Key Features
- 1½" WRAS Water Solenoid Valve
- 2/2 Way Normally Closed
- Pressure Assisted Diaphragm
- 0.5–10 Bar Pressure Range
- 45mm Orifice
- Kv 27 m³/h Flow Capacity
- 1½" BSPP Connection
- Latest WRAS Approval No. 250702716
- Potable Water Applications
- Brass Valve Body
- Brass & Stainless Internals
- EPDM Seals
- -10°C to +85°C Media
- Fluids Up To 37 cSt
- 360ms Opening Time
- 650ms Closing Time
- 9W DC Solenoid Coil
- 100% Duty Rated
- IP67 Protection
- 12V or 24V DC Options
- 24–230V AC Options
- Free next working day UK delivery
Datasheets
Description
1½" WRAS Water Solenoid Valve 0.5–10 Bar – ASCO Sirai L182D48
The ASCO Sirai L182D48-11/2 is a 1½" BSP WRAS approved brass solenoid valve designed for high-flow potable water, commercial water services, water treatment and industrial water-control applications.
Part of the larger L182D-BIG Series, this 2/2 way normally closed, pressure-assisted diaphragm valve combines a substantial 45mm orifice with a Kv flow factor of 27 m³/h. Operating from 0.5 to 10 Bar differential pressure, it provides almost twice the flow capacity of the 1¼" model while retaining the same robust industrial valve design.
Valve Function & Operation
Function: 2/2 Way Normally Closed
Operation: Pressure Assisted Diaphragm
Design: Full Orifice Pilot Operated
Minimum Differential Pressure: 0.5 Bar
Maximum Differential Pressure: 10 Bar
Maximum Allowable Pressure (PS): 10 Bar
The pilot-operated diaphragm design uses the pressure differential across the valve to operate the large main diaphragm, allowing a 45mm flow path to be controlled using a relatively compact solenoid operator.
1½" BSPP Connection & High Flow
Port: 1½" BSPP Female
Thread Standard: ISO 228
Orifice: 45mm
Kv Flow Factor: 27 m³/h
The 45mm orifice provides a major increase in flow capacity over the 1¼" version, making the 1½" L182D48 particularly suitable for larger commercial and industrial water installations where pressure loss through the control valve needs to be minimised.
WRAS Approved EPDM Seals
The L182D48 uses EPDM sealing materials and is specified as a WRAS certified solenoid valve.
✓ Latest WRAS Approval No. 250702716
✓ Approval Valid Until 31 July 2030
Body: Brass
Internal Components: Brass & Stainless Steel
Guide Assembly: Stainless Steel
Seat: Brass
Seals: EPDM
Shading Ring: Copper
This combination provides a durable industrial valve construction suitable for demanding potable and process-water installations.
Potable Water Applications
Suitable applications include:
✓ Potable Water Systems
✓ Commercial Water Services
✓ Water Treatment Equipment
✓ Industrial Process Water
✓ Plant Room Installations
✓ Building Services
✓ OEM Machinery
✓ Compatible Liquids
Maximum Media Viscosity: 37 cSt
For liquids other than water, compatibility with the EPDM, brass, stainless steel and other wetted materials should be confirmed before use. The manufacturer specifies the valve for compatible liquid and gaseous media.
Temperature Range
Media Temperature:
-10°C to +85°C
Ambient Temperature:
-10°C to +50°C
Maximum Viscosity:
Approximately 37 cSt
The L182D-BIG therefore provides a wide operating temperature range for commercial and industrial water applications while retaining continuous-duty electrical operation.
Switching Performance
Opening Time: 360ms
Closing Time: 650ms
The controlled response is appropriate for the larger diaphragm and high flow capacity of the 1½" valve.
Solenoid Coil
Coil: ZA10A
DC Power: 9 Watts
AC Power:
23VA Inrush
14VA Holding
Duty Cycle: ED 100% Continuous
Insulation: Class F 155°C
Optional Insulation: Class H 180°C
Encapsulation: Fibreglass Reinforced PPS
Protection: IP67 with Connector
The combination of continuous duty and IP67 protection makes the operator well suited to industrial plant and equipment installations.
Electrical Connection
Connection: DIN 46340 3-Pole
Connector Standard: EN 175301-803
Protection with Connector: IP67
Voltage Options
DC:
✓ 12V DC
✓ 24V DC
AC:
✓ 24V AC
✓ 110V AC
✓ 230V AC
Other voltages and frequencies are available on request.
Installation
The L182D48 may be installed in any mounting position, although installation with the solenoid coil vertically upwards is preferred.
Dimensions & Weight
For the 1½" L182D48:
Overall Length: 140mm
Overall Height: 140mm
Maximum Width: 110mm
Weight: Approximately 2.51kg
The dimensional drawing shows the larger diaphragm housing required for the 45mm flow path while retaining a compact inline configuration.
Serviceable Industrial Design
The L182D-BIG construction allows the main wear components to be replaced rather than requiring complete valve replacement.
Available service components include:
✓ Replacement Core Kit
✓ Replacement Diaphragm Kit
✓ Replacement ZA10A Coil
The 1½" and 2" versions share the same diaphragm kit, simplifying maintenance where several L182D-BIG sizes are installed on the same site.
Typical Applications
✓ Potable Water Systems
✓ High Flow Water Control
✓ Commercial Plant Rooms
✓ Water Treatment Equipment
✓ Industrial Process Water
✓ Building Services
✓ Commercial Water Distribution
✓ Washdown Systems
✓ OEM Machinery
✓ General Water Shut-Off
Why Choose the 1½" L182D48?
The 1½" L182D48 is particularly attractive where high flow capacity is required without moving to a 2" valve and pipe connection.
Its 45mm orifice and Kv 27 m³/h provide a substantial increase over the 1¼" model's Kv 15 m³/h while maintaining the same 0.5–10 Bar operating range.
Combined with WRAS certification, 100% continuous duty, IP67 electrical protection and serviceable construction, it provides a robust solution for larger commercial water, process-water and water-treatment systems.
L182D-BIG Range
1¼" BSP – 30mm Orifice – Kv 15 m³/h
1½" BSP – 45mm Orifice – Kv 27 m³/h
2" BSP – 45mm Orifice – Kv 34 m³/h
All three sizes operate from 0.5 to 10 Bar.
Related Products & Categories
Technical Specification
Brand: Asco / Sirai
Model: L182D48-112
Width: 110.00 mm
Height: 110.00 mm
Depth: 140.00 mm
Weight: 4.80 kg
Valve / Product Type: Solenoid Valve
Body Material: Brass
Voltage: 110vAC, 12vDC, 230VAC, 24vAC, 24vDC
Port Size: 11/2 thread
Function: 2/2 Failsafe Closed
Operation: Pressure Assisted from 0.5 Bar
Pressure: 3 Bar, 3.5 Bar, 4 Bar, 4.5 Bar, 5 Bar, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar, 7.5 Bar, 8 Bar, 8.5 Bar, 9 Bar, 10 Bar
Seals: EPDM
Approvals:: IP65, WRAS
Media: Water
Options required: Anti Water Hammer
Orifice: 45mm
Found in these Categories
- 11/2" WRAS Valves
- 1½ Brass Solenoid Valves
- Water Solenoid Valves
- WRAS Solenoid Valves
- 11/2 Solenoid Valves
- 10 Bar Solenoid Valves
- 2/2 Normally Closed Solenoid Valves
- 2/2 Normally Closed - Pressure Assisted
- WRAS Approved Brass Solenoid Valves
- Brass Solenoid Valves by Port Size
- 11/2" BSP General Solenoid Valves
- General Purpose Solenoid Valves
- Large (11/4" - 3")
- WRAS Brass Solenoid Valves
- WRAS Water Solenoid Valves
- WRAS Solenoid Valves
- WRAS Brass Solenoid Valves
- WRAS Brass Solenoid Valves - Normally Closed
- WRAS Brass Solenoid Valves - 2/2 Normally Closed
- Brass Solenoid Valves
- WRAS Approved Solenoid Valves
- WRAS Approved Valves
1½" WRAS Water Solenoid Valve N/Closed – ASCO Sirai L182D48
£262.78 incl. VAT £218.98 ex. VAT
-67% Was £787.69 incl. VAT