MIYAWAKI AGC1V User manual

LEVER FREE BALL FLOAT AIR DRAIN TRAP
USER'S MANUAL

SAFETY GUIDE
The model AGC1V is a lever free ball float air drain trap designed for
continuous discharge of condensate from air piping, receiver tanks,
gas and compressed air system.
In order to get maximum benefit from this product, be sure to read
this manual before installing it.
The following warnings and cautions are shown at appropriate
places in this manual.
WARNING
Failure to observe this type of precaution may
lead to serious injury or death.
CAUTION
Failure to follow this type of precaution can lead
to injury or damage to equipment and property.
Table of Contents
1 SPECIFICATIONS AND MARKINGS 1
2 CONSTRUCTION DETAILS 2
3 INSTALLATION 3
4 MAINTENANCE 4
5 TROUBLESHOOTING 6
6 WARRANTY 7
7 SERIAL NUMBER（S. No.）DESIGNATION 8
8 GUIDANCE FOR READING SPECIAL PRODUCT NAME 9

1
1 SPECIFICATIONS AND MARKINGS
WARNING
Be sure not to use this product at higher pressures than the specified maximum
allowable pressure (PMA) or at temperatures higher than the specified maximum
allowable temperature (TMA).
The following items are displayed on the name label or the side of the product.
Check each item to avoid misuse of the product.
1) Maximum allowable pressure (PMA): 2.1MPa (305psig)
2) Maximum allowable temperature (TMA): 350°C (662°F)
3) Maximum differential pressure (⊿PMX): 2.1MPa (305psig)
4) Maximum operating temperature (TMO): 350°C (662°F)
5) Size: 15mm (1/2"), 20mm (3/4"), or 25mm (1")
6) Year of production: The two leftmost digits in the four-digit or nine-digit 'S No.' on the
name plate are the last two digits of the year of production.
7) Flow direction: Shown by an arrow
8) Body material: SCS13A
9) Model symbol: Showing the product model name
Some pictures and illustrations in this manual are that of the representative model. For
more details regarding dimensions and other specifications, please refer to the catalog.

2
2 CONSTRUCTION DETAILS
1. Body
2. Bottom Cover
3. Float
4. Valve Seat
5. Valve Seat Gasket
8. Screen
9. Cover Gasket
10. Bolt
13. Spring Pin
(9)
(1)
(5)
(3)
(2)
(13)
(8)
(4)
(10)

3
3 INSTALLATION
WARNING
Pay very careful attention when working in hazardous environments. There is a risk
of explosion and the possibility of dangerous gases leaking. Always check whether
the pipeline contains flammable, high pressure or high temperature materials before
starting to work.
 Make sure that isolation valves are installed on both the upstream and downstream
lines.
CAUTION
Before installing the product, open both isolation valves and the bypass valve, if
one exists, to blow out any debris or dirt inside the pipeline. After blowing out the
line, before starting to work, close the isolation valves and allow time for the
temperature to drop to a safe working temperature.
When installing the product, be sure to leave clearance for maintaining it.
1) Remove the dustproof seals covering both connections.
2) Check the flow direction indicated on the side of the body.
3) When installing an AGC1V, make sure to keep the flow direction parallel to a plumb
line (basically pointing up or down).
If the installation angle slants more than five degrees away from the angles described
above, the operating performance may be reduced.
4) Install the trap at the lowest position where condensate is collected.
5) Open the isolation valve on the upstream line slowly and make sure the product works
normally.

4
4 MAINTENANCE
CAUTION
 When replacing parts, make sure the replacement parts are supplied by Miyawaki.
The performance of drain traps deteriorates gradually over time due to wear, corrosion or
dirt accumulating around the valve seat. To keep air (gas) control systems and equipment
working well, periodic maintenance of drain traps is essential.
4.1 Repairs
When a trap fails, it is necessary to clean the internal parts and to replace damaged parts.
Take the failed trap apart following the steps below.
4.1.1 Disassembling the trap
1) Remove the four cover bolts (10), and detach the bottom cover (2), while keeping the
body (1) facing down.
2) Remove the screen (8), the float (3), and the cover gasket (9) in that order.
3) Repair the trap according to the instructions in “Troubleshooting”.
After repairing the trap, re-assemble the parts in reverse order as follows.
4.1.2 Reassembling the trap
1) When putting the body (1) and the bottom cover (2) together, orient the body and
cover by inserting the spring pin (13) in the body (1) into the hole on the bottom cover
(2).
2) When fastening the four cover bolts (10), tighten each one the same amount, going
around the four bolts several times.
3) The cover gasket (9) must be replaced with a new one each time the trap is taken
apart.
4) The valve seat gasket (5) must be replaced with a new one each time the valve seat is
detached from the bottom cover (2).
 Make sure to tighten the bolts in a crosswise pattern, to avoid uneven tightening.
The torque for each part is shown in the following table.
Parts Tools Across the flats Torque
Valve Seat (4) Torque wrench 13 mm (0.51”) 25N・m
Cover Bolt (10) Torque wrench 17 mm (0.67”) 28N・m

5
(11)
(2)
(4)
(8)
(1)
1. Body
2. Bottom Cover
3. Ball Float
4. Valve Seat
5. Valve Seat Gasket
8. Screen
9. Cover Gasket
10. Bolt
11. Name Plate
12. Rivet
13. Spring Pin
(3)
(12)
(5)
(13)
(9)
(10)

6
5 TROUBLESHOOTING
Problem Possible cause Solution
Air leaks or blows through. Dirt is stuck around the valve
or valve seat.
Clean the valve and the valve
seat.
Damage, erosion or corrosion
of the valve seat.
Replace the valve seat.
The valve seat is loose. Tighten the valve seat. *1
The float is damaged. Replace the float.
Installation position is wrong. Change the installation position
to Vertical.
Wrong installation direction Make sure the arrow on the
main body matches the flow
direction of the fluid.
Air leaks from the body. The bolts are loose. Tighten the bolts.*2
The gasket is damaged or
worn.
Replace the gasket.
The sealing surface on the
body or the bottom cover is
damaged.
Replace the body or the
bottom cover.
Insufficient condensate
discharged, or no
condensate discharged.
The screen is clogged. Clean the screen.
Dirt has built up on or around
the valve seat.
Clean the valve seat.
The float is damaged. Replace the float.
Wrong installation direction Make sure the arrow on the
main body matches the flow
direction of the fluid.
*1 and *2: Refer to the torque table in Section 4, “Maintenance” to retighten the parts to the
correct torque.

7
6 WARRANTY
6.1 Warranty period
The warranty period is 18 months after shipment or 12 months after installation, whichever
occurs first.
6.2 Details of the warranty
If the product stops working correctly within the warranty period, we will repair or replace
the product free of charge if the cause of the trouble is not one of the following items.
1) The precautions described in this manual were not observed.
2) User's errors or mistakes such as an inappropriate installation or incorrect handling,
or an excessively large impact caused by dropping
3) Problems caused by devices or equipment other than ours, or a disallowed use
environment
4) When a repair or modification has been performed by anyone other than us or people
who are authorized to make such repairs
5) Intrusion of salt or other substances that promote significant rust or corrosion or
problems from fluids that contain the same substances
6) Consumable parts such as Packing, Gasket, O-ring, Diaphragm, etc
7) Attachment or accumulation of foreign matter in the pipe, such as dust and scale
8) Problems from fires, natural disasters, or other force majeure which is not our
responsibility
6.3 Warranty limitation
The remedy available under the warranty shall not exceed the sales price of the products
delivered, for any cause whatsoever.

8
7 SERIAL NUMBER（S. No.）DESIGNATION
The following 4-digit or 9-digit “S.No.” is displayed on the product.
●For 4-digit display
S.No. □□□□
Represents the day.
Represents the month.
Represents the year. (last two digits of the
year according to the Western calendar)
●For 9-digit display
S.No. □□□□□□□□□
MIYAWAKI identification number
Represents the month.
Represents the year. (last two digits of the
year according to the Western calendar)
Month designation system
Month 1 2 3 4 5 6 7 8 9 10 11 12
Symbol 1 2 3 4 5 6 7 8 9 X Y Z
Day designation system
Day 1 2 3 4 5 6 7 8 9 10 11 12
Symbol D E F G H J K L M N O P
Day 13 14 15 16 17 18 19 20 21 22 23 24
Symbol D E F G H J K L M N O P
Day 25 26 27 28 29 30 31
Symbol Q R S T U V W
Example of serial number designation
1 7 1 1 → Jan.1, 2017
2
9 X
M
→
Oct
.
21, 2029
Example of serial number designation
1 7 1 1 2 C 0 2 0 → Jan., 2017
2 9
X
0 5
M
0 5
0
→
Oct
.
,
2029