1" Pilot Operated Solenoid Valve N/O
Availability: In Stock
Technical Details
SKU
UBP-25K
Position
Normally Open
Port Size
1" NPT Female
Available Voltage
Select Above
Body Material
Brass
Seal Material
NBR
Orifice Size
25 mm
Temp Range
15°F - 175°F
Pressure Range
AC: 4.5-115 PSI | DC: 4.5-85 PSI
Flow Rate
Cv 25 (Approx 190 GPM @ 60 PSI)
Power (AC Coils)
110V AC: 22 VA | 220V AC: 23 VA | 24V AC: 21 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)
*Suitable Media
Water - Liquid - Air - Light oil (Viscosity ≤ 20 cst)
Weight
3.31 lbs
Height
5.31"
Length
3.78" port to port
Width
2.72"
CAD Files
Available upon request
Certification
UL Recognized
Product Overview
The UBP-25K 1" Pilot Operated Solenoid Valve is in NBR seal material designed for applications that require fail-open operation, allowing flow to continue when power is removed and closing only when the valve is energized. This brass piloted solenoid valve is also UL Recognized. Certification details are available upon request.
This normally open, piloted valve is commonly used in water and utility systems where uninterrupted flow during a power loss is a functional requirement. Typical applications include utility bypass lines, safety-driven processes, and automated systems where shutdown should occur only on command.
The piloted design allows the valve to handle higher flow rates than direct-acting valves of the same size when sufficient pressure differential is available. The brass valve body provides durability for non-corrosive fluids, while stainless steel internal components support reliable performance in continuous-duty environments. When properly applied, the valve is suitable for water, air, compatible liquids, and light oils commonly found in industrial and commercial systems.
This valve depends on pilot pressure and will not function below 4.5 PSI inlet pressure. Maintain consistent system pressure in high-elevation or low-head installations. Avoid use in gravity-fed systems.
Each valve is supplied as a complete assembly with a mounted solenoid coil, available in multiple voltage options to match standard industrial power requirements. The standard DIN electrical connection and compact footprint make integration straightforward for both new installations and retrofit projects.
The UBP-25K is frequently selected for larger-line control and pilot applications where fail-open behavior is required without sacrificing flow capacity or operational reliability.
Why UL Recognition Matters
UL Recognition indicates that the electrical components have been independently evaluated for defined safety parameters such as insulation integrity and thermal limits. This minimizes electrical risk and supports reliable operation in PLC-driven and industrial control environments.
Always follow proper installation practices and confirm material compatibility with your fluid, pressure, and temperature requirements.
