G-1 Air Maintenance Device - Model H1
Air Maintenance Device - Model H1
Globe's Model H-1 Air Pressure Maintenance Device is an automatic, field-adjustable device of the pressure reducing type. It is used to control the supervisory air pressure in a dry pipe sprinkler system, preaction system, or dry pilot line system of a dry pilot sprinkler actuated deluge or preaction valve. The H-1 is utilized in applications where there is a compressed air (or nitrogen) source which is at a higher pressure than the desired system pressure. Pressure sources include plant air supplies having their own automatic compressor controls, or nitrogen supplies having single-stage cylinder mounted pressure regulators.
The 1/2" globe valve is opened to admit air speedily to the dry pipe system. It is closed once the desired system air pressure has been established. As pressure drops on the system side of the 1/4" check valve, the regulator and metering orifice operate automatically to replace small losses of air which periodically occur in the system due to temperature or other system variations. The regulator and metering orifice limit the volume of air introduced to assure that the rate of air replacment is less than that from a discharging sprinkler so that system activation may take place.
- UL Listed
- FM Approved
- NYC-DOB MEA 335-91-M
- Physical Dimensions
9 11/16" x 7 3/4"
(246 mm X 197 mm)
|Pressure Range Output||15-50 PSI||1.05-3.51 kg/cm2|
|Pressure Differential||2 1/2 PSI||0.176 kg/cm2|
|From Air Supply||1/2" FEMALE NPT|
|To System||1/2" FEMALE NPT|
Note: Metric Conversions are Approximate.
|1||Name Plate||Aluminum||320592||8||1/4 Black Elbow||Steel||311201|
|2||1/2 Globe Valve||Brass||311601||9||1/4 Strainer||Brass||320587|
|3||1/2 X 3 1/2 Nipple||Steel||310305||10||Metering Orifice||Brass||320588|
|4||1/2 X 1/2 X 1/4 Tee||Steel||311314||11||Air Regulator||Aluminum||320590|
|5||1/4 Needle Valve||Brass||320586||12||1/4 Check Valve||Aluminum||320589|
|6||1/4 Union||Steel||311401||14||1/4 X 2 Nipple||Steel||310102|
|7||1/4 Close Nipple||Steel||310100|
When ordering please specify the following.
- Model Number
Globe agrees to repair or replace any of its own manufactured products found to be defective in material or workmanship for a period of one year from date of shipment.
For specific details of our warranty please refer to Price List Terms and Conditions of Sale (Our Price List).
Bulletin: H1 REV #1 Last Revised: July 2010