AUTOMATIC FILLING VALVE
AUFV 100
AUFV 100
Combining three essential functions—pressure maintenance, ball valve, and check valve—in one unit, this valve simplifies installation and enhances reliability.
It’s an all-in-one solution for maintaining system pressure, safe shut-off, and preventing backflow into the potable water supply.
It’s an all-in-one solution for maintaining system pressure, safe shut-off, and preventing backflow into the potable water supply.
| Art. | IDENT | EAN | DN | PN | Sw [mm] |
Sw1 [mm] |
G [in] |
L [mm] |
L1 [mm] |
L2 [mm] |
H [mm] |
H1 [mm] |
| AUFV 100 | 1421601 | 3838963241737 | 15 | 16 | 30 | 14 | 1/2" | 166 | 62 | 103 | 134 | 98,5 |
An automatic filling valve is installed within the water supply piping of sealed heating systems, primarily to maintain stable system pressure at a predetermined value by automatically adding water when necessary.
During the filling or topping-up process, the water supply automatically stops once the desired pressure is reached. The desired pressure can be easily set before installation using the red knob located on top of the valve. The factory preset is set to 1,5 bar for convenience, but it can be adjusted to specific requirements within a range of 1.5 to 6 bar.
For enhanced control, the integrated ball valve allows for seamless shut-off of the filling valve, improving both convenience and safety. Additionally, the built-in check valve ensures that water from the heating system remain sseparate from the potable water supply, preserving water quality and safety.
The integrated pressure indicator enables easy monitoring of system pressure, providing peace of mind and precise control. Be cautious not to exceed the stated values on the pressure reducer scale, as doing so may damage the valve. After each adjustment to the outlet pressure, it is essential to open and close the regulated valve to ensure proper operation.
During the filling or topping-up process, the water supply automatically stops once the desired pressure is reached. The desired pressure can be easily set before installation using the red knob located on top of the valve. The factory preset is set to 1,5 bar for convenience, but it can be adjusted to specific requirements within a range of 1.5 to 6 bar.
For enhanced control, the integrated ball valve allows for seamless shut-off of the filling valve, improving both convenience and safety. Additionally, the built-in check valve ensures that water from the heating system remain sseparate from the potable water supply, preserving water quality and safety.
The integrated pressure indicator enables easy monitoring of system pressure, providing peace of mind and precise control. Be cautious not to exceed the stated values on the pressure reducer scale, as doing so may damage the valve. After each adjustment to the outlet pressure, it is essential to open and close the regulated valve to ensure proper operation.
Operating data
Medium:
Heating water purity in accordance to ÖNORM H 5195 and VDI- Standard 2035. The use of ethylene, or propylene glycol in a mixing ratio of 25- 50% is allowed. EPDM gaskets will be affected by mineral oils lubricants and thus lead to failure of the EPDM seals. Please refer to the manufacturer’s documentation when using ethylene glycol products for frost and corrosion protection.
Pressure gauge
The HERZ automatic filling valve features a pressure gauge with a 0-10 bar scale, allowing precise monitoring of the pressure within the heating system. The gauge can be installed on either side of the valve housing due to the two available 1/4" connectors, providing flexibility in installation.
Free turning nut
HERZ Automatic filling valve is designed to be connected to the system with a free-turning nut (which are supplied in the set). This allows easy service and the possibility of disconnecting the valve during the maintenance process.
Filter
The HERZ Automatic filling valve incorporates an integrated filter within a flat gasket seal, designed to provide dual functionality. For correct installation, the filter must be positioned on the upstream side, before the valve, at the starting point of the arrow marked on the valve body.
Ball valve
Ball valve features an integrated handle that requires a 14mm spanner for operation, ensuring that unauthorized personnel cannot easily manipulate the valve. This design provides security by restricting access to those with the proper tools, preventing accidental or unwanted adjustments.
Pressure setting
To set the pressure on the automatic filling valve, use the red adjustment knob located on top of the product. The knob allows for easy manual adjustment of the pressure in the heating circuit. To increase the pressure, turn the knob clockwise; to decrease the pressure, rotate it counterclockwise. The knob is designed for comfortable hand operation, enabling quick and straightforward adjustments without the need for additional tools.
Check valve
The built-in check valve ensures that water from the heating system remains separate from the potable water supply, preserving water quality and safety.
- Manometer scale: 0 - 10 bar
- Mesh perforatio: 0,3 mm
- Medium: water
- Maximum inlet pressure: 16 bar
- Outlet pressure range: 1,5 - 6 bar
- Factory setting: 1,5 bar
- Medium temperature range: 0,5 - 70 °C
- Pressure gauge connectors: 1,4" F (ISO 228-1)
- Connectors: external thread acc. to ISO 7-1 and ISO 228
Medium:
Heating water purity in accordance to ÖNORM H 5195 and VDI- Standard 2035. The use of ethylene, or propylene glycol in a mixing ratio of 25- 50% is allowed. EPDM gaskets will be affected by mineral oils lubricants and thus lead to failure of the EPDM seals. Please refer to the manufacturer’s documentation when using ethylene glycol products for frost and corrosion protection.
Pressure gauge
The HERZ automatic filling valve features a pressure gauge with a 0-10 bar scale, allowing precise monitoring of the pressure within the heating system. The gauge can be installed on either side of the valve housing due to the two available 1/4" connectors, providing flexibility in installation.
Free turning nut
HERZ Automatic filling valve is designed to be connected to the system with a free-turning nut (which are supplied in the set). This allows easy service and the possibility of disconnecting the valve during the maintenance process.
Filter
The HERZ Automatic filling valve incorporates an integrated filter within a flat gasket seal, designed to provide dual functionality. For correct installation, the filter must be positioned on the upstream side, before the valve, at the starting point of the arrow marked on the valve body.
Ball valve
Ball valve features an integrated handle that requires a 14mm spanner for operation, ensuring that unauthorized personnel cannot easily manipulate the valve. This design provides security by restricting access to those with the proper tools, preventing accidental or unwanted adjustments.
Pressure setting
To set the pressure on the automatic filling valve, use the red adjustment knob located on top of the product. The knob allows for easy manual adjustment of the pressure in the heating circuit. To increase the pressure, turn the knob clockwise; to decrease the pressure, rotate it counterclockwise. The knob is designed for comfortable hand operation, enabling quick and straightforward adjustments without the need for additional tools.
Check valve
The built-in check valve ensures that water from the heating system remains separate from the potable water supply, preserving water quality and safety.
