PC200_Manual_REV_G-1.pdf - 第8页

PC200 PVA Revis ion G (201 9) 8 of 56 Persona l Protective Equip ment Operators must use eye protection b ecause material contents are under pressure. Always wear gloves when h andling materials and solvents. Refer t o M…

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PC200
PVA
Revision G (2019)
7 of 56
Theory of Operation
The PC200 is a rear closing, two component dispensing valve. Applications include
potting, bead placement, and gaskets where a low to medium flow rate is required. This
valve has adjustable snuff back to prevent drips or strings at the end of the static mixer.
Part A and part B materials flow into the valve separately and out of the valve separately
into a disposable static mixer. It is not necessary to disassemble and clean the valve at
the end of each day. The PC200 has a divorced design made of two major sections: the
air section and the fluid section
Air Section
The air section is an aluminum body with a simple piston/cylinder combination used to
open and close the valve. The stroke adjustment screw in the upper air body controls
how far the piston and rod assembly can retract and controls snuff back.
Fluid Section
The fluid section is available in two materials:
• Stainless steel
• Aluminum (decreased weight for handheld applications)
The fluid section includes two rods with lip seals on each side of the valve to control
fluid flow of part A and part B. Fluid dispenses as the rods move to the forward position
past the lip seals. When the rods retract back into the lip seals the fluid flow stops and
creates a snuff back action on the fluid.
Pneumatic Schematic
Figure 1: General PC200 Pneumatic Schematic
PC200
PVA
Revision G (2019)
8 of 56
Personal Protective Equipment
Operators must use eye protection because material contents are under pressure.
Always wear gloves when handling materials and solvents. Refer to MSDS sheets on the
material being dispensed for other precautions.
Waste Disposal
Dispose of all used parts and materials in accordance with local laws and regulations.
Tool Kit
PVA offers tool kits for dispense valves. The tool kit for the PC200 series valve is part
number B12-2602. This includes all necessary tools and lubricant to do maintenance on
this valve.
Table 1: B12-2602 Contents List
Qty
Part Number
Description
1
0266244
8” Adjustable Wrench
1
7122A47
3/16” Hex Key
2
26571
5/32” Hex Key
2
7122A44
1/8” Hex Key
2
7122A43
7/64” Hex Key
1
56945A13
3/16” Combination Wrench
1
B62-2048
2.5cc Silicone Lubricant
1
MM115
Removable Thread Locker
1
5516A18
Tweezers
1
9570K71
Hook and Pick Set
1
214-0544
Lip Seal Alignment Tool
1
98381A636
Lip Seal Insertion Tool
1
8511T17
Tool Bag
PC200
PVA
Revision G (2019)
9 of 56
Overview
Before you operate the valve, know the valve components. Examine the valve
components shown below for safe and correct operation.
Figure 2: Valve Components