Part# 143-16-540-02 USE THE TECHNICAL LITERATURE BELOW TO DETERMINE THE SPECIFICATIONS YOU REQUIRE. OR CONTACT US VIA PHONE OR EMAIL FOR MORE OPTIONS AND ASSISTANCE. The Sensus QR-S is a mechanical damping device that enhances gas pressure regulator response to meet the instantaneous ignition requirements of high-efficiency gas equipment. Accessory / Part For: Sensus 243-8 Gas Pressure Regulator Sensus 243-12 Gas Pressure Regulator Also See: Sensus Orifices for 243-12 & 243-8 Regulators Sensus Spring for 243-8 and 243-12 Regulators Sensus 10 Degree Valve Pocket for 243-12 and 243-8 Regulators Sensus 30 Degree Valve Pocket for 243-12 and 243-8 Regulators Sensus 143-16-102-00 Clamping Plate for 243-12-2 Sensus Regulator Body for 243-8 and 243-12 Regulators Sensus 143-16-005-00 Cap and O-Ring for 243-12-2 and 243-8-2 Regulators Resources: Sensus QR-S Damping Device Model Datasheet Sensus QR-S Damping Device Installation Instructions