MD-11 type
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This valve is a direct-acting bypass valve for pumps that keeps the pump discharge pressure constant by discharging the increased pressure change due to load fluctuations. It is also used as a relief valve for RD-11 type and WVR-02 type pressure reducing valves.

specification

Product code MD11-B □The symbol of the set pressure adjustment range is entered in □.
Valve type Primary pressure control valve
Nominal diameter 20-150 (3/4-6)
Applicable fluid Fresh water, industrial water, agricultural water
Fluid temperature 5-60 ° C
Set pressure adjustment range Nominal diameter 80 or less L: 0.05 to 0.14, M: 0.14 to 0.36, H: 0.36 to 0.5MPaWe also manufacture high-voltage products (nominal diameter 80 or less: 0.5 to 0.8 MPa).
Nominal diameter 100 or more L: 0.05 to 0.1, M: 0.1 to 0.25, H: 0.25 to 0.4, S: 0.4 to 0.45, V: 0.45 to 0.5 MPa
Blow-down pressure Set pressure x 10% or less (minimum value 0.02MPa)
Allowable leakage amount None (visual pressure gauge)
End connection JIS 10K RF flangeWe also manufacture JIS 5K FF / RF, 10K FF flanges, and sluice valve flanges for waterworks (nominal diameters 100 to 150).
Mounting posture Upright mounting on horizontal piping
Material body FC
Material parts CAC406
Material Diaphragm disc NBR
  • Please contact us if you have a connection hole for attaching a pressure gauge on the side of the main body (nominal diameter 80 or less: JIS Rc1 / 4 screw, nominal diameter 100 or more: JIS Rc3 / 8 screw), or with a pressure gauge attached to this. ..

Download materials

Download materials

Common to all product symbols

MD-11 Catalog

MD-11 Price List

MD-11 Instruction Manual

MD11-B □

MD11-B reference diagram

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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