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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 14 Pipe Sizes...................................... 38 to 2 threaded connections with NPT or ISO7-1 threads. Housing Material.......................... 325-3 325-5 325-7A 325-9 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_MI_EN.ES or GPR_CSA_MI_EN.FR. Certifications................................ 325-3 325-5 ANSI Z21.18CSA 6.3 Gas Appliance Pressure Regulators. Gas Types...................................... Suitable for natural manufactured mixed gases liquefied petroleum gases and LP gas-air mixtures. Maximum Inlet Pressure............... CSA Certified 325-3 325-5 2 psi 13.8 kPa 5 psi 34.5 kPa Maxitrol Tested 325-3 325-5 325-7A 325-9 10 psi 69 kPa With Vent Limiter 12A09 12A39 or 12A49 Installed 325-3 325-5 325-7A 325-9 5 psi 34.5 kPa - Natural 2 psi 13.8 kPa - LP Emergency Exposure Limits ...........65 psi 450 kPa inlet side only Maximum Individual Load............ Largest single appliance served by the regulator 325-3 100000 Btuh 325-5 325000 Btuh 325-7A 1250000 Btuh 325-9 2250000 Btuh Capacity.......................................Total load of multiple appliances combined 325-3 150000 Btuh 325-5 325000 Btuh 325-7A 1250000 Btuh 325-9 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 None 1.5 CFH NG. Imblue Technology 325-3 325-5 325-7A 325-9 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 Series pounds to inches regulators are for use on residential commercial and industrial applications. The 325 Series features a high leverage valve linkage assembly to deliver positive dead-end lockup. The regulators are capable of precise control from full flow down to pilot flow. 325 SERIES Lever Acting Design 325-3 Specifications 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 15 Capacities expressed in CFH m3 h 0.64 sp gr gas Model Pipe Size Outlet Pressure Set Point CSA MAX CFH Operating Inlet Pressure 0.5 psi 3.4 kPa 0.75 psi 5.2 kPa 1 psi 6.9 kPa 2 psi 13.8 kPa 5 psi 34.5 kPa 10 psi 69.0 kPa 325-3 38 x 38 12 x 12 4.0 w.c. 1.0 kPa 150 4.2 160 4.5 190 5.4 220 6.2 220 6.2 300 8.5 320 9.1 7.0 w.c. 1.7 kPa 150 4.2 120 3.4 150 4.2 180 5.1 220 6.2 290 8.2 320 9.1 10.0 w.c. 2.5 kPa 150 4.2 100 2.8 120 3.4 150 4.2 220 6.2 280 7.9 320 9.1 325-5 12 x 12 34 x 34 1 x 1 4.0 w.c. 1.0 kPa 325 9.2 340 9.6 390 11.0 450 12.7 560 15.9 680 19.3 750 21.2 7.0 w.c. 1.7 kPa 325 9.2 260 7.4 360 10.2 410 11.6 530 15.0 680 19.3 750 21.2 10.0 w.c. 2.5 kPa 325 9.2 240 6.8 320 9.1 360 10.2 500 8.5 650 18.4 750 21.2 325-7A 1 14 x 1 14 1 12 x 1 12 4.0 w.c. 1.0 kPa 850 24.0 1060 30.0 1190 33.7 1600 45.3 2090 59.2 2190 62.0 7.0 w.c. 1.7 kPa 780 22.0 950 26.9 1060 30.0 1500 42.5 1860 52.7 2060 58.3 10.0 w.c. 2.5 kPa 650 18.4 860 24.4 990 28.0 1300 36.8 1620 45.9 2060 58.3 325-9 1 12 x 1 12 2 x 2 4.0 w.c. 1.0 kPa 1815 51.4 2075 58.8 2250 63.7 2660 75.3 3550 100.5 3750 106.2 7.0 w.c. 1.7 kPa 1430 40.5 1660 47.0 1960 55.5 2570 72.8 3420 96.8 3750 106.2 10.0 w.c. 2.5 kPa 1275 36.1 1450 41.1 1720 48.7 2160 61.2 3150 89.2 3750 106.2 Model Number CSA Certified Standard Spring Other Springs Available 2 psi 13.8 kPa 5 psi 34.5 kPa 325-3 5 to 9 1.25 to 2.25 Plated 7 to 11 1.7 to 2.7 White 6 to 10 1.5 to 2.5 Plated 7 to 11 1.7 to 2.7 White 4 to 12 1.0 to 3.0 Violet 2 to 6 0.5 to 1.5 Plated 10 to 22 2.5 to 5.5 Red 15 to 30 3.7 to 7.5 Yellow 1 to 2 psi 6.9 to 13.9 Tagged 325-5 5 to 9 1.25 to 2.25 Plated 7 to 11 1.7 to 2.7 White 6 to 10 1.5 to 2.5 Plated 7 to 11 1.7 to 2.7 White 4 to 12 1.0 to 3.0 Violet 2 to 6 0.5 to 1.5 Plated 10 to 22 2.5 to 5.5 Red 15 to 30 3.7 to 7.5 Yellow 1 to 2 psi 6.9 to 13.9 Tagged 325-7A 4 to 12 1.0 to 3.0 Violet 2 to 5 0.5 to 1.5 Plated 10 to 22 2.5 to 5.5 Red 15 to 30 3.7 to 7.5 Yellow 20 to 42 5.0 to 10.4 Black 325-9 4 to 12 1.0 to 3.0 Violet 2 to 5 0.5 to 1.5 Plated 10 to 22 2.5 to 5.5 Red 15 to 30 3.7 to 7.5 Yellow 20 to 42 5.0 to 10.4 Black NOTE See pages 56-57 for complete Spring Selection Chart. NOTE Maximum Individual Load 325-3B is 100 CFH 2.8 m3 h 325-5B is 325 CFH 9.2 m3 h 325-7AB is 1250 CFH 35.4 m3 h 325-9B is 2250 CFH 63.7. Approval based on use as an appliance regulator. Set points in CFH 325-3B 50 325-5B 150 325-7AB 500 325-9B1000. See pages 58-59 for Regulator Sizing Requirements and Examples. Model 7.0 w.c. 1.7 kPa 0.5 psi 3.4 kPa 0.75 psi 5.2 kPa 1 psi 6.9 kPa 2 psi 13.8 kPa 325-3 145 4.0 204 5.8 250 7.0 289 8.2 325-5 400 11.3 550 15.6 670 19.0 770 21.8 325-7A 815 23.1 1149 32.5 1405 39.8 1624 46.0 2305 65.3 325-9 1360 38.5 2113 59.8 2557 72.4 2949 83.5 4059 114.8 Spring Selection Chart inches w.c. kPa unless noted Capacities based on 1 w.c. pressure drop from set point Pressure Drop 0.64 sp gr gas expressed in CFH m3 h for system pressure drop calculations APPLIANCE REGULATORS C US UA.TR.012-13 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 16 325-3 325-5 Model Pipe Size Vent Connection Swing Radius Dimensions A B C 325-3 38 12 18 NPT 3 76 mm 3.5 89 mm 4.2 108 mm 3.9 98 mm 325-5 12 34 1 38 NPT 4.9 124 mm 5.3 133 mm 5.9 149 mm 5.4 138 mm 325-7A 1 14 1 12 12 NPT 6.1 156 mm 7.3 184 mm 8 203 mm 7 178 mm 325-9 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 325 SERIES Lever Acting Design Dimensions 2015 Maxitrol Company. All Rights Reserved. DRAFT 09.18.2013 17 325-7A 325-9 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 2 3 9 11 4 6 7 8 5 10 12 NOTE Diagrams are graphical representations only and may differ from actual product. A Lever Acting Design APPLIANCE REGULATORS 1 A 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