LP-9RN type
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A constant water level valve for cold regions equipped with a drainage mechanism and a flow rate adjustment mechanism. To prevent red water, the screw type can be incorporated into the bronze body at the end of the pipe.

Major features

  • A constant water level valve for cold regions.
  • Equipped with a drainage mechanism and a flow rate adjustment mechanism.
  • Measures against red water: Screw-in type = main body made of bronze + pipe end core can be incorporated
  • Since the passage to the pilot pipe is a bypass passage, there is no effect of intermittent water supply from the ball tap due to waves, and quiet and stable water supply is provided.

Water method performance criteria certification product (E-159) withstand leaching cold

specification

Product code LP9RN-F
Valve type Constant water level valve
Nominal diameter 40-100 (1 1/2-4)
Applicable fluid Tap water / industrial water
Fluid temperature 1 to 60 ° C (1 to 40 ° C when using a tube end core)
Ambient temperature -20-60 ℃
Applicable pressure Nominal diameter 40/50: 0.03 to 0.75MPa, Nominal diameter 65 to 100: 0.035 to 0.75MPa
Minimum differential pressure before and after the valve Nominal diameter 40/50: 0.03MPa, Nominal diameter 65-100: 0.035MPa
End connection JIS 10K FF flangeFor nominal diameters 80 and 100, we also manufacture sluice valve flanges for waterworks.
Flow rate adjustment mechanism With
Valve closing time adjustment needle
Drainage mechanism With
Mounting posture Upright mounting on horizontal piping
accessories Nominal diameter 20 ball tap (with poly ball sand)The ball tap (LB-2N type) is also sold separately. Please refer to page 188. Nominal diameter 20 male / female bushing
Material body CAC406
Material parts C3604 / NBR
Painted inner surface
  • The ball tap is also for cold regions.
  • The only accessory with a nominal diameter of 20 is the ball tap.

Download materials

Download materials

Common to all product symbols

LP-9RN Catalog

LP-9RN Price List

LP-9RN outline drawing

LP-9RN Instruction Manual

LP9RN-F

LP9RN-F (40-50A) reference diagram

LP9RN-F (65-100A) reference drawing

Ball tap LB2N-F (1 ~ 6) Reference drawing

Frequently Asked Questions and Explanations

What kind of failure (complaint) does the constant water level valve have?

Please check the details.

Why do you use solenoid valves and ball taps together for pilot piping?

When using a solenoid valve, the water level is detected by the liquid level switch, and the main valve is opened and closed by the operation of the pilot solenoid valve to control the water level.

Is the flow rate adjustment mechanism of the constant water level valve a constant flow valve?

It is not a constant flow valve. The purpose is to regulate the maximum flow rate to prevent the water pressure drop in the water pipes during the daytime when tap water is in high demand.

Inquiries about this product

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Notation on catalogs and websites

RD44N-F □

Contains characters that indicate pressure classification and options.

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