Valve gate nozzles: Valve gate nozzles guarantee consistent sprue quality

The GÜNTHER portfolio includes a multitude of valve gate nozzles and needle actuation options. This enables both a technically and financially perfect adaptation to a wide variety of different hot runner applications and mould concepts. Both the smallest and large shot volumes and sprue mark cross-sections from 0.8 to 4.0 mm (in the standard) can be reliably implemented with valve gate technology. Depending on the application, up to 50% filled plastics can be processed.

 

The advantages at a glace

  • Time and cost savings thanks to easy maintenance
  • Needle guide and needle changing without removing the mould
  • No reworking of the mould inserts required in case of injection point bore wear
  • Long service life of the needle guide, resulting in minimal downtimes and attractive cost savings.
  • Consistent sprue quality across a longer period of time, including for filled plastics.
  • Material changes can be easily responded to thanks to straightforward gate adaptation.
  • Unambiguous opening behaviour
  • Sequential injection and cascade injection moulding possible

 

Needle guide LA
Needle guide LA
Needle guide LAZ
Needle guide LAZ
Needle guide VA
Needle guide VA
Needle guide KA
Needle guide KA
Extremely low-wear operation

The innovative design of the needle guide and the optimised valve needle enable extremely low-wear operation. During the shut-off movement, the needle is first led over a cone up to the cylindrical pre-centring device for precise immersion into the cylindrical injection point. The needle guide is supported floating in the material pipe.

Different types of needle guide
  • Type LA: goes through the cavity insert and is dependant on the part geometry.
  • Type LAZ: with reduced outer diameter in case of limited space on the part.
  • Type VA: is sealed in the cavity insert for when space is limited – insert and nozzle must be exactly coaxial.
  • Type KA: with needle guide in the material tube for cycle times below 3.5 sec – insert and nozzle must be exactly coaxial.
Minimal maintenance expenditure

Should maintenance be required, the needle guide can be changed with minimal effort. Openings in the mould clamping plate enable the immersion depth of the shut-off needles to be adjusted from the outside.

Video - Needle guides
Video - Manufacturing PM needle guide
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Valve gate nozzle type 8NEST
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 8NEST
Subheadline kurz

Single nozzle with conventional heating element

Gate point diameter
1,6 / 2,0 / 2,5 mm
Available nozzle lengths (mm)

60 / 80 / 100

Nozzle lengths upon request (mm)

50 / 120 / 150 / 200 / 250

Valve gate nozzle type 12NEST
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 12NEST
Subheadline kurz

Single nozzle with conventional heating element

Gate point diameter
3,0 / 3,5 / 4,0 mm
Available nozzle lengths (mm)

60 / 80 / 100

Nozzle lengths upon request (mm)

120 / 150 / 200 / 250

Valve gate nozzle type 4NHF
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 4NHF
Subheadline kurz

System nozzle with thick-film heating element (BlueFlow®)

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

Nozzle lengths upon request (mm)

150 / 180

Valve gate nozzle type 5NHF
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 5NHF
Subheadline kurz

System nozzle with thick-film heating element (BlueFlow®)

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

Nozzle lengths upon request (mm)

150 / 180

Valve gate nozzle type 6NHF
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 6NHF
Subheadline kurz

System nozzle with thick-film heating element (BlueFlow®)

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

Nozzle lengths upon request (mm)

150

Valve gate nozzle type 5NHT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 5NHT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100

Valve gate nozzle type 6NHT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 6NHT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

Nozzle lengths upon request (mm)

150 / 200

Valve gate nozzle type 8NHT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 8NHT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
1,6 / 2,0 / 2,5 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120 / 150

Nozzle lengths upon request (mm)

200 / 250

Valve gate nozzle type 10NHT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 10NHT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
1,6 / 2,0 / 2,5 mm
Available nozzle lengths (mm)

60 / 80 / 100 / 120 / 150

Nozzle lengths upon request (mm)

200 / 250

Valve gate nozzle type 12NHT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 12NHT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
3,0 / 3,5 / 4,0 mm
Available nozzle lengths (mm)

60 / 80 / 100 / 150

Nozzle lengths upon request (mm)

120 / 200 / 250

Valve gate nozzle type 5NMT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 5NMT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

Nozzle lengths upon request (mm)

150

Valve gate nozzle type 6NMT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 6NMT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100

Nozzle lengths upon request (mm)

120 / 150 / 200

Valve gate nozzle type 4NTT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 4NTT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80

Valve gate nozzle type 5NTT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 5NTT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

Valve gate nozzle type 6NTT
Typenbezeichnung Heisskanaldüse
Valve gate nozzle type 6NTT
Subheadline kurz

System nozzle with conventional heating element

Gate point diameter
0,8 / 1,0 / 1,2 / 1,4 mm
Available nozzle lengths (mm)

50 / 60 / 80 / 100 / 120

GÜNTHER Heisskanaltechnik GmbH

Industriepark Nord
Sachsenberger Strasse 1
35066 Frankenberg (Eder)

T +49 6451 5008 - 0
F +49 6451 5008 - 50

info@guenther-heisskanal.de
www.guenther-heisskanal.de

We deliver certified quality.