MD-22 type
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It can be used more safely by stable operation due to the diaphragm structure of the pressure detector and double leakage countermeasures by equipping the piston backup seal and leaked oil discharge hole.
Where to use
Fuel oil

Major features

  • By using heat resistant synthetic rubber, it can be used up to high temperatures.
  • In the pressure detection part, the diaphragm serves as a wetted part, improving wear resistance.

specification

Product code MD22-M □The symbol of the set pressure adjustment range is entered in □.
Valve type Primary pressure control valve
Nominal diameter 20-50 (3/4-2)
Applicable fluid Fuel oil (A / B / C heavy oil), oilIn the case of fuel oil, gasoline, light oil, etc., the material of the main body may be specified depending on the destination (Ministry of Land, Infrastructure, Transport and Tourism, Ministry of Defense, etc.), so please specify the material after checking.
Fluid temperature 150 ° C or less
Set pressure adjustment range L: 0.05-0.25MPa, M: 0.2-0.45MPa, H: 0.4-0.7MPa
Blow-down pressure Set pressure x 10% or less (minimum value 0.03MPa)
Allowable leakage amount Nominal diameter 20-32: 0.09 L / min or less
Nominal diameter 40/50: 0.24 L / min or less
Fluid viscosity 700cSt or less
End connection JIS 10K FF flange
Mounting posture Upright mounting on horizontal piping
Material body FCDIn the case of fuel oil, gasoline, light oil, etc., the material of the main body may be specified depending on the destination (Ministry of Land, Infrastructure, Transport and Tourism, Ministry of Defense, etc.), so please specify the material after checking.
Material Diaphragm disc FKM + PTFE (diaphragm)
  • The primary pressure is externally detected.

Download materials

Download materials

Common to all product symbols

MD-22 Catalog

MD-22 Price List

MD-22 outline drawing

Frequently Asked Questions and Explanations

What is the purpose of the primary pressure control valve installed on the outlet side of the pump?

It is used to prevent overheating due to shutoff operation of the pump and to keep the pump discharge pressure constant.

What is a back pressure valve?

Refers to the primary pressure control valve. A regulating valve that discharges fluid in response to changes in the force on the primary side in order to maintain the fluid pressure on the primary side at a certain constant pressure.

What is the purpose of the water fall prevention valve?

Please check the details.

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Products with different symbols depending on the product specifications are indicated by □.
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Notation on catalogs and websites

RD44N-F □

Contains characters that indicate pressure classification and options.

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