AS-Schneider Gauge Valves are designed for mounting to Pressure Gauges, Pressure Transmitters and Pressure Switches and are manufactured and tested according to DIN 16271. The type with 1/2 NPT connection (see below) as well as Gauge Valves with test flange are not mentioned in DIN 16271. According to DIN 16271 are the valves applicable for a max. allowable (Working) Pressure (PS) of 250 bar (3,626 psi) (brass) respectively 400 bar (5,801 psi) (carbon steel and stainless steel) and a max. allowable Temperature (TS) of 120°C (248°F) for liquids, gas or vapors. The max. allowable Temperature (TS) of 120°C (248°F) is considering the requirement that valves and measuring instruments need to be protected against heating by hot media. This can be achieved by syphons or by instrument impulse lines with sufficient length. However the AS-Schneider valves can be used for temperatures up to 300°C (572°F) - PTFE up to 232°C (450°F), Graphite up to 300°C (572°F).
 Datasheet |
AS-Schneider Gauge Valves are designed for mounting to Pressure Gauges, Pressure Transmitters and Pressure Switches and are manufactured and tested according to DIN 16271. Gauge Valves with test flange (see below) are not mentioned in DIN 16271. According to DIN 16271 are the valves applicable for a max. allowable (Working) Pressure (PS) of 250 bar (3,626 psi)(brass) respectively 400 bar (5,801 psi) (carbon steel and stainless steel) and a max. allowable Temperature (TS) of 120°C (248°F) for liquids, gas or vapors. The max. allowable Temperature (TS) of 120°C (248°F) is considering the requirement that valves and measuring instruments need to be protected against heating by hot media. This can be achieved by syphons or by instrument impulse lines with sufficient length. However the AS-Schneider valves can be used for temperatures up to 300°C (572°F) - PTFE up to 232°C (450°F), Graphite up to 300°C (572°F).
| Datasheet |
AS-Schneider E Series Gauge Valves GA Type are designed for mounting to Pressure Gauges, Pressure Transmitters and Pressure Switches. The GA type is provided with a vent / test port, as standard 1/4 NPT Female. A pipe plug is installed in this port by default.
| Datasheet |
Pressure Gauge Valves with Test Connection by Armaturenfabrik Franz Schneider GmbH + Co. KG
Pressure gauge valves with a test connection from Armaturenfabrik Franz Schneider GmbH + Co. KG are designed for direct mounting on pressure gauges, pressure transmitters and pressure switches. They feature an integrated test port that allows calibration and testing equipment to be connected directly at the measuring point without the need for additional adapters or external test manifolds. :contentReference[oaicite:7]{index=7}
These valves are typically manufactured to standards such as DIN 16271 (Form A, Form B) and as GA-type designs, offering robust construction, high pressure ratings and long service life. The integrated test connection simplifies on-site instrument verification and maintenance, improving operational safety and efficiency. :contentReference[oaicite:8]{index=8}
Frequently Asked Questions about Pressure Gauge Valves with Test Connection
What is a pressure gauge valve with test connection?
A pressure gauge valve with a test connection is an isolation valve that includes a dedicated port for attaching test or calibration equipment directly at the valve.
What are they used for?
They are used to isolate pressure instruments such as gauges and transmitters while providing a convenient interface for test and calibration devices.
What are the benefits of a test connection?
A test connection allows direct access for calibration and testing without the need for external adapters or separate test points, saving time and simplifying procedures.
Which standards do these valves follow?
Common standards include DIN 16271 Form A, Form B and GA-type designs that are suitable for industrial instrumentation service. :contentReference[oaicite:9]{index=9}
What pressure ranges are typical?
Standard versions are rated up to 400 bar, while some GA-type valves may be rated up to 420 bar or optionally up to 789 bar. :contentReference[oaicite:10]{index=10}
Which instruments can be connected?
These valves can be combined with pressure gauges, pressure transmitters, pressure switches and similar instruments that require occasional calibration or testing access.
How does the test connection support maintenance?
The integrated test port allows technicians to connect test equipment directly at the valve, enabling quicker calibration and reducing downtime during maintenance.
What materials are used?
Typical materials include brass, steel and stainless steel, offering strength, corrosion resistance and long service life. :contentReference[oaicite:11]{index=11}
Which media are they suitable for?
Depending on material and seal selection, they are suitable for use with gaseous and liquid media.
How does the test connection affect installation?
It adds functional access for test equipment without significantly increasing the valve’s footprint, supporting flexibility at the measurement point.
Are special variants available?
Variants may include additional approvals such as DVGW certification or versions suitable for oxygen or fugitive emissions, depending on the configuration. :contentReference[oaicite:12]{index=12}
How do I choose the right valve?
Consider the instrument type, operating pressure, medium, connection size and whether a test port is required for your application.
Can these valves be retrofitted?
Yes, provided the connection interfaces match the existing installation and space is available for the test port.
How do these valves improve safety?
They provide secure isolation and convenient test access, improving instrument reliability and process safety.