The taps for technical gases are supplied with refined adjustment head valve,
sealing in PTFE or EPDM.

Fixed hose connector in compliance with DIN 12898 regulation.

Handles in compliance with EN13792:2000 regulation and manufactured in ABS; acid-resistant material.

Threads in compliance with IS0228/1 regulation, B tolerance class.

Taps are built following the DIN 12918 norm.

The taps for oxygen are equipped with screw lubrificated with specific grease.

Maximum working pressure 10 Bar with PTFE sealing, 5 Bar with EPDM sealing.


Hereunder is shown the chart of technical gases taps output; these results were captured in the following conditions: temperature between 23° and 26°, measurement range of uncertainty +/-2%.
The air output Qn in normal volume (20°C and 1013 mBar), which flows through a tap with an absolute inlet pressure P1 constant with the absolute pressure variation P2, was calculated with the following formula:

		Where:  QN - is the flow in standard volume, in 1/mm;  Kv - the hydraulic factor of the tap, , in 1/mm;  TN - absolute temperature of reference, in ° K;  T1 - the absolute input temperature, in ° K;  P2 - the absolute downstream pressure, in Bar; P - the fall of pressure P1- P2', in Bar.
This formula is valid until the value of : P = P½  i.e. for  P2 = P½ The values of the outgoing pressure P2 smaller than P½ determine a constant flow that correspond to the sound flow Q*N calculated with the following expression: Where P1 is the absolute upstream pressure, in Bar.

The values obtained were indicated on the following charts where on the abscissas are shown the values of downstream pressures P2 in Bar (relative pressures), and on the ordinates the values of the outputs Qn in Nl/min.

Airflow characteristic of straight tap for technical gases, for laboratory furniture, art. 13000.1 with refined adjustment head valve. In order to determine the flow with a variety of gasses, multiply QN indicated on the chart by the factor derived from the following table.

		Flow multiplying factor derived from the chart for the taps designed to work with: Air 1 Oxygen 0,950 Nitrogen 1,02 Argon 0,852 Hydrogen 3,810 Helium 2,695 Acetylene 1,050
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Airflow characteristic of straight tap for technical gases, with 45° nozzle, for laboratory furniture, art. 13001.1 with refined adjustment head valve. In order to determine the flow with a variety of gasses, multiply QN indicated on the chart by the factor derived from the following table.

		Flow multiplying factor derived from the chart for the taps designed to work with: Air 1 Oxygen 0,950 Nitrogen 1,02 Argon 0,852 Hydrogen 3,810 Helium 2,695 Acetylene 1,050
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Airflow characteristic of straight tap for technical gases, with 90° nozzle, for laboratory furniture, art. 13002.1 with refined adjustment head valve. In order to determine the flow with a variety of gasses, multiply QN indicated on the chart by the factor derived from the following table.

		Flow multiplying factor derived from the chart for the taps designed to work with: Air 1 Oxygen 0,950 Nitrogen 1,02 Argon 0,852 Hydrogen 3,810 Helium 2,695 Acetylene 1,050
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Airflow characteristic of straight tap for technical gases with 45° nozzle, for laboratory furniture, art. 13003.1 with refined adjustment head valve. In order to determine the flow with a variety of gasses, multiply QN indicated on the chart by the factor derived from the following table.

		Flow multiplying factor derived from the chart for the taps designed to work with: Air 1 Oxygen 0,950 Nitrogen 1,02 Argon 0,852 Hydrogen 3,810 Helium 2,695 Acetylene 1,050
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Airflow characteristic of straight tap for technical gases, for laboratory furniture, art. 13310.0 with refined adjustment head valve. . In order to determine the flow with a variety of gasses, multiply QN indicated on the chart by the factor derived from the following table.

		Flow multiplying factor derived from the chart for the taps designed to work with: Air 1 Oxygen 0,950 Nitrogen 1,02 Argon 0,852 Hydrogen 3,810 Helium 2,695 Acetylene 1,050
		zoom

Hereunder is shown the chart of output of the Taps for Vacuum
These results were captured in the following conditions:
pump for vacuum with an output of 45 cubic meters per hour with an absolute pressure of 1 mBar and accumulation tank of 500 lt., temperature between 23° and 26°, range of measurement uncertainty of +/- 1%.
The output values Qv in cubic meters per hour on the axis of the abscissas and those of the corresponding pressures upstream of the tap Pv in mBar of vacuum (pressures relative negative) on the axis of the ordinates are shown in the following chart.


LOSS OF VACUUM ACCORDING TO AIR FLOW

		Tap for vacuum, for laboratory furniture, with refined adjustment head valve, art. 13000.1 - 13001.1 13002.1 - 13003.1 - 13310.0
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		1. Art. 13000.1 straight with hose connector 2. Art. 13001.1 with hose connector at 45° 3. Art. 13002.1 inclin.handle/hose conn. at 45° 4. Art. 13003.1 with hose connector at 90° 5. Art. 13310.0 for wall mounting

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