Feed (Reducing) Valves


Application

Low and medium pressure hot water systems.
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Features & Benefits

Features and Benefits

  • Pressure compensated to give constant outlet pressure regardless of inlet pressure.
  • Silicon rubber diaphragm and washer - no heat loop required.
  • N.Z. forged, high quality, corrosion resistant DR brass body
  • Machined, assembled and 100% tested in N.Z.
  • One-piece forged brass fork with no water paths - no leaks!

Video




Specifications

Specifications


Inlet:  15mm, 1/2" BSP (male) Outlet: 20mm, 3/4" BSP (male) Length: 138mm  
  • Set pressures
    • FV3.7  -  35 kPa [5.5psi]
    • FV7.6  -  65 kPa [10.9psi]
    • FV12.2  -  110 kPa [17.4psi]
  • Adjustable pressure range
    • FV3.7 & FV7.6  -  15 to 100 kPa [2 to 14psi]
    • FV12.2  -  50 to 150 kPa [7 to 22psi]
  • Maximum Inlet Pressure: 2000 kPa [290psi].
  • Maximum Inlet Temperature:
    • Plastic Cap: 40˚C
    • Brass Cap: 80˚C - hot water valve


Flow Chart




Sectional View


pressure_reducing

Product Codes

<table width="100%" border="1" cellspacing="0" cellpadding="2" bgcolor="#EEEEEE"> <tbody> <tr> <td valign="top" width="31%">FV3.7</td> <td valign="top" width="69%"></td> </tr> <tr> <td valign="top" width="31%">FV7.6</td> <td valign="top" width="69%"></td> </tr> <tr> <td valign="top" width="31%">FV12.2</td> <td valign="top" width="69%"></td> </tr> <tr> <td valign="top" width="31%">MP7.6</td> <td valign="top" width="69%">Matched Pair (FV7.6 &amp; RV7.6)</td> </tr> <tr> <td valign="top" width="31%">MP12.2</td> <td valign="top" width="69%">Matched Pair (FV12.2 &amp; RV12.2)</td> </tr> <tr> <td valign="top" width="31%">4in1 3.7</td> <td valign="top" width="69%">4 in 1 (FV3.7 &amp; FS15)</td> </tr> <tr> <td valign="top" width="31%">4in1 7.6</td> <td valign="top" width="69%">4 in 1 (FV7.6 &amp; FS15)</td> </tr> <tr> <td valign="top" width="31%">4in1 12.2</td> <td valign="top" width="69%">4 in 1 (FV12.2 &amp; FS15)</td> </tr> <tr> <td valign="top" width="31%">HFV3.7</td> <td valign="top" width="69%">Hot Water Feed Valve (Brass Cap)</td> </tr> <tr> <td valign="top" width="31%">HFV7.6</td> <td valign="top" width="69%">Hot Water Feed Valve (Brass Cap)</td> </tr> <tr> <td valign="top" width="31%">HFV12.2</td> <td valign="top" width="69%">Hot Water Feed Valve (Brass Cap)</td> </tr> </tbody> </table>

Installation & Servicing

Installation


  • Refer to Technical Area for installation guide.
  • Can be installed in any orientation.
  • Do NOT install in the ground.
  • Do NOT apply heat near valve during installation.
  • Valve may require adjustment on site. To increase pressure turn adjusting screw clockwise (1 ½ turns = 1 metre head).
  • Valve must be either valve vented or open vented.
  • For increased flow rates or inlet pressure below 200 kPa [29psi], two valves in parallel may be required, doubling the flow.
  • Where two valves are in parallel, each must have isolating valves on inlet.
 

Standards

Standards


  • Complies with NZ Building Code G12 (2001)
  • Complies with NZS 4608:1992
  • Patent No. 504476