Description
3/4" 16 Bar Brass Solenoid Valve – SHAKO PU220A-06H
The SHAKO PU220A-06H is a high-flow 3/4" 2/2 way normally closed zero-rated assisted-lift brass solenoid valve designed for control of compressed air, water, vacuum, light oils and compatible gases and process fluids.
Combining an assisted-lift diaphragm with a large 20mm orifice, the PU220A-06H provides high flow capacity while retaining operation from zero positive pressure.
The higher-power 18.5W Class H solenoid operator provides reliable operation at pressures up to 16 Bar on both AC and DC versions. This makes the PU220A-06H particularly suitable for demanding applications requiring high flow, zero-pressure starting and increased positive pressure capability.
Manufactured from forged brass with stainless steel internal components, the PU220A-06H is supplied with NBR seals as standard, with FKM (Viton), EPDM or HNBR alternatives available. Media temperatures from -40°C up to +180°C can be accommodated according to the selected seal material and suitable solenoid operator.
Valve Function & Operation
Function: 2/2 way normally closed
Operation: Zero-rated assisted lift
Construction: Diaphragm
Port size: 3/4" BSP
Optional thread: NPT
Orifice: 20mm
Effective area: 162mm²
The assisted-lift design combines direct mechanical lifting with diaphragm assistance, allowing the valve to operate from zero positive pressure while providing a substantially larger flow path than a conventional direct acting valve.
This makes the PU220A-06H particularly suitable for systems where little or no pressure differential is available at start-up while still providing increased positive pressure capability.
The valve can also be used for suitable vacuum applications.
Pressure & Performance
Operating pressure range: Vacuum to 16 Bar
AC maximum pressure: 16 Bar
DC maximum pressure: 16 Bar
Vacuum capability: Up to 80% vacuum
Maximum vacuum: Approximately -0.8 Bar
Orifice size: 20mm
Effective area: 162mm²
Flow rate: 72 L/min water @ 1 Bar ΔP
The PU220A-06H high-pressure configuration has been tested and proven for operation up to 16 Bar with both AC and DC solenoid operators.
The higher-power 18.5W operator provides increased magnetic force while retaining the large 20mm flow orifice and zero-rated assisted-lift operating principle.
Construction & Materials
Body: Forged brass
Internals: Stainless steel
Valve stem: Stainless steel
Construction: Assisted-lift diaphragm
Orifice: 20mm
Effective area: 162mm²
Standard seal: NBR
Optional seals:
✓ FKM (Viton)
✓ EPDM
✓ HNBR
Installation: Horizontal
Net weight: Approximately 945g
Seal & Media Selection
Correct seal selection is essential when using the PU220A-06H with different fluids and temperatures.
NBR – Standard:
✓ -15°C to +80°C
✓ Air
✓ Water
✓ Neutral gases
✓ Mineral oil
FKM (Viton):
✓ -10°C to +180°C
✓ Fuel oil
✓ Gasoline / petrol
✓ High-test gasoline
✓ Diesel fuel
HNBR:
✓ -40°C to +150°C
✓ Air
✓ Water
✓ Gear oil
✓ Engine oil
EPDM:
✓ -5°C to +130°C
✓ Hot water
✓ Detergent liquids
Always confirm chemical compatibility of the selected seal and valve materials before use with fuels, gases, oils or specialist process fluids.
Media Temperature
The maximum media temperature is determined by the selected seal material and suitable solenoid operator.
NBR: -15°C to +80°C
FKM (Viton): -10°C to +180°C
EPDM: -5°C to +130°C
HNBR: -40°C to +150°C
Overall available range: -40°C to +180°C
Flow Performance
Orifice size: 20mm
Effective area: 162mm²
Flow rate: 72 L/min water @ 1 Bar ΔP
The large diaphragm and 20mm valve orifice provide substantially increased flow capacity compared with the smaller 3/8" and 1/2" PU220A models.
Unlike a conventional pressure-assisted diaphragm valve, the assisted-lift construction allows operation from zero positive pressure, making the PU220A-06H particularly useful for tank discharge, low-pressure systems, vacuum equipment and applications where differential pressure cannot always be guaranteed.
Coil & Electrical
Coil power: 18.5W
Insulation: Class H
Duty cycle: 100% ED
Electrical connection: DIN43650A
Protection: IP65 with connector fitted
The higher-power 18.5W Class H solenoid operator provides the increased magnetic force required for the PU220A-06H high-pressure configuration.
Voltage Options
DC options include:
✓ 12V DC
✓ 24V DC
✓ 48V DC
✓ 110V DC
✓ 220V DC
AC options include:
✓ 12V AC
✓ 24V AC
✓ 36V AC
✓ 48V AC
✓ 110V AC
✓ 230V AC 50/60Hz
Special Options
✓ NPT thread option
✓ FKM seal option
✓ EPDM seal option
✓ HNBR seal option
✓ Alternative coil voltages
✓ High-temperature configuration
✓ Optional timer control
Typical Applications
✓ Vacuum systems
✓ Zero-pressure water systems
✓ Tank and vessel drainage
✓ High-pressure water systems
✓ Pneumatic control systems
✓ Air and gas control
✓ Industrial water systems
✓ Cooling water systems
✓ Light oil control
✓ OEM machinery
✓ Industrial automation
✓ Process fluid control
High Flow 16 Bar Zero-Rated Design
The SHAKO PU220A-06H combines the high flow capability of a diaphragm valve with assisted-lift operation from zero positive pressure and increased positive pressure capability up to 16 Bar.
Its large 20mm orifice and 162mm² effective area provide substantially greater flow capacity than the smaller 3/8" and 1/2" PU220A models, making the PU220A-06H particularly suitable where increased flow and higher operating pressure are required through a compact 3/4" valve.
The mechanically assisted diaphragm allows the valve to operate where conventional pilot-operated valves may fail because insufficient pressure differential is available.
Combined with the higher-power 18.5W Class H operator, the PU220A-06H has been tested and proven for operation up to 16 Bar on both AC and DC supplies, providing an unusually wide operating envelope from vacuum through to high positive pressure.
The forged brass body and stainless steel internal components provide robust industrial construction, while NBR seals are supplied as standard. Optional FKM, EPDM and HNBR seals allow the valve to be configured for different compatible media and temperatures.
When fitted with the appropriate solenoid operator, the available media temperature range extends from -40°C with HNBR seals up to +180°C with FKM seals.
Ordering Information
Select the required seal material, thread and voltage before adding the valve to your basket.
Available options include:
✓ 3/4" BSP thread
✓ Optional 3/4" NPT thread
✓ NBR seals as standard
✓ FKM, EPDM or HNBR seal options
✓ High-temperature configurations
✓ AC and DC voltage options
The PU220A-06H is supplied with the higher-power 18.5W Class H solenoid operator and has been tested and proven for operation up to 16 Bar on both AC and DC configurations.
No ATEX option is offered with this 16 Bar configuration.
For fuels, oxygen, aggressive chemicals or unusual process media, contact us before ordering so that material compatibility and the correct valve configuration can be confirmed.
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