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Brass 2/2 normally closed solenoid valves

Brass 2/2 Normally Closed Solenoid Valves

Brass 2/2 normally closed solenoid valves are designed to remain closed when de-energised and open when electrical power is applied, providing reliable on/off control of fluids and gases. These electrically operated valves are widely used across industrial, commercial and process systems for controlling water, air, oil, gas and steam. The 2/2 configuration (two ports, two positions) ensures simple and efficient flow control, while the normally closed (NC) design provides a fail-safe shut-off in the event of power loss. Key Features: Normally closed operation (energise to open) Durable brass valve bodies BSP threaded connections Suitable for water, air, oil and light gases Fast switching and reliable sealing Wide range of voltages including 12V, 24V, 110V & 230V Typical Applications: Water control systems Air and pneumatic circuits Oil and fuel handling Irrigation systems Industrial automation General fluid shut-off and control All brass 2/2 normally closed solenoid valves are available from UK stock with fast delivery.

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Brass 2/2 normally closed pilot operated solenoid valves (also known as pressure assisted solenoid valves) are designed for higher flow applications where system pressure is available to assist valve operation.

Unlike direct acting valves, pilot operated solenoid valves require a minimum pressure differential between inlet and outlet (typically around 0.5 bar) to function correctly.

When energised, the solenoid opens a pilot orifice, allowing system pressure to lift the diaphragm and fully open the valve. This design enables higher flow rates with lower power consumption.

The normally closed (NC) configuration ensures the valve remains shut when de-energised, providing safe and reliable shut-off.

Key Features:
Pilot operated (pressure assisted design)
Normally closed (energise to open)
Suitable for higher flow applications
Durable brass valve bodies
BSP threaded connections
Efficient operation with lower power coils
Available in multiple voltages including 12V, 24V, 110V & 230V
Important Note:

Pilot operated valves require a minimum pressure differential and are not suitable for vacuum or zero-pressure applications. For those applications, use direct acting solenoid valves.

Typical Applications:
Water systems and distribution
HVAC and heating systems
Irrigation systems
Industrial process control
Oil and light fluid handling

All brass pilot operated solenoid valves are available from UK stock with fast delivery.

Brass 2/2 Normally Closed - Pilot Assisted

Brass 2/2 normally closed direct acting solenoid valves (also known as zero rated solenoid valves) are designed to operate from zero pressure, making them ideal for applications where no differential pressure is available.

Unlike pilot-operated valves, direct acting solenoid valves can open fully using only the electromagnetic force of the coil, allowing reliable operation from vacuum conditions up to maximum rated pressure.

The normally closed (NC) design ensures the valve remains shut when de-energised, providing safe shut-off in the event of power loss.

Key Features:
Direct acting (zero pressure operation)
Normally closed (energise to open)
Suitable for vacuum and low-pressure systems
Durable brass construction
BSP threaded connections
Fast response and reliable sealing
Available in multiple voltages including 12V, 24V, 110V & 230V
Typical Applications:
Vacuum systems
Low-pressure fluid control
Dosing and filling systems
Laboratory and analytical equipment
Water, air and light oil control
General industrial automation

Direct acting brass solenoid valves are ideal where consistent operation is required regardless of system pressure.

Brass 2/2 Normally Closed - Direct Acting

Filters

Price

Valve / Product Type

Condensate drain0

Automated + time control drain valves

Safety Shut Off0

Safety shut off isolation valve, shuts off and secures air line systems, will vent downstream air when closed.

Solenoid Valve0

Valves controlled by electrical signal via a solenoid or electro magnet.

Port Size

M50

1/8 thread0

valves with 1/8 inch threaded ports

1/4 thread0

valves with 1/4 inch threaded ports

6mm0

3/8 thread0

valves with 3/8 inch threaded ports

1/2 thread0

valves with 1/2 inch threaded ports

3/4 thread0

valves with 3/4 inch threaded ports

1 thread0

valves with 1 inch threaded ports

11/4 thread0

valves with 11/4 inch threaded ports

11/2 thread0

valves with 11/2 inch threaded ports

2 thread0

valves with 2 inch threaded ports

21/2 thread0

valves with 21/2 inch threaded ports

3 thread0

valves with 3 inch threaded ports

Media

Air0

Fluid (Non Aggressive)0

Fluid (Slight Acid/Alkali)0

Gases (Non Aggressive)0

Gases (Slight Acid/Alakli)0

Natural Gas0

Oils + Fuels 50cSt Max0

Steam0

Vacuum (Low)0

Vacuum (Medium)0

Vacuum (High)0

Water0

Water (RO/Pure/Demin)0

Body Material

Brass0

Bronze0

Stainless Steel0

Pressure

Vacuum0

Vacuum products including valves, filters, regulators for vacuum and high vacuum systems down to -101Kpa.

0.02 Bar (20 mBar)0

0.02 Bar = 20 millibars = 0.29psi = 2 Kpa

0.1 Bar (100 mBar)0

0.1 Bar = 100 millibars = 1.47 psi = 1kPa

0.2 Bar (200 mBar)0

0.2 Bar = 200 millibars = 2.94 psi = 20kPa

0.3 Bar (300 mBar)0

0.3 Bar = 300 millibars = 4.41 psi = 30 kPa

0.4 Bar (400 mBar)0

0.4 Bar = 400 millibars = 4.41 psi = 40 kPa

0.5 Bar (500 mBar)0

0.5 Bar = 500 millibars = 7.36 psi = 50 kPa

0.6 Bar (600 mbar)0

0.6 Bar = 600 millibars = 8.83 psi = 60 kPa

0.7 Bar (700 mBar)0

0.7 Bar = 700 millibars = 10.3 psi = 70 kPa

0.8 Bar (800 mBar)0

0.8 Bar = 800 millibars = 11.77 psi = 80 kPa

1 Bar0

1 Bar = 1000 millibars = 14.71 psi = 100 kPa = 0.1 MPa

1.2 Bar0

1.2 Bar = 1200 millibars = 17.65 psi = 1200 kPa = 0.12 MPa

1.3 Bar0

1.3 Bar = 1300 millibars = 19.12 psi = 1300 kPa = 0.13 MPa

1.4 Bar0

1.4 Bar = 1400 millibars = 20.59 psi = 1400 kPa = 0.14 MPa

1.5 Bar0

1.5 Bar = 1500 millibars = 22.07 psi = 1500 kPa = 0.15 MPa

1.6 Bar0

1.6 Bar = 1600 millibars = 23.54 psi = 1600 kPa = 0.16 MPa

2 Bar0

2 Bar = 2000 millibars = 29.42 psi = 2000 kPa = 0.2 MPa

2.5 Bar0

2.5 Bar = 2500 millibars = 36.78 psi = 2500 kPa = 0.25 MPa

3 Bar0

3 Bar = 3000 millibars = 44.13 psi = 3000 kPa = 0.3 MPa

3.5 Bar0

3.5 Bar = 3500 millibars = 51.49 psi = 3500 kPa = 0.35 MPa

4 Bar0

4 Bar = 4000 millibars = 58.84 psi = 4000 kPa = 0.4 MPa

4.5 Bar0

4.5 Bar = 4500 millibars = 66.20 psi = 4500 kPa = 0.45 MPa

5 Bar0

5 Bar = 5000 millibars = 73.55 psi = 5000 kPa = 0.5 MPa

5.5 Bar0

5.5 Bar = 5500 millibars = 80.91 psi = 5500 kPa = 0.55 MPa

6 Bar0

6 Bar = 6000 millibars = 88.26 psi = 6000 kPa = 0.6 MPa

6.5 Bar0

6.5 Bar = 6500 millibars = 95.62 psi = 6500 kPa = 0.65 MPa

7 Bar0

7 Bar = 7000 millibars = 102.97 psi = 7000 kPa = 0.7 MPa

7.5 Bar0

7.5 Bar = 7500 millibars = 110.33 psi = 7500 kPa = 0.75 MPa

8 Bar0

8 Bar = 8000 millibars = 117.68 psi = 8000 kPa = 0.8 MPa

8.5 Bar0

8.5 Bar = 8500 millibars = 125.04 psi = 8500 kPa = 0.85 MPa

9 Bar0

9 Bar = 9000 millibars = 132.39 psi = 9000 kPa = 0.9 MPa

10 Bar0

10 Bar = 147.1 psi = 1 MPa

12 Bar0

12 Bar = 176.52 psi = 1.2 MPa

13 Bar0

13 Bar = 191.23 psi = 1.3 MPa

14 Bar0

14 Bar = 205.94 psi = 1.4 MPa

15 Bar0

15 Bar = 220.65 psi = 1.5 MPa

16 Bar0

16 Bar = 235.36 psi = 1.6 MPa

17 Bar0

17 Bar = 250.07 psi = 1.7 MPa

18 Bar0

18 Bar = 264.78 psi = 1.8 MPa

20 Bar0

20 Bar = 294.2 psi = 2 MPa

25 Bar0

25 Bar = 367.8 psi = 2.5 MPa

30 Bar0

30 Bar = 441.3 psi = 3 MPa

35 Bar0

35 Bar = 514.9 psi = 3.5 MPa

40 Bar0

40 Bar = 588.4 psi = 4 MPa

50 Bar0

50 Bar = 735.5 psi = 5 MPa

60 Bar0

60 Bar = 882.6 psi = 6 MPa

64 Bar0

64 Bar = 941.4 psi = 6.4 MPa

70 Bar0

70 Bar = 1029.7 psi = 7 MPa

80 Bar0

80 Bar = 1176.8 psi = 8 MPa

90 Bar0

90 Bar = 1323.9 psi = 9 MPa

100 Bar0

100 Bar = 1471 psi = 10 MPa

120 Bar0

120 Bar = 1765.2 psi = 12 MPa

130 Bar0

130 Bar = 1912.3 psi = 13 MPa

135 Bar0

140 Bar0

140 Bar = 2059.4 psi = 14 MPa

150 Bar0

150 Bar = 2206.5 psi = 15 MPa

160 Bar0

160 Bar = 2353.6 psi = 16 MPa

200 Bar0

200 Bar = 2942 psi = 20 MPa

225 Bar0

225 Bar = 3309.75 psi = 22.5 MPa

270 Bar0

270 Bar = 3971.7 psi = 27 MPa

300 Bar0

300 Bar = 4413 psi = 30 MPa

Seals

ECO0

ECO – Epichlorohydrin Rubber (Epichlorohydrin - or Herchlor, Gechron or Hydrin). excellent resistance to acids, alkali's and ozone -35°C to +125°C

EPDM0

EPDM (Ethylene Propylene Diene Monomer) - known as Ethylene Propylene terpolymer, Buna-AP, Dutral, Polysar-EDM, Royalene, Vistalon, Keltan, Epcar, Nordel or Epsyn). Good for hot and drinking water, Steam, Freon refrigerant gas and Air -40°C to +120°C (+150°C steam) Poor resistance to oils + fuels

FKM (Viton)0

FKM Fluoro elastomer (Fluorocarbon) Viton® Dupont registered, known as Tecnoflon, Fluorel, Dai-El. Good for hot water, acid, alkali, oils, hydrocarbons and salt solutions, many aggressive chemicals, diluted acids, weak alkali's, mineral oils, aliphatic and aromatic hydrocarbons, chlorinated hydrocarbons, sunlight and ozone. -26°C to +205°C. Poor resistance to Ketone's and Acetone.

FFKM (Kalrez)0

FF-KM Perfluoroelastomer - known as Kalrez, Chemraz or Perlast. Good most Solvents, Chemicals + excellent resistance to almost every thing, far surpassing FKM. -40°C to +250°C.

HNBR0

HNBR (Hydrogenated Nitrile Butadine Rubber) also known as Therban, Zetpol or Tornac). Good for motor oils, sour gas, amine oil mixtures, oxidised fuels, lubricating oils, mineral based hydraulic oil, animal and vegetable oil, diesel fuel, ozone, dilute acids and bases, new bio-oils, H2S Hydrogen Sulphide and C02 carbon dioxide. -40°C to +150°C. Poor for concentrated alkali's, esters, alkyl phosphate, ethers, halogenated solvents, ketone's, halogenated hydrocarbons, solvents and flames.

Hypalon0

Hypalon is a chlorosulfonated polyethylene (CSPE) synthetic rubber (CSM). Good for chemicals, ozone, ultraviolet light, oxidising agents, hot water, corrosive chemicals, low gas permeability, good electrical properties, low flammability. -35°C to +125°C. Poor to fair fuel resistance and its low temperature properties are generally limited.

NBR0

NBR (Nitrile Buna Rubber) known as Nitrile Butadine, Buna-N, Hycar, Chemigum, Butakon, Breaon, Butacril, Paracil, Nipol, Perbunan, Krynac or Europrene-N. Good for Aliphatic Hydrocarbons, Petroleum, Fuels, Mineral Oil, Vegetable and Hydraulic Oil, Alcohol and many Acids. -35°C to +100°C. Poor for Ozone, Acetone, Methyl ethyl Ketone, Chlorinated Hydrocarbons, Ethers and Esters.

Neoprene0

Neoprene known as CR or Chloroprene. Good resistance to Freon and ammonia, flames, excellent UV resistance, Ozone, oxygen and sunlight, tough, abrasion resistant and has a low compression set with an outstanding ability to adhere to metals. -20°C to +110°C.

PTFE (Teflon)0

PTFE (Polytetrafluoroethylene) also known as Teflon® Dupont registered. Excellent resistance to almost every fluid or gas. -200°C to +230°C

Silicone0

Silicone (VMQ) known as PVMQ, Silastic, Siloprene, Rhodorsil or Silplus. Good resistance to Oil, solvents, aniline alcohol, dilute acids or bases, benzene, toluene, petrol. -60°C to +230°C. Poor resistance Diesel, hot air, steam over 150 C, strong acids and bases.

VST0

VST (Viton-Silicone-Teflon). Has enhanced chemical resistance compared to Viton, especially against aggressive chemicals like ketones, esters, and some organic acids. Combines the properties of Viton, silicone, and Teflon, offering improved flexibility, compression set resistance, and low-temperature performance compared to standard Viton. -40°C to 200°C

Voltage

6vDC0

6 volts Direct Current

12vDC0

12 volts Direct Current

12vAC0

12 volts 50/60Hz Alternating Current

24vDC0

24 volts Direct Current

24vAC0

24 volts 50/60Hz Alternating Current

36vAC0

36 volts 50/60Hz alternating current

48vAC0

48 volts 50/60Hz alternating current

48vDC0

48 volts Direct Current

110vAC0

110 volts 50/60Hz Alternating Current

110vDC0

110 volts Direct Current

230VAC0

230 volts 50/60Hz Alternating Current

200vDC0

200 volts Direct Current

380vAC0

380 volts 50/60Hz Alternating Current

Approval: ATEX,WRAS,IP etc

ATEX Exm0

ATEX Protection by encapsulation ll 2 G Ex mb ll T4 Gb and ll 2 D Ex tb IIIC T130°C Db IP65

ATEX Exd0

ATEX Protection by enclosure, EEx d IIC T flameproof solenoid coil

IP540

Dust protected and protected against splashing water

IP650

Dust tight and protected against water jets

IP660

Dust protected and protected against powerful water jets.

IP670

Dust protected and protected against immersion in water

IP680

Dust protected and protected against the effects of continuous immersion in water.

CSA0

CSA approval certifies products for safety and performance, conducted by the Canadian Standards Association.

EAC0

EAC (Eurasian Conformity) approval certifies products' compliance with technical regulations for the Eurasian Economic Union market, ensuring safety and quality standards are met

EN1610

EN161 approval is a European standard for gas safety shut-off valves, ensuring they meet specified safety and performance criteria.

FM0

FM Approval is a certification by FM Global for products meeting rigorous safety and performance standards, ensuring reliability in commercial and industrial settings.

SIL30

SIL3 (Safety Integrity Level 3) approval certifies a system's capability to meet stringent safety standards, ensuring reliability and minimal risk in high-risk environments.

UL0

UL (Underwriters Laboratories) approval indicates that a product has met safety standards set by UL for electrical devices and components.

WRAS0

WRAS approval ensures water fittings meet UK water regulations, safeguarding public health by preventing contamination, waste, and misuse of water supplies.

Orifice

0.8mm0

Valve orifice or sealing face with diameter 0.8mm

1.0mm0

Valve orifice or sealing face with diameter 1mm

1.2mm0

Valve orifice or sealing face with diameter 1.2mm

1.3mm0

Valve orifice or sealing face with diameter 1.3mm

1.5mm0

Valve orifice or sealing face with diameter 1.5mm

1.6mm0

Valve orifice or sealing face with diameter 1.6mm

2.0mm0

Valve orifice or sealing face with diameter 2mm

2.3mm0

Valve orifice or sealing face with diameter 2.3mm

2.5mm0

Valve orifice or sealing face with diameter 2.5mm

3.0mm0

Valve orifice or sealing face with diameter 3mm

3.5mm0

Valve orifice or sealing face with diameter 3.5mm

4.0mm0

Valve orifice or sealing face with diameter 4mm

4.5mm0

Valve orifice or sealing face with diameter 4.5mm

5.0mm0

Valve orifice or sealing face with diameter 5

6.0mm0

Valve orifice or sealing face with diameter 6mm

8.0mm0

Valve orifice or sealing face with diameter 8mm

10mm0

Valve orifice or sealing face with diameter 10mm

12mm0

Valve orifice or sealing face with diameter 12mm

13mm0

Valve orifice or sealing face with diameter 13mm

14mm0

Valve orifice or sealing face with diameter 14mm

15mm0

Valve orifice or sealing face with diameter 15mm

20mm0

Valve orifice or sealing face with diameter 20mm

25mm0

Valve orifice or sealing face with diameter 25mm

32mm0

Valve orifice or sealing face with diameter 32mm

35mm0

Valve orifice or sealing face with diameter 35mm

38mm0

Valve orifice or sealing face with diameter 38mm

40mm0

Valve orifice or sealing face with diameter 40mm

45mm0

Valve orifice or sealing face with diameter 45mm

50mm0

Valve orifice or sealing face with diameter 50mm

65mm0

Valve orifice or sealing face with diameter 65mm

80mm0

Valve orifice or sealing face with diameter 80mm

Operation

Assisted Lift0

Assisted lift solenoid valve assists in opening against pressure, ensuring reliable operation from vacuum to medium pressure systems.

Direct Acting0

Directly controls flow without external pressure assistance operates from vacuum upwards.

Pressure Assisted0

Operate via pilot pressure control and require a minimum pressure difference between inlet and outlet from 0.5 Bar.

Options required

Anti Water Hammer0

Prevents or reduces water hammer caused by sudden changes in fast moving fluid flow.

Degreased0

Oil and grease removed typically for oxygen or paint spray use.

Manual Override0

A facility to manually move the valve into the fully actuated position via a button, lever or key.

Mounting Bracket0

Valve has the facility to be supplied with a bracket for mounting and securing.

Mounting Holes0

Supplied with additional threaded holes typically in the base, typically for securing to a baseplate.

Outlet - right angle0

The outlet port is at right angles to inlet port, ideal for space efficiency.

Outlet - Hose tail0

Outlet port and a Hose tail or barb to connect directly into flexible tube

Position Feedback Closed0

The valve is equipped with an additional volt free electrical switch that is triggered when the valve is mechanically closed.

Position Feedback Open+Closed0

The valve is equipped with two additional volt free electrical switches that are triggered when the valve is mechanically closed or open position.

Shading Ring - Silver0

The copper shading ring in the solenoid tube has been replaced with silver. Typically used for RO water and aggressive media applications.

Shading Ring - without0

The copper shading ring in the solenoid tube has been removed, for DC voltages only and typically for aggressive media applications.

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Showing 1 - 20 of 96 total products

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1″ WRAS Brass Water Solenoid Valve 0-10 Bar Normally Closed £166.62 £108.30 inc VAT

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144 IN STOCK

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1 BSP Brass Solenoid Valve 0.5-20 Bar Steam 200°C N/Closed £238.13 £193.07 inc VAT

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