GN 655 Flow indicator Plastic


ELESA original design
code: HVF

Product description


When GN 655 flow indicators are used, a rotor rotates above a minimum volume flow rate Q, depending on the medium and its viscosity. The flow rate is visible from all sides.

GN 655 flow indicators have a high chemical resistance and are also suitable for liquids containing glycol. Please contact us if you need any additional information about media and pressure resistance. The flow indicators can be used in temperatures of up to 100°C.

The flow indicator can be mounted in any position. The direction of flow and the installation position are irrelevant.


Sight glass
Borosilicate glass (Pyrex®)
  • temperature resistant up to 100 °C
  • highest chemical resistance

  • Technopolymer polypropylene (PP)
  • redRTRT

End pieces
  • Technopolymer polypropylene (PP)
  • black, matte
  • Threaded bushings brass

Connecting elements
Brass nickel-plated / Steel zinc-plated

Sealing ring
rubber NBR (Perbunan)

RoHS compliant

On request

Rotor in blue color
Threaded bushings with NPT-Thread
Threaded bushings in Stainless Steel AISI 316

Technical drawing

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GN 655 Flow indicator, Plastic sketch

Article options / Table

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dl1l2b1b2smax. flow in l/minmax. permissible operating pressure in bar≈ necessary minimum flow volume Q in l/min

Hydraulic oil
(HPL 22)

Hydraulic oil
(HPL 64)
max. pressure drop due to the flow indicator in bar
G 1/4662244272010250,62,53,50,15
G 3/8923660402820151,2340,25
G 1/2923660402840151,2340,3
G 3/41144670704660152,13,750,17
G 11144670704680152,13,750,15

Build & Price

Inch thread d

Selected Part (How to order)

Weight: 0,074 kg
If this article is new in our product range, it may happen that details concerning weight are as yet not listed.
If you do need weight details, please contact our Sales Department!
Phone+49 7723 6507 - 0
RoHS compliant: Yes
This article conforms to RoHS, which means it complies with EU Directive 2011/65/EU for restricting the use of certain hazardous substances in electrical and electronic devices. The Directive regulates the use of hazardous substances in devices and components. The implementation in national law is summarily described with RoHS(Restriction of (the use of certain) hazardous substances)).
Please note our quantity discounts.
With a total value (net) per order:
from 150 Euro -> 10 % discount
from 250 Euro -> 20 % discount
from 350 Euro -> 30 % discount
All prices in accordance with our price list No. 51, valid from 1 February 2018, plus VAT only valid for Germany.

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