Description
2" Plastic Water Solenoid Valve 0.3–10 Bar – S4801
The S4801 is a high-flow 2" reinforced nylon water solenoid valve designed for irrigation, water control and other high-volume fluid applications.
It uses a 2/2 way normally closed, servo-assisted diaphragm design with an adjustable flow controller, manual override and anti-water-hammer construction. The 2" version has a large 55mm orifice and 600 L/min water flow capacity.
Valve Function & Operation
Function: 2/2 Way Normally Closed
Operation: Servo / Pressure Assisted
Manual Override: Included
Flow Controller: Included
Design: Anti Water Hammer
Minimum Differential Pressure: 0.3 Bar
Maximum Pressure: 10 Bar
The pressure-assisted diaphragm requires at least 0.3 Bar differential pressure across the valve for reliable operation.
2" BSP Connection
Port: 2" BSP
Optional Thread: NPT
Orifice: 55mm
The large connection and 55mm internal flow path make the S4801 particularly suitable for high-volume water systems where pressure loss needs to be kept relatively low.
High Flow Capacity
Water Flow: 600 L/min @ 1 Bar ΔP
Orifice: 55mm
This is the manufacturer's stated flow figure for the 2" S4801.
The manufacturer's pressure-loss graph on page 1 also shows the 2" valve within the high-flow working region of the S401 range.
Adjustable Flow Controller
An integrated manual flow controller allows the maximum valve opening to be adjusted.
This can be useful for:
✓ Balancing Water Flow
✓ Limiting Maximum Flow
✓ Irrigation Zone Adjustment
✓ Commissioning Water Systems
✓ Reducing Excessive Flow Rates
The flow controller and manual override are both identified as available features in the manufacturer's specification.
Manual Override
The valve incorporates a manual override, allowing the valve to be operated locally without energising the solenoid coil.
This is particularly useful during installation, commissioning, testing and maintenance.
Anti Water Hammer Design
The S4801 incorporates an anti-water-hammer diaphragm design, controlling the opening and closing action of the large 55mm flow path.
This is particularly valuable on a 2" water valve, where abrupt changes in a high flow rate can otherwise generate significant hydraulic shock within the pipework.
Opening / Closing Time: 100 milliseconds maximum.
Reinforced Nylon Construction
Body: Reinforced Nylon
Internals: Stainless Steel
Diaphragm / Seal: NBR
One important correction from your original data, Mike: the manufacturer sheet specifies NBR for the 1½" and 2" versions, while EPDM is used on the 3/4" and 1" models. So for this S4801 2", I would list NBR, not EPDM.
Media Compatibility
The manufacturer identifies the S401 range for:
✓ Water
✓ Air
✓ Compatible Fluids
✓ Compatible Gases
Maximum Media Viscosity: 50 cSt
Suitability for fluids other than water should be confirmed against the reinforced nylon, stainless steel and NBR wetted materials.
Temperature Range
Media Temperature: +5°C to +50°C
Ambient Temperature: +5°C to +40°C
Maximum Viscosity: 50 cSt
Mounting Position: Coil Upright
The upright mounting requirement is worth retaining in the product specification because the manufacturer specifically calls for it.
10W Solenoid Coil
Coil: 11630
DC Power: 10 Watts
AC Power: 26VA Inrush / 14VA Holding
Duty Cycle: 100% Continuous
Insulation: Class F 155°C
Connection: DIN43650A
Protection: IP65
The manufacturer confirms continuous-duty operation and IP65 protection.
Voltage Options
DC:
✓ 12V DC
✓ 24V DC
✓ 48V DC
✓ 110V DC
✓ 220V DC
AC:
✓ 12V AC
✓ 24V AC
✓ 48V AC
✓ 110V AC
✓ 230V AC
AC versions operate at 50/60Hz.
Overall Dimensions
For the 2" S4801, the manufacturer's dimensional drawing on page 1 gives:
Overall Height (A): 190mm
Overall Length (B): 170mm
Overall Width (C): 126mm
Typical Applications
✓ Irrigation Systems
✓ Agricultural Water Systems
✓ Water Storage Tanks
✓ Water Treatment Equipment
✓ Process Water Systems
✓ Cooling Water Systems
✓ Rainwater Systems
✓ Pump Control Systems
✓ Industrial Water Equipment
✓ Large Flow Water Control
✓ OEM Water Systems
Why Choose the S4801?
The S4801 combines a large 2" connection and 55mm orifice with 600 L/min water flow, making it particularly useful for applications where a compact conventional solenoid valve would be too restrictive.
The integrated flow regulator, manual override and anti-water-hammer design add practical control features for large water systems, while the reinforced nylon body keeps the valve considerably lighter and more corrosion resistant than many equivalent metal-bodied valves.
With operation from 0.3 to 10 Bar, 100% continuous-duty coil and multiple AC/DC voltage options, it provides a versatile high-flow solution for irrigation, water treatment and industrial water control.
Available S401 Range
3/4" – 27mm Orifice – 140 L/min
1" – 27mm Orifice – 200 L/min
1½" – 55mm Orifice – 520 L/min
2" – 55mm Orifice – 600 L/min
Normally open versions are also available within the S401 family.
Related Products & Categories
WRAS Approved Plastic Water Solenoid ValvesPlastic Solenoid Valves for WaterBrowse All WRAS Approved Water Valves
