Brochure

DRAFT 09.18.2013

Pipe Sizes ..................................... 3/8” thru 1” threaded connections with NPT or ISO7-1 threads.

Housing Material ......................... SR400, SR500, SR600: aluminum.

Mounting ..................................... 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 SELMMRSR_MI_EN.FR.ES).

Certications ............................... SR400, SR500, SR600: ANSI Z21.18/CSA 6.3 Gas Appliance Pressure Regulators

(except sufx -2 models).

Gas Types ..................................... Suitable for natural, manufactured, mixed gases, liqueed petroleum gases, and LP gas-air

mixtures.

Maximum Inlet Pressure .............. CSA Certied: 1/2 psi (3.4 kPa)

Maxitrol Tested: 1 psi (6.9 kPa)

Flow Rates .................................... up to 1,000 CFH (28.32 m

/h)

Emergency Exposure Limits .......... 2.5 psi (17.2 kPa)

Ambient Temperature Ranges ....... -40 to 175°F (-40 to 79°C)

Minimum Regulation .................... SR400, SR500: 5 CFH; SR600: 60 CFH

NOTE: SR400-2, SR500-2, SR600-2 models are designed primarily for LP gas applications.

NOTE: All models may be powered by a 24 volt AC transformer. When the coil is energized, the appliance is at low re.

When the coil is de-energized, it is high re. Continuous regulation is maintained to hold the electrically set outlet

pressure constant.

An ideal replacement for dual manifold systems, the SR Series

combines gas pressure regulating and ame staging in a single

unit. Applications include direct-red heaters with two speed

fans, hi-lo control for outdoor heaters, LP natural gas switchover

and industrial processing.

SR400

SR SERIES

2 Stage Design

Specications