2½ Inch DN65 Bronze Flanged Solenoid Valve – NC & NO – Sunwell LD65B & RL65B
The Sunwell LD65B and RL65B are heavy-duty 2½ inch (DN65) bronze flanged solenoid valves designed for reliable automatic control of water, air, diesel fuel and other compatible industrial fluids. Available in either normally closed (LD) or normally open (RL) operation, both valves utilise a pressure-assisted diaphragm design for dependable high-flow performance.
Manufactured from a one-piece bronze body with stainless steel internal components, these valves are suitable for demanding industrial applications where durability, long service life and reliable operation are essential.
Supplied with NBR seals as standard, the valves are also available with optional FKM seals for higher temperature applications. An optional ATEX certified coil is available for hazardous area installations.
Features & Benefits
✓ Available in normally closed or normally open operation
✓ High flow pressure-assisted diaphragm design
✓ Heavy-duty one-piece bronze body
✓ Stainless steel internal components
✓ PN16 flanged connections
✓ NBR seals as standard with optional FKM
✓ Continuous 100% duty rated Nass Magnet coil
✓ Optional ATEX certified coil
✓ DIN 43650A IP65 electrical connection
✓ Optional ANSI 150 or JIS 10K flange drilling
Valve Specification
Function:
2/2 Normally Closed (LD65B)
2/2 Normally Open (RL65B)
Operation: Pressure-assisted diaphragm
Minimum Differential Pressure: 0.5 Bar
Port Size: DN65 PN16 Flanged
(Optional ANSI 150 or JIS 10K)
Orifice: 80 mm
Flow Factor (Kv): 1172 L/min
Pressure Range:
Normally Closed:
AC: 0.5–10 Bar
DC: 0.5–7 Bar
Normally Open:
AC: 0.5–7 Bar
DC: 0.5–5 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 bronze
Internal Parts: Stainless steel
Seal Material: NBR (Standard)
FKM (Optional)
Electrical Connection: DIN 43650A
IP65 connector included
Coil Specification
Standard Coil: 18.5 Watt Nass Magnet
Class F (155°C)
100% continuous duty
Protection: IP65 with connector included
Available Voltages:
12VDC
24VDC
48VDC
110VDC
220VDC
24VAC
36VAC
48VAC
110VAC
230VAC
50/60 Hz.
Hazardous Area Option
Optional 22003EX ATEX coil available:
10 Watt
Ex mb IIC T4 Gb
Ex mb tb IIIC T130°C Db
Suitable for Zones 21 & 22
Maximum media temperature: +80°C.
Media Compatibility
Suitable for:
Water
Air
Diesel fuel
Most non-aggressive fluids below 50 cSt viscosity
Most gases compatible with the selected seal material and valve construction.
Pressure:
1 Bar, 1.2 Bar, 1.3 Bar, 1.4 Bar, 1.5 Bar, 1.6 Bar, 2 Bar, 2.5 Bar, 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
