Pressure gauge with diaphragm seal. For use in the chemical, petrochemical and process industry. Glycerin filled pressure gauge Q 218AG, diameter 100mm. Membrane and dairy connection in stainless acid resistant steel. Connection from pressure gauge to diaphragm seal in stainless acid resistant steel. External or internal connection DN15, alternatively DN15 NPT. Available in various ranges. At temperatures above 65°C use of water syphon or mounting with capillary tube is recommended. See product sheet for more information on different models.