Description
Quick reply
The IZB WW safety valve is an element that protects heating and hydraulic installations against excessive pressure increases, available in ½" and ¾" versions. When the set pressure is exceeded (1.5; 2.5; 3; 6; 7 or 10 bar), it automatically drains excess water or air, protecting the devices against damage.
For whom
- Designers and installers of closed heating systems who must meet the requirements of regulations regarding the protection of installations against overpressure.
- Owners of boilers and heating water exchangers who want to effectively protect devices against uncontrolled pressure increases.
- Service companies that inspect and modernize central heating and refrigeration installations and need reliable safety valves.
- Users of installations working with water or a mixture of water and glycol (up to 50%), requiring stable and repeatable operation of the valve at a set opening pressure.
- Distributors of installation equipment who want to offer a full range of safety valves at pressures 1.5–10 bar with ½” and ¾” connections.
Application
- Closed heating systems with boilers, exchangers and heat buffers, requiring protection against pressure increases above permissible values.
- Refrigeration installations and other hydraulic systems in which the medium is water or water with glycol up to 50% and security requirements in accordance with standards apply.
- Systems in which it is necessary to quickly drain excess medium (water or air) after exceeding the set valve opening pressure.
- Installations with a nominal pressure of PN10, operating in the temperature range from 5 to 110°C.
The IZB WW safety valve is an accessory for heating and cooling installations, providing reliable protection against excessive pressure in a wide range of settings.
Features, description and technical data
Purpose and principle of operation
The IZB WW series safety valve is designed to protect heating and hydraulic installations against excessive pressure increases by automatically draining excess medium after exceeding the set opening pressure. By discharging water or air into the discharge pipe, it prevents damage to installations, fittings and devices, acting as basic protection in accordance with applicable regulations.
The IZB WW series includes safety valves with ½" and ¾" connections, available with set opening pressures: 1.5 bar, 2.5 bar, 3 bar, 6 bar, 7 bar and 10 bar, with a nominal operating pressure of PN10.
Scope of application and medium
- Intended use: closed heating and cooling systems.
- Working media: water, air and a mixture of water and glycol up to 50%.
- Operating temperature range: from 5°C to 110°C.
- Nominal pressure: PN10.
- Opening and closing tolerance: +20% / −20% relative to nominal pressure.
The IZB WW valve should not be used in steam installations or drinking water systems, unless the valve has an appropriate hygienic certificate.
Construction and materials
- Body: brass EN 12164 CW614N.
- Spring: EN 12270-1 steel.
- Seals: EPDM.
- Control knob: ABS plastic.
This design ensures resistance to typical operating conditions in water and heating installations and compatibility with water and glycol solutions up to 50%.
Models, pressures and connections
The IZB WW safety valve series includes the following combinations of opening pressures and connection diameters:
- IZB WW 1.5 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 2.5 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 3 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 6 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 7 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 10 bar – connections ½” × ½” and ¾” × ¾”.
All models maintain the same operating limit parameters (PN10, 5–110°C, glycol up to 50%) and opening and closing tolerance ±20%.
Dimensions and weight
The characteristic dimensions of IZB WW safety valves are as follows:
- ½” × ½” version: A = 18.5 mm, B = 25 mm, C = 63.5 mm, weight approx. 109 g.
- ¾” × ¾” version: A = 25 mm, B = 25 mm, C = 70 mm, weight approx. 109–110 g.
Compact dimensions facilitate the installation of the valve directly next to the boiler or exchanger, in accordance with the requirement of a maximum distance of 1 m from the heat source.
Assembly and installation recommendations
The IZB WW safety valve should be installed by qualified technical personnel in accordance with applicable standards and regulations. The valve should be installed in the direction of flow indicated by the arrow on the body, in a vertical or horizontal position - it must not be mounted upside down.
- Install the valve as close as possible to the heat source (boiler, exchanger), maximum 1 m from the device, on top of the generator or on the flow pipe.
- The pipeline connecting the boiler with the valve must not be interrupted or equipped with a shut-off device between the device and the safety valve.
- Seal threaded connections with PTFE tape or water installation paste, without welding or soldering near the valve.
- The diameter of the outlet pipe should be equal to or greater than the diameter of the valve inlet, not less than ¾" (DN20), ensuring free gravity drainage.
- Direct the drain downwards and end with a safety funnel or a gravity drain with an air break, so that the discharge of liquid is visible and does not cause negative pressure.
Safety, operation and maintenance
The IZB WW safety valve is an automatic device which, after proper selection and installation, does not require ongoing maintenance, but periodic inspections and tests are recommended.
- Every 3 months: visual inspection for leaks, corrosion and condition of the discharge pipe.
- Every 6 months: function test by slightly turning the valve knob.
- Every 5 years: replacement of the safety valve regardless of its visual condition.
If there is a leak at a pressure lower than the opening pressure, turn the knob several times to remove any contamination; if the leak persists, the valve should be replaced.
Additional safety rules include the prohibition of changing factory settings, the installation of any plugs or valves at the outlet, and the need to avoid situations in which the flow of hot water or steam could be directed towards the user.
IZB WW products are subject to the Pressure Equipment Directive 2014/68/EU and in accordance with Art. 4.3 (recognized engineering practice) are not CE marked.
Dambat – a trusted manufacturer of pumps and hydrotechnical equipment with quality certificates.[file:2]
FAQ
Where can you buy the IZB WW safety valve?
The IZB WW safety valve is available through a network of distributors and installation equipment stores cooperating with the manufacturer, as well as from authorized installers. Content compiled from general data. Contact us for details.[file:2]
Is IZB WW available for sale online?
IZB WW models are offered on the domestic market and may be available in selected online stores selling accessories for heating and plumbing installations. Content compiled from general data. Contact us for details.[file:2]
For which installations is it best to use the IZB WW safety valve?
The IZB WW valve is best suited for closed heating and cooling systems operating with water or water with glycol up to 50%, where protection against excessive pressure increases is required.
How to select the appropriate opening pressure of the IZB WW valve?
The IZB WW model (1.5; 2.5; 3; 6; 7 or 10 bar) should be selected by qualified technical personnel, taking into account the operating parameters of the installation, the permissible pressure of the devices and the requirements of standards and regulations.
How to properly install the IZB WW safety valve?
The valve should be installed vertically or horizontally (not upside down), in accordance with the flow direction arrow on the body, on the top of the generator or on the flow pipe at a distance of up to 1 m from the heat source and without shut-off fittings between the device and the valve.
How is the IZB WW valve maintained and tested?
The manufacturer recommends periodic visual inspections every 3 months, a function test by slightly turning the knob every 6 months, and replacing the valve every 5 years to maintain full effectiveness of the protection.
What is the warranty period for the IZB WW valve?
The IZB WW safety valve, as a product of the IBO brand, is covered by a 24-month manufacturer's warranty, in accordance with the general warranty conditions for this brand. [file:2] Content based on general data. Contact us for details.[file:2]
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- Dimensions: mm
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Quick reply
The IZB WW safety valve is an element that protects heating and hydraulic installations against excessive pressure increases, available in ½" and ¾" versions. When the set pressure is exceeded (1.5; 2.5; 3; 6; 7 or 10 bar), it automatically drains excess water or air, protecting the devices against damage.
For whom
- Designers and installers of closed heating systems who must meet the requirements of regulations regarding the protection of installations against overpressure.
- Owners of boilers and heating water exchangers who want to effectively protect devices against uncontrolled pressure increases.
- Service companies that inspect and modernize central heating and refrigeration installations and need reliable safety valves.
- Users of installations working with water or a mixture of water and glycol (up to 50%), requiring stable and repeatable operation of the valve at a set opening pressure.
- Distributors of installation equipment who want to offer a full range of safety valves at pressures 1.5–10 bar with ½” and ¾” connections.
Application
- Closed heating systems with boilers, exchangers and heat buffers, requiring protection against pressure increases above permissible values.
- Refrigeration installations and other hydraulic systems in which the medium is water or water with glycol up to 50% and security requirements in accordance with standards apply.
- Systems in which it is necessary to quickly drain excess medium (water or air) after exceeding the set valve opening pressure.
- Installations with a nominal pressure of PN10, operating in the temperature range from 5 to 110°C.
The IZB WW safety valve is an accessory for heating and cooling installations, providing reliable protection against excessive pressure in a wide range of settings.
Features, description and technical data
Purpose and principle of operation
The IZB WW series safety valve is designed to protect heating and hydraulic installations against excessive pressure increases by automatically draining excess medium after exceeding the set opening pressure. By discharging water or air into the discharge pipe, it prevents damage to installations, fittings and devices, acting as basic protection in accordance with applicable regulations.
The IZB WW series includes safety valves with ½" and ¾" connections, available with set opening pressures: 1.5 bar, 2.5 bar, 3 bar, 6 bar, 7 bar and 10 bar, with a nominal operating pressure of PN10.
Scope of application and medium
- Intended use: closed heating and cooling systems.
- Working media: water, air and a mixture of water and glycol up to 50%.
- Operating temperature range: from 5°C to 110°C.
- Nominal pressure: PN10.
- Opening and closing tolerance: +20% / −20% relative to nominal pressure.
The IZB WW valve should not be used in steam installations or drinking water systems, unless the valve has an appropriate hygienic certificate.
Construction and materials
- Body: brass EN 12164 CW614N.
- Spring: EN 12270-1 steel.
- Seals: EPDM.
- Control knob: ABS plastic.
This design ensures resistance to typical operating conditions in water and heating installations and compatibility with water and glycol solutions up to 50%.
Models, pressures and connections
The IZB WW safety valve series includes the following combinations of opening pressures and connection diameters:
- IZB WW 1.5 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 2.5 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 3 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 6 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 7 bar – connections ½” × ½” and ¾” × ¾”.
- IZB WW 10 bar – connections ½” × ½” and ¾” × ¾”.
All models maintain the same operating limit parameters (PN10, 5–110°C, glycol up to 50%) and opening and closing tolerance ±20%.
Dimensions and weight
The characteristic dimensions of IZB WW safety valves are as follows:
- ½” × ½” version: A = 18.5 mm, B = 25 mm, C = 63.5 mm, weight approx. 109 g.
- ¾” × ¾” version: A = 25 mm, B = 25 mm, C = 70 mm, weight approx. 109–110 g.
Compact dimensions facilitate the installation of the valve directly next to the boiler or exchanger, in accordance with the requirement of a maximum distance of 1 m from the heat source.
Assembly and installation recommendations
The IZB WW safety valve should be installed by qualified technical personnel in accordance with applicable standards and regulations. The valve should be installed in the direction of flow indicated by the arrow on the body, in a vertical or horizontal position - it must not be mounted upside down.
- Install the valve as close as possible to the heat source (boiler, exchanger), maximum 1 m from the device, on top of the generator or on the flow pipe.
- The pipeline connecting the boiler with the valve must not be interrupted or equipped with a shut-off device between the device and the safety valve.
- Seal threaded connections with PTFE tape or water installation paste, without welding or soldering near the valve.
- The diameter of the outlet pipe should be equal to or greater than the diameter of the valve inlet, not less than ¾" (DN20), ensuring free gravity drainage.
- Direct the drain downwards and end with a safety funnel or a gravity drain with an air break, so that the discharge of liquid is visible and does not cause negative pressure.
Safety, operation and maintenance
The IZB WW safety valve is an automatic device which, after proper selection and installation, does not require ongoing maintenance, but periodic inspections and tests are recommended.
- Every 3 months: visual inspection for leaks, corrosion and condition of the discharge pipe.
- Every 6 months: function test by slightly turning the valve knob.
- Every 5 years: replacement of the safety valve regardless of its visual condition.
If there is a leak at a pressure lower than the opening pressure, turn the knob several times to remove any contamination; if the leak persists, the valve should be replaced.
Additional safety rules include the prohibition of changing factory settings, the installation of any plugs or valves at the outlet, and the need to avoid situations in which the flow of hot water or steam could be directed towards the user.
IZB WW products are subject to the Pressure Equipment Directive 2014/68/EU and in accordance with Art. 4.3 (recognized engineering practice) are not CE marked.
Dambat – a trusted manufacturer of pumps and hydrotechnical equipment with quality certificates.[file:2]
FAQ
Where can you buy the IZB WW safety valve?
The IZB WW safety valve is available through a network of distributors and installation equipment stores cooperating with the manufacturer, as well as from authorized installers. Content compiled from general data. Contact us for details.[file:2]
Is IZB WW available for sale online?
IZB WW models are offered on the domestic market and may be available in selected online stores selling accessories for heating and plumbing installations. Content compiled from general data. Contact us for details.[file:2]
For which installations is it best to use the IZB WW safety valve?
The IZB WW valve is best suited for closed heating and cooling systems operating with water or water with glycol up to 50%, where protection against excessive pressure increases is required.
How to select the appropriate opening pressure of the IZB WW valve?
The IZB WW model (1.5; 2.5; 3; 6; 7 or 10 bar) should be selected by qualified technical personnel, taking into account the operating parameters of the installation, the permissible pressure of the devices and the requirements of standards and regulations.
How to properly install the IZB WW safety valve?
The valve should be installed vertically or horizontally (not upside down), in accordance with the flow direction arrow on the body, on the top of the generator or on the flow pipe at a distance of up to 1 m from the heat source and without shut-off fittings between the device and the valve.
How is the IZB WW valve maintained and tested?
The manufacturer recommends periodic visual inspections every 3 months, a function test by slightly turning the knob every 6 months, and replacing the valve every 5 years to maintain full effectiveness of the protection.
What is the warranty period for the IZB WW valve?
The IZB WW safety valve, as a product of the IBO brand, is covered by a 24-month manufacturer's warranty, in accordance with the general warranty conditions for this brand. [file:2] Content based on general data. Contact us for details.[file:2]
