Key Features

3" Brass Solenoid Valve
2/2 Way Normally Closed
Fail-Safe Closed – Power To Open
Pressure Assisted Diaphragm
Up To 10 Bar Pressure
75mm Orifice
Kv 83 m³/h Flow Capacity
3" BSP Connection
Adjustable Opening Speed
Interchangeable Pilot Jets
Water Hammer Reduction
Brass Valve Body
NBR Diaphragm & Seals
Water & Compressed Air
Fluids Up To 50 cSt
NBR Media Up To +90°C
16W DC Solenoid Coil
100% Duty Rated
IP65 Protection
DIN 43650A Form A Connector
12–400V AC/DC Options
Free UK Delivery Available

Datasheets

Description

3" Normally Closed Brass Solenoid Valve – CEME 8621

The CEME 8621-ESM-NBR is a 3" BSP normally closed brass solenoid valve designed for high-flow water, compressed air, light oils and other compatible neutral fluids.

This 2/2 way normally closed, pressure-assisted diaphragm valve remains closed when electrical power is removed and opens when energised. With its large 75mm orifice, conventional Kv flow factor of 83 m³/h and operating pressure up to 10 Bar, the 8621 provides exceptional flow capacity for large industrial water and fluid-control systems.

Valve Function & Operation

Function: 2/2 Way Normally Closed

Fail Position: Closed

Energised Position: Open

Operation: Pressure Assisted Diaphragm

Port Size: 3" BSP Female

Orifice: 75mm

Operating Pressure: Up To 10 Bar

Kv Flow Factor: 83 m³/h

The large diaphragm and 75mm flow path make the 8621 particularly suitable for applications requiring very high flow through 3" pipework.

3" BSP Connection & High Flow

Port: 3" BSP Female

Orifice: 75mm

Kv Flow Factor: 83 m³/h

The 3" model provides the highest flow capacity within the standard BSP Type 86 range, making it particularly suitable for large cooling-water circuits, process-water systems, industrial plant and other high-flow installations.

Adjustable Opening Characteristics

The 8621-ESM-NBR can be configured with interchangeable pilot jets to alter the valve opening characteristics.

Available Pilot Jets:

✓ 1.0mm Pilot Jet

✓ 0.8mm Pilot Jet

✓ 0.6mm Pilot Jet

✓ 0.4mm Pilot Jet

Selecting a smaller pilot jet provides a more controlled opening response, helping reduce sudden pressure changes in large-bore pipework systems.

This can be particularly useful where hydraulic shock or water hammer is a concern.

Brass & NBR Construction

Body Material: Brass

Internal Components: Stainless Steel

Seal Material: NBR

Diaphragm: NBR

The robust brass body and replaceable diaphragm construction are designed for demanding industrial fluid-control applications.

The Type 86 construction also provides replaceable coil, tube guide, plunger, spring and diaphragm components for servicing and maintenance.

Media Compatibility

Suitable applications include:

✓ Water

✓ Compressed Air

✓ Light Oils

✓ Cooling Water

✓ Process Water

✓ Compatible Neutral Gases

✓ Compatible Neutral Fluids

Maximum Viscosity: 50 cSt

For diesel, petrol, kerosene, LPG, propane or other specialist fuels and gases, compatibility and application suitability should be confirmed for the brass body, NBR seals and installation requirements before use.

Temperature

NBR Media Temperature: Up To +90°C

Maximum Ambient Temperature: +80°C

Alternative Type 86 sealing materials provide higher temperature capability where required, with EPDM rated to +130°C and FPM to +150°C within the wider family.

Solenoid Coil

DC Power: 16 Watts

AC Power:

11VA Holding

24VA Inrush

Duty Cycle: 100% ED Continuous

Coil Insulation: Class H

Electrical Connection: DIN 43650A Form A

Protection: IP65

The 16W DC operator provides dependable switching for this large normally closed diaphragm valve.

Voltage Options

DC:

✓ 12V DC

✓ 24V DC

✓ 48V DC

✓ 110V DC

AC:

✓ 12V AC

✓ 24V AC

✓ 48V AC

✓ 110V AC

✓ 230V AC

✓ 400V AC 50/60Hz

Dimensions & Weight

For the 3" CEME 8621:

Overall Length: 250mm

Overall Height: 190mm

Overall Width: 184mm

Dimension D: 139mm

Weight: Approximately 11.23kg

Typical Applications

✓ High Flow Water Systems

✓ Cooling Water Circuits

✓ Industrial Process Water

✓ Compressed Air Systems

✓ Large Pipework Systems

✓ Pump Control Systems

✓ Industrial Automation

✓ Process Fluid Control

✓ Water Hammer Reduction

✓ Fail-Closed Fluid Control

Why Choose the CEME 8621?

The CEME 8621 is the largest and highest-flow BSP model within the Type 86 normally closed range, designed for demanding 3" pipework installations requiring fail-closed operation.

Its substantial 75mm orifice and Kv 83 m³/h provide exceptional flow capacity, while the normally closed configuration automatically shuts off flow when electrical power is removed.

Interchangeable pilot jets provide an additional advantage in large water systems by allowing the opening characteristics to be tailored to the installation, helping reduce hydraulic shock and water hammer.

The combination of brass construction, NBR sealing, continuous-duty coil and serviceable diaphragm design makes the 8621 particularly suitable for demanding industrial water and fluid-control applications.

Available Type 86 Sizes

3/8" BSP – 10mm – Kv 1.86 m³/h

1/2" BSP – 12mm – Kv 2.10 m³/h

3/4" BSP – 20mm – Kv 5.70 m³/h

1" BSP – 25mm – Kv 9.60 m³/h

1¼" BSP – 32mm – Kv 22 m³/h

1½" BSP – 39mm – Kv 27 m³/h

2" BSP – 51mm – Kv 35 m³/h

2½" BSP – 65mm – Kv 63 m³/h

3" BSP – 75mm – Kv 83 m³/h

Related Products & Categories

Spare Solenoid Coils

3" Brass Solenoid Valves

DN80 Flange Solenoid Valves

3" to 12" WRAS Approved Valves

Solenoid Spares - Seals & Diaphragms

View Technical Specification

Technical Specification

Brand: CEME

Model: PU22528, 8621

Width: 184.00 mm

Height: 188.00 mm

Depth: 250.00 mm

Weight: 13.00 kg

Valve / Product Type: Solenoid Valve

Body Material: Brass

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

Port Size: 3 thread

Function: 2/2 Failsafe Closed

Operation: Pressure Assisted from 0.5 Bar

Pressure: 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

Seals: NBR

Approvals:: IP65

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

Options required: Anti Water Hammer

Orifice: 80mm

Found in these Categories

Reviews

★★★★★4.7 / 5 3 reviews

★★★★★

Thanks for the price match guarantee!! Ordered 3 off CEME solenoid valve 8621-esm-nbr 240vac arrived next morning. Thanks for the free helicopter too!! A+++ recommended. Nigel.

Reviewed on 14/10/2015 by electricF

★★★★★

Good price, both arrived next day. Prefer the UL CSA listed IP65 Class H IP68 coil and LED connector on this new CEME model. I will oder two more next month. If you can squeeze price if I order 10, for 2 a month delivery scheduled?. Thanks. PETRICA VIERU

Reviewed on 18/03/2016 by PETRICA VIERU

★★★★★

Item as described with fast delivery. Many Thanks.

Reviewed on 24/05/2020 by Noah

3 BSP Brass Solenoid Valve 0.3-10 Bar 2/2 Normally Closed

★★★★★ 4.7 / 5 (3 reviews)

£600.00 incl. VAT £500.00 ex. VAT

-60% Was ~~£1,493.54~~ incl. VAT

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Add To Cart

Brand: CEME

Model: PU22528, 8621

Stock: 6 in stock

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Key Features

Datasheets

Description

3" Normally Closed Brass Solenoid Valve – CEME 8621

Valve Function & Operation

3" BSP Connection & High Flow

Adjustable Opening Characteristics

Brass & NBR Construction

Media Compatibility

Temperature

Solenoid Coil

Voltage Options

Dimensions & Weight

Typical Applications

Why Choose the CEME 8621?

Related Products & Categories

Technical Specification

Found in these Categories

Reviews

★★★★★4.7 / 5 3 reviews

3 BSP Brass Solenoid Valve 0.3-10 Bar 2/2 Normally Closed

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