E-10 Dry Pipe Valve - Model “A” - 3”
Dry Pipe Valve Model A*, Flange/Flange 3" Size
The Globe Model A Dry Pipe Valve is the vital control unit in dry pipe automatic sprinkler systems, where super- visory air under pressure is used to prevent freezing that would certainly occur with ordinary wet pipe systems. The Dry Pipe Valve is the connecting link between the source of water supply and the automatic sprinklers, and must react promptly when it receives a signal from the protected area that a fire condition has developed and water is therefore quickly needed. This signal is generated by the opening of one or more sprinklers which causes a quick drop in system supervisory air pressure resulting in a loss of the differential force ratio.
The single clapper assembly design in the Globe Model A Dry Pipe Valve, provides a differential force ratio of approximately 6:1 between system air pressure and water supply pressure. Once the valve has operated, a special latch holds the clapper open until manually reset by qualified personnel.
The body of the Dry Pipe Valve is constructed of high tensile strength cast iron having considerable ductility to reduce damage in field handling.
All interior operating parts are machined from highly corrosive-resistant copper alloys, each having high strength and good wear resistance.
Rubber parts are of selective materials which have good abrasive resistance and long life expectancy in terms of resiliency.
NOTE: *Formerly known as Model D
- cULus Listed
- FM Approved
- Water Working Pressure Rating - 175 psi (12Bars)
- Factory tested hydrostatically to 350 psi (24Bars)
|Overall Length||14 1/2"|
|Center of Valve to Front||11"|
|Center of Valve to Back||9"|
|Center of Valve to Right||17"|
|Center of Valve to Left||6"|
|Weight of Value||106 lbs.|
Click image above for a detailed view of this product
|1||Cover Plate||Cast Iron||318501||12||Machine Screw||Bronze||318512|
|2||Cover Plate Gasket||Rubber||318502*||13||Pin Air Seat Gasket||Rubber||318513*|
|3||Cover Plate Stud||Steel||318503||14||Water Seal Gasket||Rubber||318514*|
|5||Latch||Cast Iron||318505||16||Clapper Hinge Pin||Brass||318516|
|6||Clapper Arm Assembly||-------||318506||17||Cotter Pin||Brass||318517|
|7||Clapper Arm Hinge Pin||Monel||318507||18||Latch Pin||Brass||318518|
|8||Hinge Pin Plug||Brass||318508||19||Retaining Washer||Brass||318526|
|9||Clapper Assembly||-----||318509||20||Seat Ring||Bronze||318522|
* Available as a kit only - P/N 318519
Refer to Globe's Dry Pipe Valve Installation and Maintenance Guide (Bulletin D.P.V.I.M.) for trim set-up,
installation instructions, and maintenance.
When ordering please specify the following.
- Model Number
- Factory Trimmed and Leak Tested Hydrostatically or Loose Trim for Customer Installation.
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: DPV-D Last Revised: February 2007 Revision: 3