General Technical Information

 

 

The following technical specifications are valid for all Hafner valves.
 

Temperature range:
 

Series

Temperature range

   

BV, BR, BL, BA           

- 20°C … + 50°C

BD, BH

- 10°C … + 60°C

HV, HVR, P

- 10°C … + 60°C

MH / MNH DC-version

- 10°C … + 60°C

MH / MNH AC-version

- 10°C … + 50°C

MD / MK

- 10°C … + 50°C

TT

- 50°C … + 50°C


Several customer-specific items have been catered for an enlarged temperature range.


Leckage rate at 6 bar pressure:

All (100 % of) the Hafner-valves leaving the factory are individually tested on function and leakage.
The following leakage rate is allowed and a valve is still rated as good with the following:

  • Internal leakage: 4 cm³ / min
  • External leakage: 2 cm² / min

For TT-valves only:
At temperatures below - 40°C the internal leakage can increase to 10 cm³ / min.


Standard materials used for Hafner-valves:

 

Valve Part

Series

Material
     

Bodies

Standard

anodised aluminum

 

VES / KES

stainless steel 1.4404

 

 

 

Spool

 

stainless steel 1.4404

 

 

 

Sealing-system

Standard

brass & NBR

 

TT

brass & PUR

 

VES / KES ¼“

stainless steel & PUR

 

VES / KES ½“

stainless steel & FKM

 

 

 

Other inner parts

Standard

brass, POM, NBR

 

TT

brass, POM, NBR

 

VES / KES

stainless steel, POM, FKM

     

Actuation elements

BA

PA 6.6 30 % glass filled

 

HV

Epoxy

 

BH 401

PA 6.6

 

BH 701

Duroplast

 

BHP

ABS

 

 

 

Upper part solenoids

Series 500 und 700

PA 6.6 30 % glass filled, brass

 

Other series

anodised aluminum, brass

 

VES

1.4404, operator tube 1.4305

 

KES

PA 6.6 30 % glass filled, operator tube 1.4305

PA = Polyamide
1.4404 = high graded stainless steel
POM = Polyoxymethlene
FKM = Fluoroelastomer



General Warranty:

The general warranty is 12 month from delivery. Warranty expires when valves have been opened.


Recommended signal length:

The recommended signal length to reach full flow is 50 msek.


Operation and required air-quality:

The valves are designed for being used with cleaned and lubricated or cleaned and unlubricated compressed air.
Required Air-quality-level in accordance to ISO 8573-1:2010: 7 – 4 – 4 for particles – water – oil


Lubrication:

Valves do not require any lubrication but lubrication in general increases the life-time of the products. Please avoid to lubricate the valves during a certain period of time and let them run dry later.

For low-temperatureitems:
Do not lubricate as most kinds of oil and grease do not properly operate below - 25°C.



Voltage tolerance:

The general voltage tolerance of all solenoid systems is +/- 10%.


Other:

In accordance to CETOP position paper „PP07 Machine Directive 2006/42/EC”: Single valves placed on the market are not … within the meaning of Annex V, point 4 of Machine Directive 2006/42/EC.

The Hafner company policy is one of a continuous improvement process. We therefore reserve the right to amend, enhance and change specifications of the products presented in this document without notice.

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