Key Features

High-performance assisted-lift design
Compact, durable nylon construction
Silver shading ring for AC or DC operation without shading ring
ATEX compliant option for hazardous environments
EPDM standard with multiple seal options (NBR, Viton)

Datasheets

3/4 Nylon solenoid valve 0-7 Bar 2/2 way Normally Closed

Name: 3/4 Nylon solenoid valve 0-7 Bar 2/2 way Normally Closed
Brand: AAA (Sunwell)
SKU: PK20
Price: 132.76 GBP
Availability: InStock

£132.76 incl. VAT £110.63 ex. VAT

-19% Was ~~£163.76~~ incl. VAT

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Brand: AAA Enterprise (Sunwell)

Model: PK20

Stock: 37 in stock

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Description

3/4 Inch Nylon Solenoid Valve – Zero Pressure 2/2 Way NC – Sunwell PK20

The Sunwell PK20 is a high-performance 3/4 inch nylon solenoid valve designed for reliable operation with zero pressure differential. Its assisted-lift diaphragm design allows the valve to open from vacuum or zero pressure, making it ideal for low-pressure water systems, demineralised water, reverse osmosis (RO) equipment, vacuum applications and light chemical processes.

The corrosion-resistant nylon body combined with stainless steel internals provides excellent durability while keeping weight to a minimum. EPDM seals are supplied as standard, with optional NBR or FKM seals available for wider media compatibility.

Available with AC or DC coils, the PK20 features continuous 100% duty operation, DIN 43650A electrical connection and an optional ATEX certified coil for hazardous area installations.

Features & Benefits

✓ Zero pressure assisted-lift operation

✓ Suitable for vacuum and low-pressure systems

✓ Corrosion-resistant nylon body

✓ Stainless steel internal components

✓ EPDM seals as standard with optional NBR or FKM

✓ Continuous 100% duty rated Nass Magnet coil

✓ Optional ATEX certified coil

✓ DIN 43650A IP65 electrical connection

✓ Optional BSP, NPT or Rc threaded connections

Valve Specification

Function: 2/2 way normally closed

Operation: Assisted-lift diaphragm (zero pressure rated)

Port Size: 3/4" BSP (optional NPT or Rc)

Orifice: 28 mm

Flow Factor (Kv): 140.14 L/min

Pressure Range:

AC Coil: 0–7 Bar

DC Coil: 0–2 Bar

Maximum Media Viscosity: 50 cSt

Opening Time: 200–400 ms

Closing Time: 1000–3000 ms

Mounting Position: Coil upright preferred.

Construction

Body: Glass reinforced nylon

Internal Parts: Stainless steel

Seal Material:

EPDM (Standard)

NBR (Optional)

FKM (Optional)

Shading Ring:

Silver (AC)

None (DC)

Electrical Connection: DIN 43650A, IP65 with connector

Coil Specification

AC Coil:

15 Watt Nass Magnet

Class F (155°C)

100% continuous duty

DC Coil:

18.5 Watt Nass Magnet

Class F (155°C)

100% continuous duty

Voltages:

12VDC

24VDC

48VDC

110VDC

12VAC

24VAC

48VAC

110VAC

230VAC

380VAC

Hazardous Area Option

Optional ATEX Ex mb certified coil available:

Ex mb IIC T4

Ex mb tb IIIC T130°C Db

Suitable for Zones 21 & 22

Maximum operating pressure with ATEX coil:

AC: 2 Bar

DC: 1 Bar

(without AC shading ring).

Media Compatibility

Suitable for:

Air

Water

Demineralised water

Reverse osmosis (RO) water

Vacuum to 10⁻¹ Torr

Slight acids and alkalis

Light chemicals

Most gases and fluids compatible with the selected seal material.

Pressure & Temperature

Working Pressure:

0–7 Bar (AC)

0–2 Bar (DC)

Media Temperature: +4°C to +60°C

Ambient Temperature: +4°C to +50°C.

Typical Applications

Low-pressure water control

RO water purification systems

Demineralised water systems

Chemical dosing equipment

Vacuum systems

Water treatment

Light industrial process control

Laboratory equipment

Related Products & Categories

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3/4" Stainless Steel Solenoid Valves

UPVC Motor Ball Valves

View Technical Specification

Technical Specification

Brand: AAA Enterprise (Sunwell)

Model: PK20

Width: 76.00 mm

Height: 124.00 mm

Depth: 90.00 mm

Weight: 0.70 kg

Valve / Product Type: Solenoid Valve

Body Material: Nylon

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

Port Size: 3/4 thread

Function: 2/2 Failsafe Closed

Operation: Assisted Lift

Pressure: 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, 5.5 Bar, 6 Bar, 6.5 Bar, 7 Bar

Seals: EPDM, NBR, FKM (Viton)

Approvals:: ATEX Exm, IP65

Media: Fluid (Slight Acid/Alkali), Gases (Slight Acid/Alakli), Vacuum (Low), Water (RO/Pure/Demin)

Options required: Mounting Holes, Shading Ring - Silver

Orifice: 28mm

Key Features

Datasheets

3/4 Nylon solenoid valve 0-7 Bar 2/2 way Normally Closed

Description

3/4 Inch Nylon Solenoid Valve – Zero Pressure 2/2 Way NC – Sunwell PK20

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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