Nordson-EFD-Series-450-Instructions - 第12页
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists 12 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide. A V -RK-TGT #7704093 R…
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists
11www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Air Cylinder — #7702265 Hardened SS Shafts
NOTE: Prior to assembly lubricate all
O-rings with auto grease.
P/N Ref. # Qty. Description
— 70 1 Snuff-Back Adjustment Screw
— 71 2 BHCS 1/4-20 x 1/2" long
7702402 72 1 Aluminum Back Plate
— 73 1 Brown Viton O-Ring (Back Plate)
— 74 1 Brown Viton O-Ring (Piston)
7702400 75 1 Replacement Piston and Hardened SS Shafts
7702074 76 1 Replacement Body with Front Seals
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists
12 www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
AV-RK-TGT #7704093
Ref. No. Qty. Description
13 2 PTFE Front Seal
3 6 UHMPE U-cup & SS Spring
6 6 PTFE encapsulated O-ring
AV-RK-TPV #7704095
Ref. No. Qty. Description
13 2 PTFE Front Seal
3 6 PU U-cup & Viton O-ring
6 6 Viton (brown) O-ring
AV-RK-TTT #7704096
Ref. No. Qty. Description
13 2 PTFE Front Seal
3 6 PTFE U-cup & PTFE O-ring
6 6 PTFE encapsulated O-ring
Spare Parts Kits
450 Autogun Repair Kits
Each kit contains a complete set of lip seals, O-rings, and front seals.
450 Autovalve with Snuff-Back
Snuff-Back Adjustment: Advancing (clockwise turn) the snuff-back adjustment screw reduces snuff-back, retracting it
(counterclockwise) increases the snuff-back. Since excessive snuff-back action can cause plugging of the valve, adjust for
minimum snuff-back as follows: With the pumps on and valve in the “closed” position, advance the adjustment screw until
material begins to drool out of the static mixer (acting as if the valve is open). Then retract the screw just until fluid stops, at
the minimum snuff-back position. If material drools or drips during operation, slightly increase the snuff-back until the desired
action is achieved.
Locking nut
Connect air to close
Snuff-back
adjustment
screw
Connect air to open
NOTE: Each 450 AutoGun comes with (2) front seals to be
discarded.
Consult Factory for additional seal combinations.
Series 450 Autovalve / Snuff Back | Instructions / Parts Lists
13www.nordsonefd.com info@nordsonefd.com +1-401-431-7000 Sales and service of Nordson EFD dispensing systems are available worldwide.
Accessories
Carbon Steel Adapters
P/N Description
7702420 90 degree Elbow with 3/8 FNPS
7702425 Straight Adapter with 3/8 FNPS
Collar
Ratio Check Cap
In order to ensure correct A/B ratio, ratio checks
should be performed regularly with our Ratio Check
Cap.
Night Cap
At night or on weekends, it is a good idea to seal your
system. After the static mixer is removed, a night cap
can be installed. This seals the system and makes
startup simpler.
P/N Description
7701184* Ratio Check Cap with retaining nut
7701181* Night Cap with retaining nut
*Use with 1:1 ratio manifolds only.
Ratio check
Night cap
Manifold Manifold