Flow Control Valves

MR10-20 — Manual Rotary Flow Control Valve
  Selection guide - similar valves.
  PDF file of this page.
  STP file for MR10-20.
  Request a quote.

MR10-20 Valve

MR10-20 Valve symbol

A manually-adjustable variable orifice, offering linear control with adaptability to a variety
of adjustment operators (ordered separately).

In extreme clockwise position, the MR10-20 is fully closed (normally closed).
Counterclockwise rotation of 180° gradually increases flow. The first 10° (approx.) of
rotation is deadband. The last 15° of rotation increases flow very little. For a normally-
open version with counterclockwise rotation gradually decreasing flow, consult factory.
NOTE: Use of the valve in the 1 to 2 direction is not recommended if the plastic knob
operator is used. Because of the low effort (internal bearing used) adjustment, flow forces
may cause setting change. The valve will operate 1 to 2 well with handle-type operator

• Ten-position detent or infinite friction lock options.
• Good linearity in three flow range options.
• Adaptable to a variety of operators.
• Optional lock-down bracket.
• Heavy-duty construction.
• Low effort adjustment.
• Industry common cavity.

Operating Pressure: 241 bar (3500 psi)
Flow Delivered at 5.5 bar (80 psi) Differential:
   Model Code A: 49 lpm (13 gpm)
   Model Code B: 34 lpm (9 gpm)
   Model Code C: 22 lpm (6 gpm)
Internal Leakage in "Off" Position: at 207 bar (3000 psi):
   164 cc/minute (10 cu. in./minute)
Torque Required to Change Position Under Load: 3.9 Nm (35 inch-pounds)
   at 7 bar (100 psi); 5.1 Nm (45 inch-pounds) at 240 bar (3500 psi)
Temperature: -40° to 100°C (-40° to 212°F) with Buna seals;
   -26° to 204°C (-15° to 400°F) with Fluorocarbon seals
Filtration: See page 9.010.1
Fluids: Mineral-based or synthetics with lubricating properties at viscosities of
   7.4 to 420 cSt (50 to 2000 sus); See Temperature and Oil Viscosity, page 9.060.1
Installation: No position restrictions; See page 9.020.1
   See below for Handle options and installation.
Cavity: VC10-2; See page 9.110.1_2w
Cavity Tool: CT10-2xx; See page 8.600.1
Seal Kit: SK10-2x-M; See page 8.650.1
Lock-Down Bracket Kit: Part No. 5399000


MR10-20 Valve Performance Chart

MR10-20 Valve Dimensions


Cartridge: Weight: 0.12 kg. (0.26 lbs.); Steel with hardened work surfaces. Zinc-plated exposed surfaces; Buna N O-rings and polyester elastomer back-ups standard.

Standard Ported Body: Weight: 0.16 kg.
(0.35 lbs.); Anodized high-strength 6061 T6 aluminum alloy, rated to 207 bar (3000 psi); Ductile iron bodies available; dimensions may differ. See page 8.010.1_2w.

Lever-Type Handle: (Sold Separately) Weight: 0.18 kg. (0.38 lbs.) Steel with hardened work surfaces. Zinc-plated exposed surfaces. Plastic lever arm.

Handle Options and Installation:
Flow Control Adjustment Options
Plastic Knob & Lock-Down Bracket Installation
Ball & Lever Handle Installation


MR10-20 Ordering Chart

Selection guide - similar valves.
PDF file of this page. STP file for MR10-20 Request a quote.