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Buffer tank accessories are used for connection, protection, control and service work on buffer tanks within heating installations. This includes electric heating elements, immersion pockets, inlet combinations, pressure relief valves and other technical fittings.
At Hewa, you will find buffer tank accessories for heat pumps, heating systems, boilers and combined heating installations. When selecting the right accessory, check connection type, thread size, pressure rating, material, capacity, electrical connection and compatibility with the buffer tank or installation.
Brands
MB 3000 OWR1/230V - Electric heating element (3 kW)
Item no. 403230EAN 8721082877404
Price excl. VAT€ 115,66Price incl. VAT€ 139,95
In stock
Added
MB 3000 OWR1/230V AISI - Stainless steel electric heating element (3 kW)
Item no. 403231EAN 5905481955151
Price excl. VAT€ 123,93Price incl. VAT€ 149,95
In stock
Added
ALPS EXCLUSIVE AE-18061-CP - Circulation pump DN25 (180 mm, energy-efficient)
Item no. 392518EAN 8721225900327
Price excl. VAT€ 115,66Price incl. VAT€ 139,95
In stock
Added
ALPS EXCLUSIVE AE-13061-CP - Circulation pump DN25 (130 mm, energy-efficient)
Item no. 399999EAN 8721225900310
Price excl. VAT€ 115,66Price incl. VAT€ 139,95
In stock
Added
ALPS EXCLUSIVE AE-00303-SG - Boiler safety group
Item no. 390303EAN 8721225900037
Price excl. VAT€ 33,02Price incl. VAT€ 39,95
In stock
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Varem UR19231CS000000 - Expansion Vessel (18L)
Item no. 463118EAN 512239405
Price excl. VAT€ 50,70Price incl. VAT€ 61,35
Op nalevering
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Varem UR25231CS000000 - Expansion Vessel (25L)
Item no. 463125EAN 512239410
Price excl. VAT€ 67,60Price incl. VAT€ 81,80
Low stock
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Varem UR035231CS000000 - Expansion Vessel (35L)
Item no. 463135EAN 512239420
Price excl. VAT€ 84,50Price incl. VAT€ 102,25
Low stock
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Varem UR050271CS000000 - Expansion Vessel (50L)
Item no. 467150EAN 512239425
Price excl. VAT€ 112,70Price incl. VAT€ 136,37
Low stock
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OEG KSW - Differential controller with 4 TF/PT sensors
Item no. 340085EAN 8721225900716
Price excl. VAT€ 206,61Price incl. VAT€ 250,00
Op nalevering
Added
Zilmet Zilflex H UR0181809CS0000 - Expansion Vessel (18L)
Item no. 320918EAN 8721082877725
Price excl. VAT€ 53,70Price incl. VAT€ 64,98
Low stock
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Zilmet Zilflex H UR0252509CS0000 - Expansion Vessel (25L)
Item no. 320925EAN 1302002500
Price excl. VAT€ 62,30Price incl. VAT€ 75,38
Low stock
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Zilmet Zilflex H UR0353509CS0000 - Expansion Vessel (35L)
Item no. 320935EAN 8721082877732
Price excl. VAT€ 78,40Price incl. VAT€ 94,86
Low stock
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OEG 512200058 - Circulation pump DN25 (180 mm, energy-efficient)
Item no. 342518EAN 8721082877626
Price excl. VAT€ 132,19Price incl. VAT€ 159,95
In stock
Added
OEG 512200060 - Circulation pump DN25 (130 mm, energy-efficient)
Item no. 342513EAN 8721082877619
Price excl. VAT€ 132,19Price incl. VAT€ 159,95
Low stock
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Afriso 77581 - Boiler safety group for heating systems up to 100 kW
Item no. 067581EAN 4016203779381
Price excl. VAT€ 60,00Price incl. VAT€ 72,60
Low stock
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Afriso 77938 - Boiler safety group for heating systems up to 50 kW
Item no. 067938EAN 4016203779380
Price excl. VAT€ 39,63Price incl. VAT€ 47,95
Low stock
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OEG 512234155 - Automatic air vent with service valve G 1/2" M
Item no. 344155EAN 47241294483721
Price excl. VAT€ 7,40Price incl. VAT€ 8,95
In stock
Added
OEG - Safety relief valve 3 bar - Brass pressure valve (1/2" | 3/4")
Item no. 340170EAN 4055668025182
Price excl. VAT€ 8,22Price incl. VAT€ 9,95
In stock
Added
OEG 512230010 – Nickel-Plated Filling and Drain Valve G 1/2" M
Item no. 340010EAN 4038222198457
Price excl. VAT€ 8,22Price incl. VAT€ 9,95
In stock
Added
OEG 211205050 - Brass Thermowell TH/TC 150 (G 1/2" M)
Item no. 345050EAN 4038222198452
Price excl. VAT€ 9,88Price incl. VAT€ 11,95
In stock
Added
OEG 512200052 - Circulation pump DN20 (130 mm, energy-efficient)
Item no. 342013EAN 4055668004781
Price excl. VAT€ 128,06Price incl. VAT€ 154,95
Op nalevering
Added
Selecting buffer tank accessories
Buffer tank accessories are used to connect a buffer tank correctly, add electric heating, protect the installation or improve measurement and control. In heating installations, components such as electric heating elements, immersion pockets, pressure relief valves, safety groups and other technical fittings may be required to build a safe and service-friendly system.
The correct choice depends on the buffer tank type, connection, material, pressure rating, required function and technical design of the installation. Always check whether the component matches the thread size, maximum operating pressure, temperature class, power supply and mounting position.
Important when choosing buffer tank accessories
- Check connection type, thread size and mounting position
- Check pressure rating, temperature class and material version
- Select electric heating elements based on capacity and power supply
- Use immersion pockets for correct placement of sensors or thermostats
- Match safety components to operating pressure and system type
- Check compatibility with buffer tank, boiler, heat pump or heating system
- Have electrical components and safety fittings installed by a qualified installer
Accessories for installation, control and protection
Buffer tank accessories form the technical connection between the tank and the rest of the installation. For the basic system setup, also review buffer tanks for heating installations. For pressure protection, pressure relief valves for heating systems are relevant, while a boiler safety group for heating installations can be used within the correct system layout.
Electric heating elements can be used as an additional heat source or backup heater, provided the capacity, voltage and connection are suitable for the buffer tank. Immersion pockets are used to position sensors or control components at a suitable measuring point. Safety fittings must always match the operating pressure, flow direction and technical documentation of the installation.
Frequently asked questions about buffer tank accessories
What are buffer tank accessories used for?
Buffer tank accessories are used for connection, control, protection, measurement and service work on buffer tanks in heating installations. Examples include heating elements, immersion pockets and safety components.
When is an electric heating element used?
An electric heating element can be used as an additional heat source or backup heater. Always check capacity, power supply, connection, material version and suitability for the buffer tank.
What is an immersion pocket used for?
An immersion pocket is used to place a sensor, thermostat probe or measuring element in a suitable position inside the tank, without the measuring element having to come into direct contact with the water.
Which safety components are important for a buffer tank?
This depends on the system layout. Pressure relief valves, safety groups and other fittings may be required for pressure protection, control and safe operation of the heating system.
Who should install buffer tank accessories?
Installation must be carried out correctly and safely. Electrical components, pressure protection devices and technical fittings should therefore preferably be installed and checked by a qualified installer.