Description
4 Inch DN100 Cast Iron Zero Pressure Flanged Solenoid Valve – Sunwell LK100C
The Sunwell LK100C is a heavy-duty 4 inch (DN100) cast iron flanged solenoid valve designed for reliable automatic control of water, air, vacuum, diesel fuel and other compatible industrial fluids without requiring a minimum pressure differential.
Its assisted-lift diaphragm design provides true zero-pressure operation, making it ideal for gravity-fed systems, storage tanks, vacuum applications and low-pressure process systems where conventional pilot-operated valves cannot operate reliably.
Manufactured from a one-piece cast iron body with stainless steel internal components, the LK100C combines exceptional flow capacity with dependable long-term service. Supplied with NBR seals as standard, the valve is also available with optional FKM seals for higher temperature applications.
Valve Specification
Function: 2/2 Way Normally Closed
Operation: Assisted-lift diaphragm (zero pressure rated)
Minimum Differential Pressure: 0 Bar
Port Size: DN100 PN16 Flanged
(Optional ANSI 150 or JIS 10K)
Orifice: 100 mm
Flow Factor (Kv): 2431 L/min
Pressure Range: 0–1 Bar
Maximum Media Viscosity: 50 cSt
Opening Time: 250–500 ms
Closing Time: 500–1000 ms
Mounting Position: Coil upright.
Construction
Body: One-piece cast iron
Internal Parts: Stainless steel
Seal Material: NBR (Standard)
FKM (Optional)
Electrical Connection: DIN 43650A
IP65 connector included
Coil Specification
Standard Coil:
30 Watt DC
30 VA AC (Rectified)
Nass Magnet Coil 22007
Class F (155°C)
100% continuous duty
Protection: IP65 with connector
AC versions supplied complete with rectified DIN connector.
Available Voltages:
24VDC
96VDC
196VDC
110VAC
230VAC
50/60 Hz.
Media Compatibility
Suitable for:
Water
Air
Vacuum
Diesel fuel
Most non-aggressive fluids below 50 cSt viscosity
Most gases compatible with the selected seal material and valve construction.
Pressure & Temperature
Working Pressure: 0–1 Bar
Media Temperature:
NBR: -5°C to +80°C
FKM: -5°C to +145°C
Ambient Temperature: -20°C to +60°C.
Typical Applications
Gravity-fed water systems
Storage tanks
Low-pressure process systems
Vacuum installations
Water treatment
Industrial process control
Diesel transfer systems
Pump discharge systems
General industrial automation
Large process plants
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