4.41"
CAD Files
Available Upon Request
Certification
UL Recognized
Product Overview
The UBP-15K is a 1/2" normally open, pilot-operated solenoid valve designed for high-flow water, air, and compatible low-viscosity liquid applications. Its brass body, stainless steel internal components, and NBR seals provide dependable on/off flow control in industrial utility systems, water distribution lines, and OEM equipment. With a 13 mm orifice, Cv of 4.5, and a flow rate of approximately 35 GPM at 60 psi, this valve offers high flow capacity in applications with sufficient operating pressure.
This 2-way valve remains open when de-energized and closes 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. This makes it unsuitable for gravity-fed systems or applications that cannot maintain the required pressure differential. The normally open configuration is useful in systems where continued flow during a power interruption is required.
The UBP-15K is available with 12V DC, 24V DC, 24V AC, 110V AC, and 220V AC coils. It supports continuous-duty operation within its rated voltage and ambient temperature limits, with a response time of less than one second.
Common Applications
- Industrial water supply and utility water lines
- Industrial water recirculation systems
- 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 control systems
- Automated production lines requiring process utility control
- Utility bypass lines and applications where continued flow during power loss is required
Installation
- The valve can be mounted in either a vertical or horizontal orientation.
- Confirm that the selected coil voltage matches the available power supply.
- Maintain fluid temperature between 15°F and 175°F.
- Check compatibility of the brass body and NBR seals with the operating fluid before installation. The series is designed for compatible water, air, and light oil applications; consult a chemical compatibility expert for other media.
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.
