Identification: FH - Knob side Hygienic Design (front hygiene)
Product description
Indexing plungers GN 8170 are certified according to DGUV Test guidelines and meet hygiene requirements on the knob side (front hygiene).
Wipers between the knob and the guide as well as the sealing ring between the guide and the housing keep the locking mechanism on the knob side leak-tight. At the same time, the high surface quality (Ra < 0,8 µm) and dead-space-free mounting prevent dirt from adhering and facilitate cleaning.
Indexing plungers with a rest position (Type C) are used for such applications where the plunger has to stay in its retracted position. In that case, the knob is retracted and afterwards turned by 90°. A notch keeps the plunger in this position.
Mounting holes and through-holes in the housing must be at a right angle, free of burrs and without a chamfer. This ensures that the sealing rings will function properly.
Specification
Guide / Plunger pin / Knob
Stainless steel AISI 316
Plunger pin surface hardened
Pressure spring
Stainless steel AISI 316Ti
Seals
- Blue
- FDA compliant material
- Operating temperature -25 °C to +110 °C
- Sealing ring
HNBR , hardness 85 ±5 Shore AH - Wiper
TPU, hardness 95 ±5 Shore A
All moving parts
Lubricated, grease FDA compliant (NSF H1)
RoHS
