Groth 2000A - Manual (Page 6)

6
PREVENTIVE MAINTENANCE
The 2000A Series valves do not require routine lubrication or adjustments, but should be checked periodically, at least twice a
year, to confirm that the valve is functioning properly.
Because these valves provide emergency protection, they will not normally cycle in service. Inspection of seat tightness should
be done to ensure compliance with local air pollution control requirements as needed. When inspecting the diaphragms,
gaskets and seals should also be checked. Please refer to handling instructions listed in the Installation section of this manual.
Always keep records of maintenance performed.
WARNING
If the valve must be removed from the tank for any reason, make sure that all pressure has been released before the flange
fasteners are loosened. Refer to your company procedures before venting the tank pressure and when handling toxic or
otherwise hazardous materials.
The main valve body, gaskets and all other components are exposed to the process vapor. Observe all standard safety
precautions as specified on Material Safety Data Sheets for the product[s] in the system while removing the valve and when
repairing it. Take appropriate safety precautions regarding eye protection, respiration & skin contact.
The table below shows the various configurations that make up a 2000A Series valve. Identify the valve, and read the
appropriate section.
Table 4: Configurations
Models Page Guided
Cover
Hinged
Cover
Vacuum
Assembly
2000A 8 X
2050A 9 X X
2400A 13 X
2450A 14 X X
Each section will describe the disassembly and assembly procedures. Each section references part numbers for that valve only.
Use the diagrams preceding each section.
Inspect the soft goods, the seat, and the flanges to ensure seal tightness. Replace components as necessary.
SOFT GOODS KITS
A soft goods kit consists of the diaphragms and washers, if needed. The following system is used to identify and order kits:
Table 5: 2000 Series – Soft Good Kits Numbering System
Prefix Model No. Size
Soft Good Material
KS
2000 = 2000A
2050 = 2050A
2400 = 2400A
2450 = 2450A 16 = 16”
20 = 20”
24 = 24”
A = Aflas
B = Buna-n
K = FFKM
T = Fluoropolymer
V = FKM
Note: Soft goods for the 2000 and 2000A Model Series are interchangeable.
Example:
KS200016T – A Soft goods kit for a 16"2000 valve made of Fluoropolymer.