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Quick Details

  • Place of Origin: Zhejiang, China (Mainland)
  • Brand Name: Darhor
  • Model Number: EV Series
  • Working pressure: High pressure flow meter
  • medium: liquid, gas
  • material: polysulfone
  • keywords: polysulfone flow meter
  • brand: darhor
  • model: EV
  • OEM: yes
  • Flow range: various

Packaging & Delivery

Packaging Details white carton with polybay inside
Delivery Time 5 days after your payment confirmed

Specifications

High pressure flow meter
Polysulfone plastic body, piston, and cone
0.5 to2 inch ports
Accuracy within 4%

The Darhor EV Series variable area flow meters are constructed of high-impact polysulfone plastic to provide a low cost alternative for your flow monitoring requirements. These simple but rugged variable area flow meters contain a minimum number of moving parts, offering reliable and trouble-free flow measurement.

The Darhor EV Series variable area flow meters can be used in applications in which the temperature ranges from 32°F to 250°F (0°C to 121°C). These Darhor  flow meters are pressure rated for 325 psi/22.4 bar maximum for liquids and for 125 psi/8.6 bar maximum for air and gases.

Variable area flow meters from the Darhor EV Series can be used for the flow measurement of oil, water, air, and compressed gases. Choose the port size and fitting material depending on your application. Five port sizes are available between 1½ to 2 inches with brass or PVC fittings. Six port sizes are available between ½ to 1 inch with brass, PVC, or stainless steel fittings.

Operating Principle of the Darhor EV Series Variable Area Flow Meters

A precision-molded, sharp-edged orifice forms an annular opening with the metering cone. Flow through the meter creates a pressure differential across the orifice, moving the piston against the spring in direct proportion to the rate of flow. The calibrated spring opposes flow in the forward direction. This spring decreases viscosity sensitivity and allows the flow meters to be used in any position, including inverted. The indicated flow rate is measured by viewing the red indicator line on the piston relative to the pre-calibrated numerical scale, mounted on the outer surface of the transparent body.

Features of the Darhor EV  Series Variable Area Flow Meter

  • No special piping or flow straighteners needed
  • Easy to install in any position
  • No electrical connections
  • Direct reading indication
  • Relatively insensitive to shock and vibration
  • Fluid Flow Range female, female, female, female, socket weld
    Media brass fitting brass fitting brass fitting brass fitting fitting
  • Manufactured by Darhor
  • Polysulfone plastic body, piston, and cone
  • ½ to 2 inch ports
  • Accuracy within ±5% full scale
  • 325 psi (22 bar) for oil & water
  • Up to 250°F (121°C)
  • 0.5-100 GPM (2-380 LPM) for oil & water
  • Standard calibration:
    0.876 specific gravity for oil;
    1.0 specific gravity for water
  • Applications: Water Cooling Systems, Chemical and Water Systems, Reverse Osmosis Systems

 

Model

 Measuring  Range

 

 

 

WATER 20C

AIR 20C

Thread

NPT

BSPT

BSP

 

Material

GPM

LPM

GPM

LPS

EV

15

20

25

0.5-5

1-7

1-10

1-16

3-18

4-28

2-20

4-26

4-35

5-60

15-65

20-100

80-320

160-480

240-720

320-1100

480-1250

550-1750

5-20

10-30

15-45

20-70

30-80

35-110

1/2

3/4

1

 

Brass

S S

PVC

EV

40

50

3-25

5-50

8-80

10-100

12-90

20-200

30-280

40-380

250-1500

350-2200

450-4500

700-6000

15-95

20-140

25-275

45-370

11/2

2

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China (Mainland) | Manufacturer, Trading Company
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