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CATALOG2nd Edition 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 2 Service and installation must be performed by a trainedexperienced service technician. All products used with combustible gas must be installed and used strictly in accordance with the instructions of the Original Equipment Manufacturer OEM and with all applicable government codes and regulations e.g. plumbing mechanical and electrical codes and practices. Maxitrol products should be installed and operated in accordance with Maxitrol Safety Warning Instructions. Maxitrol Company is NOT responsible for any errors or omissions in reliance by anyone of any information set forth in this catalog without additional reference to local requirements and applicable ordinances or codes. Other worldwide approvals and certifications available upon inquiry. C US UA.TR.012-13 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 46 Pipe Sizes...................................38 to 2 threaded connections with NPT or ISO7-1 threads. Housing Material.......................325-3L 325-5L 325-7AL 325-9L aluminum. Mounting...................................Suitable for multi-positional mounting. If ball check vent limiting device is installed mount in an upright position only. NOTE All Maxitrol gas pressure regulators should be installed and operated in accordance with Maxitrol Safety Warning Instructions see GPR_CSA_2PSI_MI_EN.FR. Certifications...............................325-3L 325-5L 325-7AL 325-9L ANSI Z21.80CSA 6.22 Line Pressure Regulators. Gas Types...................................Suitable for natural manufactured mixed gases liquefied petroleum gases and LP gas-air mixtures. Maximum Inlet Pressure............2 psi 13.8 kPa Minimum Inlet Pressure.............1 psi 6.9 kPa Emergency Exposure Limits........65 psi 450 kPa inlet side only Maximum Individual Load.........Largest single appliance served by the regulator 325-3L 140000 Btuh 325-5L 425000 Btuh 325-7AL 1250000 Btuh 325-9L 2250000 Btuh Capacity.....................................Total load of multiple appliance combined 325-3L 38 12 250000 Btuh 325-5L 12 500000 Btuh 325-5L 34 1 600000 Btuh 325-7AL 1 14 1 12 1250000 Btuh 325-9L 1 12 2 2250000 Btuh NOTE Capacities are used to determine the maximum multiple appliance load. The largest single appliance served by the regulator should not exceed the maximum individual load specified above. Ambient Temperature Ranges.....-40 to 205F -40 to 96C Minimum Regulation..................Suitable for pilot flow applications. Circle P 0.15 CFH NG. Imblue Technology..................325-3L 325-5L 325-7AL 325-9L models may be ordered with Imblue Technology. Imblue Technology increases corrosion resistance and provides extra protection against the elements for regulators used in outdoor applications. Add suffix letter B to model number when ordering. Maxitrols 325-L Series line pressure regulators are for 2 psi piping systems. 325 Series regulators are for use on residential commercial and industrial applications. The 325 Series features a high leverage linkage assembly to deliver positive dead-end lockup. The regulators are capable of precise regulating control from full flow down to pilot flow. 325-3L Specifications 325-L SERIES Lever Acting Design for 2 psi Piping Systems 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 47 Model Pipe Size Outlet Pressure Set Point Operating Inlet Pressure 12 psi 3.4 kPa 34 psi 5.2 kPa 1 psi 6.9 kPa 1 12 psi 10.3 kPa 2 psi 13.8 kPa 325-3L 38 x 38 12 x 12 7.0 w.c. 1.7 kPa 145 4.1 200 5.7 250 7.1 250 7.1 250 7.1 10.0 w.c. 2.5 kPa 110 3.1 180 5.1 230 6.5 250 7.1 250 7.1 325-5L 12 x 12 7.0 w.c. 1.7 kPa 360 10.2 485 13.7 500 14.2 500 14.2 500 14.2 10.0 w.c. 2.5 kPa 275 7.8 475 13.5 500 14.2 500 14.2 500 14.2 325-5L 34 x 34 1 x 1 7.0 w.c. 1.7 kPa 370 10.5 520 14.7 600 17.0 600 17.0 600 17.0 10.0 w.c. 2.5 kPa 275 7.8 450 12.7 570 16.1 600 17.0 600 17.0 325-7AL 1 14 x 1 14 1 12 x 1 12 7.0 w.c. 1.7 kPa 750 21.2 1000 28.3 1250 35.4 1250 35.4 1250 35.4 10.0 w.c. 2.5 kPa 525 14.9 900 25.5 1125 31.9 1250 35.4 1250 35.4 325-9L 1 12 x 1 12 2 x 2 7.0 w.c. 1.7 kPa 1390 39.4 2080 58.9 2250 63.7 2250 63.7 2250 63.7 10.0 w.c. 2.5 kPa 1050 29.7 1660 47.0 2090 59.2 2250 63.7 2250 63.7 NOTE See pages 58-59 for Regulator Sizing Requirements and Examples. Outlet Pressure Range all models Certified Spring ............................. 7 to 11 w.c. 1.7 to 2.7 kPa NOTE See to pages 56-57 for complete Spring Selection Chart. Model Number 7.0 w.c. 1.7 kPa 12 psi 3.4 kPa 34 psi 5 kPa 325-3L 145 4.0 204 5.8 250 7.0 325-5L 400 11.3 550 15.6 670 19.0 325-7AL 815 23.1 1149 32.5 1405 39.8 325-9L 1360 38.5 2113 59.8 2557 72.4 Capacities expressed in CFH m3 h 0.64 sp gr gas Capacities Pressure Drop expressed in CFH m3 h 0.64 sp gr gas Spring Selection LINE REGULATORS C US 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 48 325-5L325-3L Model Pipe Size Vent Connection Swing Radius Dimensions A B C 325-3L 38 12 18 NPT 3 76 mm 3.5 89 mm 4.2 108 mm 3.9 98 mm 325-5L 12 34 1 38 NPT 4.9 124 mm 5.3 133 mm 5.9 149 mm 5.4 138 mm 325-7AL 1 14 1 12 12 NPT 6.1 156 mm 7.3 184 mm 8 203 mm 7 178 mm 325-9L 1 12 2 12 NPT 7.8 198 mm 9.4 239 mm 10.8 274 mm 9.1 231 mm NOTE Dimensions are maximums and to be used only as an aid in designing clearance for the valve. Actual production dimensions may vary somewhat from those shown. A A Dimensions 325-L SERIES Lever Acting Design for 2 psi Piping Systems 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 49 325-7AL 325-9L 1 Seal Cap 2 Stack 3 Top Housing 4 Rubber Valve 5 Valve Seat 6 Seal Cap Gasket 7 Adjusting Screw 8 Spring 9 Vent Connection 10 Diaphragm 11 Diaphragm Plates 12 Bottom Housing 1 2 3 4 5 9 10 11 6 7 8 12 NOTE Diagrams are graphical representations only and may differ from actual product. A A Lever Acting Design LINE REGULATORS Maxitrol Company 23555 Telegraph Rd. PO Box 2230 Southfield MI 48037-2230 GPR_MS_EN_10.2015 www.maxitrol.com 2015 Maxitrol Company All Rights Reserved