Select Page

Specifications for safety shut-off type 1800B

Safety shut-off type 1800B

The Elster safety shut-off type 1800B is intended for the medium pressure segment. These types of safety shut-offs have been used extensively in HAS installations.

In combination with the safety shut-off type USSA we have two different constructions in our product line therefore we are able to supply both safety devices for HAS sets. The Type 1800B is from the brand Elster-AMCO and is fitted as standard on a gas pressure regulator type 1800-B2. This type is only available for overpressure (OPSO).

Due to the modular design, this safety shut-off can also be combined with a dust filter. The filter / OPSO set is a combination of the following types of safety devices and the small dust filter type DF.

For technical data concerning the dust filter click here.


OPSO-1800B standard with internal impulse.

OPSO-1800B monitor with external impulse.

Combination with a filter (DF) version FOPSO-LP.

Maximum operating pressure

19.6 barg for the 3/4 “BSP-Tr screwed version.

8.6 barg for the 1 “BSP-Tr screwed and DN25 PN16 flanged version.

Connection sizes

Screwed: 3/4 “and 1” BSP-Tr.

Flanged: DN25 PN16.

Operating temperature

-20.0 – +60.0 °C.

Spring ranges

AMCO-OPSO = 35 -210 mbarg.

Applicable gases

Natural gas, LPG, propane, butane, air, nitrogen and other gases. Not suitable for oxygen O2.


For special versions that were available in the past, please contact us.