Flanged fire safety valve FIREBAG IVAR.TASF DN 65 – flanges with 4 holes, for gas installations
Code: TASF06500Product detailed description
Gas shut-off in case of fire
The IVAR.TASF is a safety valve with flanged connections that is fitted in the gas line upstream of the room or appliance to be protected. Inside is the FIREBAG® thermal fuse: a low-melting-point metal holds the closing element in the open position. When the ambient temperature reaches +100 °C (tolerance −5 K), the metal melts and a stainless steel spring shoots the closing element into the seat inside the valve. The gas flow is thus stopped completely and irreversibly – the valve cannot be reopened. It works independently, without any connection to a flame or temperature detection system.
DN 65 version
- flanges to DIN EN 1092-1, 4 holes Ø 18 mm on a Ø 145 mm bolt circle
- flange outside diameter 185 mm, face-to-face length 125 mm
- galvanised steel, max. operating pressure PN 5, operating temperature -20 to +80 °C
- thermal and time resistance +650 °C for 30 minutes to GT5 DIN 3586
- for gases to EN 437 and DVGW G260 – methane, butane, propane
- compliant with DIN 3586 and Regulation (EU) 2016/426
Installation and inspection
The valve is installed in horizontal or vertical pipework with the arrow on the body pointing in the direction of gas flow. The joint is made stress-free, with gaskets suited to the pressure, temperature and medium; thermal expansion of the pipe must be taken up by a compensator. The space in front of the valve must be kept clear so that heat can reach it in a fire; the valve must not be painted or insulated, and its location is marked with a warning sign. It is not installed outside buildings, where a temperature rise to 100 °C in a fire is not guaranteed. Design, installation and testing of the gas line are reserved for a qualified and authorised person.
Technical data
| Code | TASF06500 |
| Manufacturer | IVAR |
| Type | IVAR.TASF |
| Nominal size | DN 65 |
| Flanges | DIN EN 1092-1, 4 holes Ø 18 mm |
| Bolt circle D3 | 145 mm |
| Flange outside diameter D1 | 185 mm |
| Face-to-face length L | 125 mm |
| Max. operating pressure | PN 5 |
| Operating temperature | -20 to +80 °C |
| FIREBAG® trip temperature | +100 °C (−5 K) |
| Fire resistance | +650 °C / 30 min (GT5 DIN 3586) |
| Material | galvanised steel |
| Gases | methane, butane, propane (EN 437, DVGW G260) |
Frequently asked questions
Can the valve be reopened after it has tripped?
No. Once the trip temperature is exceeded, the spring presses the closing element permanently into the seat and the valve cannot be opened again. For this reason it cannot be function-tested without being destroyed – inspection is visual only.
At what temperature does FIREBAG shut off the gas?
At an ambient temperature of +100 °C with a tolerance of −5 K, i.e. from about 95 °C. Once closed, the valve then withstands +650 °C for 30 minutes.
Can the valve be installed in a vertical pipe?
Yes, it can be installed horizontally or vertically. The gas flow direction shown by the arrow on the body must be observed and the space in front of the valve kept clear.
How often should the valve be inspected?
Once a year if it is classed as fire safety equipment. A visual check confirms that it is not covered, painted or insulated, that the casing is intact, the flanged joint is tight and the warning sign is in place.
Additional parameters
| Category: | IVAR.TASK, IVAR.TASF, IVAR.G4 - fire safety fittings |
|---|---|
| Warranty: | 2 years |
| Product type: | fire-protection valve |
| Code: | TASF06500 |
| Manufacturer: | IVAR |
| Type: | IVAR.TASF |
| Nominal size: | DN 65 |
| Flanges: | DIN EN 1092-1, 4 holes Ø 18 mm |
| Bolt circle D3: | 145 mm |
| Flange outside diameter D1: | 185 mm |
| Face-to-face length L: | 125 mm |
| Max. operating pressure: | PN 5 |
| Operating temperature: | -20 to +80 °C |
| FIREBAG® trip temperature: | +100 °C (−5 K) |
| Fire resistance: | +650 °C / 30 min (GT5 DIN 3586) |
| Material: | galvanised steel |
| Gases: | methane, butane, propane (EN 437, DVGW G260) |
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