1" WRAS Approved Normally Open Water Solenoid Valve – 0.35–20 Bar
ASCO Sirai WRAS Approved Normally Open Water Solenoid Valve for Potable Water Applications
1 inch WRAS approved normally open water solenoid valve – ASCO Sirai model L282D01-1.
Designed for potable water systems, commercial water services and industrial water control, this 2/2 way normally open pressure assisted brass solenoid valve combines proven ASCO Sirai reliability with WRAS approved EPDM sealing materials. Operating in a fail-safe open configuration (power to close), it is ideal for safety-critical water systems where water flow must be maintained automatically in the event of power failure.
Key Features
✓ WRAS approved for potable water applications
✓ Latest WRAS Approval No. 250702716
✓ 2/2 way normally open operation
✓ Fail-safe open – power to close
✓ Pressure assisted diaphragm design
✓ Low 0.35 Bar minimum operating pressure
✓ 0.35–20 Bar operating pressure
✓ Anti water hammer design
✓ Brass body with stainless steel internals
✓ High-flow 24mm orifice
✓ WRAS approved EPDM seals
✓ Media temperatures up to +130°C
✓ IP65 coil with DIN connector
✓ 100% continuous duty rated
✓ AC and DC voltage options
✓ Free next working day UK delivery
Typical Applications
Potable water systems
Priority demand systems
Safety shut-off systems
Water treatment equipment
Commercial water installations
Industrial process water
OEM machinery
Applications requiring fail-safe open operation
Technical Specification
Function: 2/2 way normally open (fail-safe open – power to close)
Valve Type: Pressure assisted diaphragm
Port Size: 1" BSPP female (ISO 228)
Orifice: 24mm
Flow Factor (Kv): 12m³/hr
Minimum Pressure Differential: 0.35 Bar
Operating Pressure: 0.35–20 Bar
Maximum Allowable Pressure (PS): 20 Bar
Body Material: Brass
Internal Components: Brass & stainless steel
Core Tube: Stainless steel
Seat Material: Brass
Seal Material: WRAS approved EPDM
Suitable Media: Clean potable water and compatible liquids
Maximum Viscosity: 37 cSt
Media Temperature: -10°C to +130°C
Ambient Temperature: -10°C to +60°C
Performance
Design Feature: Anti water hammer construction
Opening Time: Approximately 300ms–1500ms
Closing Time: Approximately 1000ms–2000ms
Continuous Duty: ED100%
Protection Rating: IP65 with DIN connector fitted
Electrical Connection: DIN 46340 3-pin connector (EN175301-803)
Coil Specification
Power Consumption
DC: 5.5 Watts
AC: 11.7VA inrush / 10VA holding
Voltage Options
DC
12VDC
24VDC
AC
24VAC
110VAC
230VAC
(Other voltages available on request.)
WRAS Approval
This valve is fitted with WRAS approved EPDM sealing materials and forms part of WRAS Approval Certificate No. 250702716 for use with products complying with the Water Supply (Water Fittings) Regulations across England, Scotland, Wales and Northern Ireland. Approval valid until 31 July 2030.
Why Choose This Valve?
This 1" WRAS valve L282 Series provides the highest flow capacity in the standard screwed range, combining a large 24mm orifice with a Kv of 12m³/hr for demanding commercial water services and industrial process applications. It is an excellent choice where dependable fail-safe open operation and high flow performance are required without moving to the larger L282D-BIG Series. The anti water hammer design also helps minimise hydraulic shock, improving system reliability and extending valve service life.
