CATALOG 2nd Edition
DRAFT 09.18.2013 Service and installation must be performed by a trained/experienced 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.
DRAFT 09.18.2013 SR SERIES 2 Stage Design A n ideal replacement for dual manifold systems, the SR Series combines gas pressure regulating and flame staging in a single unit. Applications include direct-fired heaters with two speed fans, hi-lo control for outdoor heaters, LP natural gas switchover and industrial processing. SR400 Specifications Pipe Sizes...................................... 3/8” thru 1” threaded connections with NPT or ISO7-1 threads. Housing Material..........................
DRAFT 09.18.2013 APPLIANCE REGULATORS ® C US Capacities and Pressure Drop: inches w.c. (kPa) Model Number Flow Rate - CFH (m3/h) Pipe Size CSA MAX 100 (2.83) 200 (5.66) 300 (8.50) 400 (11.33) 500 (14.16) 600 (16.99) 750 (21.24) 1000 (28.32) 3/8” x 3/8” 150 (4.2) 0.33 (0.08) 1.30 (0.32) --- --- --- --- --- --- 1/2” x 1/2” 170 (4.8) 0.27 (0.07) 1.10 (0.27) --- --- --- --- --- --- 1/2” x 1/2” 360 (10.2) 0.08 (0.02) 0.30 (0.08) 0.68 (0.17) 1.20 (0.
DRAFT 09.18.2013 SR SERIES 2 Stage Design Dimensions Model Pipe Size Vent Connection SR400 3/8”, 1/2” SR500 SR600 Dimensions A B C D 1/8” NPT, 12A06 vent limiting device installed. 4” (102 mm) 2” (51 mm) 2.2” (56 mm) 1” (25 mm) 1/2”, 3/4” 1/8” NPT, 12A06 vent limiting device installed. 5.3” (135 mm) 3.2” (81 mm) 3.4” (86 mm) 1.2” (30 mm) 3/4”, 1” 1/8” NPT, 12A06 vent limiting device installed. 7” (178 mm) 3.9” (99 mm) 4” (102 mm) 1.
DRAFT 09.18.2013 APPLIANCE REGULATORS 2 Stage Design 1 2 7 8 9 3 4 5 10 11 12 6 13 1 Seal Cap 2 Adjusting Screw 3 Top Housing 4 Regulating Diaphragm 5 Stem & Valve 6 Bottom Housing 7 Seal Cap Gasket 8 Stack 9 Spring 10 Diaphragm Plates 11 Balancing Diaphragm 12 Sensing Tube 13 Bottom Plate NOTE: Diagrams are graphical representations only and may differ from actual product. © 2015 Maxitrol Company. All Rights Reserved.
Maxitrol Company 23555 Telegraph Rd., PO Box 2230 Southfield, MI 48037-2230 GPR_MS_EN_10.2015 www.maxitrol.
