Fisher Pressure Reducing Regulator MR105



Type MR105 direct-operated pressure reducing regulator is a high capacity multi-purpose regulator. It provides simple, fast, and economical pressure control for various applications and is suitable for different flow media such as liquid, air, and gas. Type MR105 is ideal for applications where speed of response is critical, minimum differential pressure is a concern, or the process fluid is not free of impurities. Typical applications include lube oil, cooling water and pump bypass regulators.
A Position Monitor Bracket (PMB) is available for the Type MR105 to mount the 4300 Series Wireless Position Monitors to the travel indicator. The PMB mounting kit is compatible with both Topworx® 4310 and Fisher® 4320 Wireless Position Monitors.
(a) Valve body sizes DIN: DN25, DN40, DN50, DN80, DN100 mm.
Valve body sizes ANSI: NPS 1", 1.5", 2", 3", 4" inch.
(b) Pressure Classes DIN: PN 16, 25, 40 Bar.
ANSI: CL 150, 300, 600 # lbs.
(c) End connections: NPT, Raised-face flanged.
(d) Spring range:0.34-20.7 barg (5-300 psig).
(e) Max inlet pressure: 27.6 barg (400 psig).
(f) Max temp: 121 °C.
(g) Class VI Shutoff (soft seat).
(h) Stable.
(i) Fast response.
(j) Visual Travel Indicator.
(k) Able to Pass Large Flow Rates with Minimal Offset from Setpoint.
(l) Steel and Stainless Steel Constructions Meet API 614 Requirements. 
(m) Multiple Trim Materials Available.
(n) Sour gas capability.



Joachim Nyqvist
Joakim Karlsson
Jukka Haikala
Erik Rune


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