Gas Pressure Governors - P1: 60÷100
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ST846-A e ST846 A/SF P1 : 60 ÷ 100 mbar - P2 : 13,7 ÷ 30 mbar
COMPONENTS 1. Plastic cup 2. Regulation spring 3. Cover 4. Diaphragm 5. O-ring 6. Obturator 7. Bottom cover 8. Obturator pin 9. Filtering organ 10. Operating diaphragm 11. Diaphragm plate 12. Diaphragm fi xing nut 13. Setting screw TECHNICAL FEATURES Model: A and A/SF Spring Code: 847/1 P1: 60 ÷ 100 mbar P2: 13,7 ÷ 30 mbar Q min : see performances graph Q max : see performances graph Ref. Standard: EN 88-1 Type of gas: I°, II° and III° family Class: A Group: 2 Ambient Temp.: -15°C ÷ +60°C Connections: UNI ISO 7/1 Certifi cate CE No. 51BS3443
DESCRIPTION
Gas pressure governor series ST 846-A DN 15 - DN 20 - DN 25 This device, due to its accuracy regulation, it is particulary suitable for small systems and where the gas is distributed in a not uniform manner. ATTENTION!!! THE FOLLOWING OPERATIONS SHOULD BE DONE BY TECHNICAL SPECIALIST. INSTALLATION The Governor is normally placed before the gas meter. It should be installed having the arrow (printed on the governor body) pointing toward gas meter and in vertical position. Close to the outlet connection there is a pressure point (as per UNI 8978) where it is possible to verify the regulated outlet pressure. CALIBRATION Before starting the installation, make sure the supplied spring is adjusted to the desired set pressure. After removing the plastic cap (1), place the pressure regulator (13) to the minimum setting (fully unscrewed). Then start the system, controlling the pressure adjustment screw on the regulator itself until the desired pressure. OUT OF ORDER Unscrew the cap (1) and turn the setting screw (13) until its limit. CAPACITY’S COMPARATIVE SCALE  
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