3/4" Pilot Operated Solenoid Valve N/O
Availability: In Stock
Technical Details
SKU
UBP-20K
Position
Normally Open
Port Size
3/4" NPT Female
Available Voltage
Available Voltage
Body Material
Brass
Components
Stainless Steel
Orifice Size
20 mm
Temp Range
15°F - 175°F
Pressure Range
4.5 to 115 psi
Flow Rate
Cv 7.6 (Approx 59 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
Coil Class
Class H (356° F)
Duty Cycle
100% ED (Continuous)
Weight
2.65 lbs
Height
5.04"
Length
2.95" port to port
Width
2.28"
CAD Files
Available Upon Request
Certification
UL Recognized
Product Overview
The UBP-20K is a 3/4" normally open, pilot-operated brass solenoid valve designed for higher-flow water, air, and compatible low-viscosity liquid applications. Its brass body, stainless steel internal components, and NBR seals provide reliable on/off flow control in industrial utility systems, process piping, and OEM equipment. With a 20 mm orifice, Cv of 7.6, and a flow rate of approximately 59 GPM at 60 psi, this valve is suited to applications that require higher flow capacity and sufficient operating pressure.
This 2-way valve remains open when de-energized and closes when the solenoid coil is energized. Its normally open operation allows flow to continue during a power interruption, making it suitable for systems where maintaining flow without electrical power is important. The pilot-operated design requires a minimum differential pressure of 4.5 psi for reliable operation. It is not suitable for gravity-fed or zero-pressure systems.
The UBP-20K 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 Class H coil and a temperature range of 15°F to 175°F. Suitable media include water, air, and compatible light oils, subject to body and seal material compatibility.
Common Applications
- Compressed air distribution systems
- Boiler feedwater and auxiliary water isolation
- Process-fluid recirculation loops
- Water treatment and filtration equipment
- Cooling tower water control
- Process water distribution
- Industrial water supply and utility lines
- Industrial water recirculation systems
- Fluid-handling systems in OEM machinery
- Skid-mounted process equipment and control systems
- Process utility control in automated production lines
Installation
- Do not use in gravity-fed systems or applications that cannot maintain the required pressure differential.
- The valve can be mounted in either a vertical or horizontal orientation.
- Confirm that the selected coil voltage matches the available power supply.
- Check brass body and NBR seal compatibility with the operating fluid before installation; do not assume compatibility with all chemicals or oils.
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.
