Key Features

Valve / Product Type: Solenoid Valve
Body Material: Brass
Voltage: 110vAC, 110vDC, 12vDC, 200vDC, 230VAC, 24vAC, 24vDC, 36vAC, 48vAC, 48vDC
Port Size: 1 thread
Function: 2/2 Failsafe Open
Operation: Assisted Lift

Datasheets

1 inch Brass solenoid valve 0-5 Bar 2/2 way Normally Open

£235.09 incl. VAT £195.91 ex. VAT

-27% Was ~~£320.58~~ incl. VAT

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Brand: AAA Enterprise (Sunwell)

Model: RK25

Stock: 13 in stock

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Description

1 Inch Brass Normally Open Solenoid Valve – Zero Pressure 2/2 Way NO – Sunwell RK25

The Sunwell RK25 is a high-performance 1 inch normally open brass solenoid valve designed for reliable operation with zero pressure differential. Its assisted-lift diaphragm design and anti-water hammer operation provide smooth valve actuation, making it ideal for water, air, vacuum, light oils and general industrial fluid control applications.

In its de-energised state the valve remains open, closing only when the coil is energised. The forged brass body combined with stainless steel internal components provides excellent strength, corrosion resistance and long service life.

Supplied with NBR seals as standard, the RK25 is also available with optional FKM or EPDM seals for enhanced media compatibility. An optional ATEX certified coil is available for hazardous area installations.

Features & Benefits

✓ Normally open (fails open) operation

✓ Zero pressure assisted-lift diaphragm design

✓ Anti-water hammer operation

✓ Forged brass body

✓ Stainless steel internal components

✓ NBR seals as standard with optional FKM or EPDM

✓ Continuous 100% duty rated Nass Magnet coil

✓ Optional ATEX certified coil

✓ DIN 43650A IP65 electrical connection

✓ Optional BSP or NPT threaded connections

Valve Specification

Function: 2/2 way normally open

Operation: Assisted-lift diaphragm (zero pressure rated)

Port Size: 1" BSP (optional NPT)

Orifice: 28 mm

Flow Factor (Kv): 157.3 L/min

Pressure Range:

AC Coil: 0–5 Bar

DC Coil: 0–4 Bar

Maximum Media Viscosity: 50 cSt

Opening Time: 200–500 ms

Closing Time: 1000–4000 ms

Mounting Position: Any position.

Construction

Body: Forged brass

Internal Parts: Stainless steel

Seal Material:

NBR (Standard)

FKM (Optional)

EPDM (Optional)

Electrical Connection: DIN 43650A

IP65 with connector included

Coil Specification

Coil: 18.5 Watt Nass Magnet

Class F (155°C)

100% continuous duty

Protection: IP65 with DIN 43650A connector

Voltages:

12VDC

24VDC

48VDC

110VDC

220VDC

24VAC

48VAC

110VAC

230VAC

Hazardous Area Option

Optional ATEX Ex mb certified coil available:

Ex mb IIC T4 Gb

Ex mb tb IIIC T130°C Db

Suitable for Zones 21 & 22

Maximum media temperature: +80°C

Maximum operating pressure with ATEX coil:

AC: 3 Bar

DC: 1 Bar.

Media Compatibility

Suitable for:

Air

Water

Light oils

Vacuum to 10⁻¹ Torr

Most fluids below 50 cSt viscosity

Most gases compatible with the selected seal material and valve construction.

Pressure & Temperature

Working Pressure:

AC Coil: 0–5 Bar

DC Coil: 0–4 Bar

Media Temperature: NBR: -5°C to +80°C

FKM & EPDM: -10°C to +145°C

Ambient Temperature: -20°C to +60°C.

Typical Applications

Normally open water control systems

Compressed air systems

Vacuum systems

Light oil control

General industrial process control

Cooling systems

Water treatment

OEM machinery

Related Products & Categories

2/2 Normally Open Brass Solenoid Valves

2/2 Normally Open Stainless Solenoid Valves

Normally Open Motor Actuated Ball Valves

2/2 Normally Open WRAS Brass Solenoid Valves

View Technical Specification

Technical Specification

Brand: AAA Enterprise (Sunwell)

Model: RK25

Width: 71.00 mm

Height: 135.00 mm

Depth: 90.00 mm

Weight: 1.60 kg

Valve / Product Type: Solenoid Valve

Body Material: Brass

Voltage: 110vAC, 110vDC, 12vDC, 200vDC, 230VAC, 24vAC, 24vDC, 36vAC, 48vAC, 48vDC

Port Size: 1 thread

Function: 2/2 Failsafe Open

Operation: Assisted Lift

Pressure: 0.02 Bar (20 mBar), 0.1 Bar (100 mBar), 0.2 Bar (200 mBar), 0.3 Bar (300 mBar), 0.4 Bar (400 mBar), 0.5 Bar (500 mBar), 0.6 Bar (600 mbar), 0.7 Bar (700 mBar), 0.8 Bar (800 mBar), 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

Seals: EPDM, NBR, FKM (Viton)

Approvals:: ATEX Exm, IP65

Media: Air, Fluid (Non Aggressive), Gases (Non Aggressive), Oils + Fuels 50cSt Max, Vacuum (Low), Water

Options required: Anti Water Hammer

Orifice: 28mm

Key Features

Datasheets

1 inch Brass solenoid valve 0-5 Bar 2/2 way Normally Open

Description

1 Inch Brass Normally Open Solenoid Valve – Zero Pressure 2/2 Way NO – Sunwell RK25

Features & Benefits

Valve Specification

Construction

Coil Specification

Voltages:

Hazardous Area Option

Media Compatibility

Pressure & Temperature

Typical Applications

Related Products & Categories

Technical Specification

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