Table of Contents
Overview
Suitable for: | RITTER Drum-type Gas Meters and Bellows-type Gas Meters |
Gases: | non-toxic |
Set pressure: | Type 1: 50 mbar Type 2: 500 mbar Type 3: 1 bar |
Maximum flow rate: | see table below |
Material: | 1.4571 / 1.4301 |
Function: | spring loaded |
Operating temperature: (1) | -60 °C to +130 °C |
Installation position: | vertical |
Sealing: | Viton |

(1) Please mind the temperature range of the gas meter!
Max. flow rate: | at set pressure of: | |||||
Air (0 °C) | 27 | Nm3/h | Type 1: | 50 | mbar | |
CO₂ (0 °C) | 22 | Nm3/h | Type 2: | 500 | mbar | |
N (0 °C) | 50 | Nm3/h | Type 3: | 1 | bar |
Caution: If the pressure will exceed the above-mentioned set pressure, the safety valve will open. However, if the flow rate from the gas source exceeds the above-mentioned max. flow rate, the valve would not be able to vent the meter quickly enough.
This would built-up a pressure inside of the meter and may destroy the gas meter despite of the opened valve!
Specifications
Inlet | Outlet | Dimensions | Set pressure | Weight | ||||||
---|---|---|---|---|---|---|---|---|---|---|
E | d0 (mm) | D (mm) | l (mm) | A | H3 (mm) | H5 (mm) | SW (mm) | d0 (mm) | p (bar) | (kg) |
G ½ | 13 | 26 | 12 | free | 103 | 120 | 36 | 13 | 0.05 / 0.5 / 1 | 0.4 |
V 1.0 / Rev. 2024-07-03 / Subject to alterations.
The most recent version of this data-sheet can be found at …
https://www.ritter.de/en/data-sheets/safety-valve-free-blow-off/
https://www.ritter.de/en/data-sheets/safety-valve-free-blow-off/
Dr.-Ing. RITTER Apparatebau GmbH & Co. KG · Coloniastrasse 19-23 · D-44892 Bochum · Germany
For questions please contact mailbox@ritter.de or your local distribution partner (on our overview page)