Product Advantages

• Accurately Limits Flow Rate
• Completely Automatic Operation
• Includes Orifice Plate with Holder
• Optional Check Feature
• Easily Adjusted

The Cla-Val Model 40-01 Rate of Flow Control Valve prevents excessive flow by limiting flow to a preselected maximum rate, regardless of changing line pressure. It is a hydraulically operated, pilot controlled, diaphragm valve. The pilot control responds to the differential pressure produced across an orifice plate installed downstream of the valve. Accurate control is assured as very small changes in the controlling differential pressure produce immediate corrective action of the main valve. Flow rate adjustments are made by turning an adjusting screw on the pilot control.

The Model 40-01 includes an orifice plate with a holder that should be installed one to five pipe diameters downstream of the valve. If the check feature option is added and a pressure reversal occurs, the downstream pressure is admitted into the main valve cover chamber
and the valve closes to prevent return flow. See X52E data sheet for sizing selection.

Item Description
1. 100-01 Hytrol Main Valve
2.  X58C Restricting Fitting
3.  CDHS18 Differential Control
4.  X52E Orifice Plate Assembly

Item Description
A.  X46A Flow Clean Strainer
B.  CK2 Isolation Valve
C.  CV Flow Control (Closing)
D.  Check Valves with Isolation Valve
P.  X141 Pressure Gauge
S.  CV Speed Control (Opening)
V.  X101 Valve Position Indicator
Y.  X43 “Y” Strainer

Used on reservoirs where the water is withdrawn through a separate line or through a bypass equipped with a check valve. The valve opens to refill the reservoir when the water lowers below the shut-off level. For more information see page 4 or data sheet E-CDS6A.

*Note: The reservoir pressure sensing line should be 3⁄4″ minimum I.D. installed with a 2° slope from the valve to the reservoir to avoid air pockets. Altitude Valve For One-Way Flow

Note: We recommend protecting tubing and valve from freezing temperatures.

The 40-01 is typically installed where water supply to a system must be limited to a preset maximum flow rate. The valve is easily set to maintain the maximum allowable flow rate.

The 40-01 is typically installed as a pressure type filter effluent control valve where a constant flow rate is maintained as head loss through the filter varies.

Pressure Ratings (Recommended Maximum Pressure – psi)

Materials

Pressure Ratings (Recommended Maximum Pressure – psi)

Model 210-01 Metric Dimensions (Uses Main Valve Model 100-01)

Model 40-01 Dimensions (In mm)

Note: Orifice plate assembly (X52E) may be attached to the main valve outlet flange, however, better control is obtained if it is located one to five pipe diameters downstream.

Orifice plate sensing connection should be located in the pipeline on the side of the orifice plate assembly. The orifice plate assembly should not be mounted directly to a butterfly valve. See E-X52E Data Sheet for Orifice Bore adjustment range.