Dixon AVAPR250F-I User manual

Brand
Dixon
Model
AVAPR250F-I
Type
User manual

This manual is also suitable for

Dixon AVAPR250F-I is a pressure restricting valve designed for use in Class I or III Standpipe Systems as defined by NFPA 14. It can be installed inline or at the Hose Outlet and serves to restrict high pressure at the hose outlet under flow conditions only. This valve is designed to restrict inlet pressures from a maximum rated inlet pressure of 175 PSI, down to prescribed levels in accordance with NPFA 14.

It features a restraining collar and yoke with a removable pin that may be removed only if specified by the local fire department to provide higher discharge pressures.

The valve comes with a chart that helps determine the proper set number for the desired outlet pressure. Once the set number is determined, the control collar is rotated until the set number lines up with the pin, and the control collar lock screw is tightened.

Dixon AVAPR250F-I is a pressure restricting valve designed for use in Class I or III Standpipe Systems as defined by NFPA 14. It can be installed inline or at the Hose Outlet and serves to restrict high pressure at the hose outlet under flow conditions only. This valve is designed to restrict inlet pressures from a maximum rated inlet pressure of 175 PSI, down to prescribed levels in accordance with NPFA 14.

It features a restraining collar and yoke with a removable pin that may be removed only if specified by the local fire department to provide higher discharge pressures.

The valve comes with a chart that helps determine the proper set number for the desired outlet pressure. Once the set number is determined, the control collar is rotated until the set number lines up with the pin, and the control collar lock screw is tightened.

Pressure Restricting Valves
Model AVAPR250F-I, 2½" x 2½", Female x Male
Combination Angle Hose & Pressure Restricting Valve
Intended Use
This pressure restricting valve should be installed per NFPA 14, Class I or III Standpipe System inline or Hose Outlet. This device
serves as a means of restricting existing high pressure at the hose outlet under ow conditions only. This valve is designed to restrict
inlet pressures from a maximum rated inlet pressure of 175 PSI, down to prescribed levels in accordance with NPFA 14. This device
features a restraining collar and yoke with removable pin that may be removed only if so specied by the local re department to
provide higher discharge pressures.
Acceptance Testing
Upon completion of system installation, each pressure restricting valve shall be tested in accordance with NFPA 14 to verify that inlet
and outlet pressures at the valve are in accordance with design and that the valve is operating correctly.
Valve Maintenance
A visual inspection of the valve body, threads and collar assembly should be conducted prior to installation and periodically to insure
there is no physical damage. The valve should also be tested and maintained in accordance with NFPA 25. If the internal parts
become damaged, the valve should be replaced with a functional equivalent.
Setting the Valve
1. Determine proper set number from chart.
2. Loosen lock screw (B).
3. Rotate control collar (C) until set number lines up with pin (A) being sure bottom of control collar (C) is against pin (A).
4. Tighten control collar lock screw (B). Valve is now ready for use.
5. To open the valve fully, pull the release pin (E) and ip the restraining yoke (D) out of the way.
6. Test after installation and periodically in accordance with NFPA 13 and/or 14, whichever is applicable, and NFPA 25.
Sheet 1 of 2 Rev. Ø
Installation Instructions
E.C. Number: 10234, Dated: October 15, 2019Drawing No. 4600701136
E.C. Number: 10234, Dated: October 15, 2019
Dixon
®
325 Arbor Court
Winchester, VA 22602 USA
540-535-2181
dixonvalve.com
Readings based on ow held to 250 GPM and outlet pressures of 100, 110, 120, and 150 PSI.
Example: Inlet Pressure 120 PSI, Discharge Pressure 100 PSI - the Set Number should be 15
Sheet 2 of 2 Rev. Ø
Model AVAPRF250-I
Setting at 250 GPM
AVAPRF250-I
Pressure Loss Across Valve at 250 GPM
Drawing No. 4600701136
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Dixon AVAPR250F-I User manual

Brand
Dixon
Model
AVAPR250F-I
Type
User manual
This manual is also suitable for

Dixon AVAPR250F-I is a pressure restricting valve designed for use in Class I or III Standpipe Systems as defined by NFPA 14. It can be installed inline or at the Hose Outlet and serves to restrict high pressure at the hose outlet under flow conditions only. This valve is designed to restrict inlet pressures from a maximum rated inlet pressure of 175 PSI, down to prescribed levels in accordance with NPFA 14.

It features a restraining collar and yoke with a removable pin that may be removed only if specified by the local fire department to provide higher discharge pressures.

The valve comes with a chart that helps determine the proper set number for the desired outlet pressure. Once the set number is determined, the control collar is rotated until the set number lines up with the pin, and the control collar lock screw is tightened.

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