RV Series – Straight-Thru-Flow-Design

RV SERIES

STRAIGHT‐THRU‐FLOW DESIGN

RV81… – RV Series Straight-Thru-Flow Design

Maxitrol’s original Straight‐Thru‐Flow (STF) design regulators are non‐lockup type regulators for high capac­ities at low inlet pressures. The difference between STF design and other type regulators is the conical valve. The cone principal permits gas to flow straight through the regulator without changing direc­tions. Frictional flow resis­tance is reduced, resulting in greater capacity. An improved flow pattern provides accurate, sensitive regulation at extremely low pressure differ­en­tials. Typical appli­ca­tions include residential, commercial, and indus­trial gas‐fired appli­ances and equipment used on low or medium pressure gas supplies.

 

 

Specifications:

  • Pipe Sizes:
    • RV52, RV53, RV61, RV81, RV91, RV111: Rp ½ to Rp 3 threaded connec­tions according to ISO 7–1/EN10226-1
    • RV131: DN100 flanged connection according to ISO 7005–2 PN 16
  • Housing Material: 
    • RV52, RV53, RV61, RV81, RV91, RV111: Aluminum
    • RV131: Cast iron
  • Internal Components Material: Steel, aluminum, elastomer
  • Mounting: RV52, RV53, RV61 are suitable for multi‐positional mounting. If ball check vent limiting device is installed, mount in an upright position only. Other than upright position will result in a slight difference in outlet pressure. RV81, RV91, RV111, RV131 upright position only. Install with gas flowing as indicated by the arrow on bottom casting.
  • Construction and Design/Certifications: According to the Gas Appliances Regulation 2016/426/EU and EN 88–1
  • Gas Types: Suitable for gases of EN 437 gas family 1, 2, and 3
  • Maximum Inlet Pressure: 
    • RV52: 10 kPa
    • RV53, RV61, RV81, RV91, RV111: 20 kPa
    • RV131: 35kPa
  • Ambient Temperature Range: -15 °C to 80 °C

Dimensions:

Model Pipe Sizes Swing  Radius A B C D
RV52… Rp ½, Rp ¾ 91 mm 124 mm 32 mm 83 mm 81 mm
RV53… Rp ¾, Rp 1 99 mm 132 mm 33 mm 99 mm 95 mm
RV61… Rp 1, Rp 1 ¼ 122 mm 164 mm 41 mm 138 mm 111 mm
RV81… Rp 1 ¼, Rp 1 ½ 162 mm 213 mm 51 mm 178 mm 153 mm
RV91…  Rp 2 216 mm 275 mm   60 mm  232 mm  165 mm
RV91… Rp 2 ½ 212 mm  267 mm 62 mm   232 mm  181 mm
RV111… Rp 2 ½, Rp 3 284 mm  373 mm  89 mm 324 mm   229 mm
RV131… DN100 462 mm  574 mm  120 mm  457 mm 350 mm 

Dimensions:

Model Pipe Sizes Swing  Radius A B C D
RV52… Rp ½, Rp ¾ 91 mm 124 mm 32 mm 83 mm 81 mm
RV53… Rp ¾, Rp 1 99 mm 132 mm 33 mm 99 mm 95 mm
RV61… Rp 1, Rp 1 ¼ 122 mm 164 mm 41 mm 138 mm 111 mm
RV81… Rp 1 ¼, Rp 1 ½ 162 mm 213 mm 51 mm 178 mm 153 mm
RV91…  Rp 2 216 mm 275 mm   60 mm  232 mm  165 mm
RV91… Rp 2 ½ 212 mm  267 mm 62 mm   232 mm  181 mm
RV111… Rp 2 ½, Rp 3 284 mm  373 mm  89 mm 324 mm   229 mm
RV131… DN100 462 mm  574 mm  120 mm  457 mm 350 mm 
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GDR.GF-LT-EN-04.2018

Gas Pressure Regulators & Filters – Technical Literature

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