AsahiAV 21 User manual

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 1 -
Ball Valve Type 21・21α
15〜100mm
Thank you very much for choosing our product.
This instruction manual is for your safety to use our product.
This manual contains important information. Be sure to read this manual before handling the product.
After reading this manual, the user can refer to it at any time.
Please be sure to keep it.
Userʼs Manual

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 2 -
-SAFETY PRECAUTIONS-
This instruction manual is written on the assumption that the person who handles our products has a basic
knowledge of our products, electrical equipment, machinery, control, etc., and it contains technical terms
depending on the handling contents.
Please read this manual carefully and fully understand the contents and observe the safety precautions for
proper use.
In this manual, the warning, caution, prohibition, and enforcement are categorized together with the symbol to
inform the situation and scale of human injury or property damage.
Failure to observe this precaution may result in unexpected failure or damage. Be sure to observe this precaution.
<WARNING/CAUTION indications>
Indicates a potentially hazardous situation which, if not avoided, could result in death or
serious injury.
Indicates a potentially hazardous situation which, if not avoided, may result in minor or
moderate injury or property damage.
<Prohibited/Forced display>
In the handling of the product, it is prohibited to do it in "Do not do it".
In the handling of the product, it is forced by "contents to be carried out without fail".
Prohibition
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 3 -
Table of contents
1. Our product warranty coverageꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 4
Applicable to........................................................................................................................................................................................... 4
Warranty Period ..................................................................................................................................................................................... 4
Guaranteed range .................................................................................................................................................................................. 4
Disclaimer ............................................................................................................................................................................................... 4
2. Safety Instructions ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 5
Unpacking, Conveyance and Storage ................................................................................................................................................. 5
Product Handling ................................................................................................................................................................................... 6
3. Name of each part ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 8
4. Product Specificationsꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ10
Model number table ............................................................................................................................................................................ 10
Valve ...................................................................................................................................................................................................... 10
Relationship between maximum allowable pressure and temperature ...................................................................................... 11
[When the connection standard is ANSI and DIN] ......................................................................................................................... 12
Specification of limit switch (option) ............................................................................................................................................... 13
5. Piping methodꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ14
Flanged type ......................................................................................................................................................................................... 14
Threaded type ...................................................................................................................................................................................... 17
Socket type (adhesive) ....................................................................................................................................................................... 19
Socket type, spigot type (fusing) ...................................................................................................................................................... 22
Limit switch wiring method ................................................................................................................................................................ 24
Installation Procedure of the Locking Device ................................................................................................................................. 26
6. How to mount actuator, entertainment and frame (panel)ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ27
7. How to operate ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ31
8. How to adjust the surface pressure of the ball and seatꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ32
9. Disassembling method for parts replacement ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ33
10. Inspection itemꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ35
Daily inspection ................................................................................................................................................................................... 36
Periodic inspection .............................................................................................................................................................................. 38
11. Cause of malfunction and remedy ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ39
12. Disposal method of residual materials and waste materials ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ42

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 4 -
1. Our product warranty coverage
Unless otherwise stated in the Contract or Specifications, etc., the warranty for the piping material products
(hereinafter referred to as "applicable products") such as valves manufactured or sold by us is as follows.
Applicable to
This warranty applies only when the product is used in Japan. If you intend to use the product overseas, please
contact us.
Warranty Period
The warranty period is one year after delivery.
Guaranteed range
In the event of failure or malfunction due to our responsibility during the above warranty period, we will replace
or repair the product with a substitute free of charge.
Provided, however, that even within the warranty period, the warranty shall not apply to any of the following
cases (charged service).
▶ When the storage, operating conditions, precautions, etc. described in the specifications, instruction
manual, etc. are not adhered to in the construction, installation, handling, maintenance, etc.
▶ Defects, such as the design of the customer's equipment or software, caused by other than the target
product.
▶ The fault is due to modification or secondary processing of the product by something other than us.
▶ In the case of a failure which can be deemed to have been avoided if the periodic inspection described in
the instruction manual, etc. or the maintenance or replacement of consumable parts has been performed
normally.
▶ The component is used for purposes other than the product's intended use.
▶ Failure or malfunction due to causes that could not be foreseen by our level of science and technology at
the time of shipment.
▶ The fault is due to an external factor that is not our responsibility, such as natural disaster or disaster.
Disclaimer
▶ The warranty will not cover secondary damage (damage to equipment, loss of opportunity, loss of profit,
etc.) or any other damage caused by the failure of our product.
▶ Although we strive to improve the quality and reliability of our products, we do not guarantee their integrity.
Especially when using this product for equipment that may infringe human life, body or property, take
appropriate safety design measures, etc., with full consideration of problems that may normally occur. We
assume no responsibility for such use if we have not obtained our consent in advance in writing of
specifications, etc.
▶Please observe the product specifications and precautions when using our products. We shall not assume
any responsibility for any damage to the customer caused by the customer's negligence. However, this
does not apply to damage caused by a defect in our product.

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 5 -
2. Safety Instructions
Unpacking, Conveyance and Storage
Serious injuries are possible.
▶ When hanging or slinging a valve, pay sufficient attention to safety, and do not enter
under the load.
The valve can be damaged, damaged, or leak.
▶ Do not subject the product to impact by throwing, dropping or hitting.
▶ Do not scratch or pierce the product with a sharp object such as a knife or hand
hook.
▶ Do not pile up cardboard boxes forcefully to prevent the load from collapsing.
▶ Avoid contact with coal tar, creosote (a wood preservative), white pesticides,
insecticides, paints, etc.
The valve can be damaged, damaged, or leak.
▶ Keep in cardboard until just before piping, and store indoors (at room temperature)
away from direct sunlight. Also, avoid storing the product in places of high
temperature. (The strength of cardboard packaging decreases when it gets wet. Be
very careful when storing and handling it.)
▶ After unpacking, make sure that the product is correct and that it meets the
specifications.
Prohibition
Forcing
Prohibition

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 6 -
Product Handling
The valve can be damaged, damaged, or leak.
▶ If positive pressure gas is used for our resin piping material, a dangerous condition
may occur due to the repulsive force peculiar to compressible fluids even if the
pressure is the same as the water pressure. Therefore, be sure to take safety
measures for the surrounding area, such as covering the piping with protective
materials.If you have any questions, please contact us separately.
▶ This valve is structurally dead space.Vaporizing fluids such as hydrogen hydroxide
(H2O2) and soda hypochlorite (NaClO) may vaporize in the deadspace and cause
an abnormal pressure rise inside the valve. Be very careful. (Gas with abnormal
pressure increase due to vaporization is a compressible fluid. Therefore, if a valve
should break, fragments will scatter explosively, which is very dangerous.)
▶ When conducting a pipe leak test after completion of piping construction, be sure
to check with water pressure.Contact us in advance if you are unavoidable to test
with a gas.
The valve can be damaged, damaged, or leak.
▶ Do not step on the valve or place heavy objects on it.
▶ Keep away from fire and hot objects.
▶ Do not use the product in places where it may be submerged.
▶ Do not subject the valve to large vibrations.
There is a danger of injury.
▶ Secure sufficient space for maintenance and inspection when piping.
The valve can be damaged, damaged, or leak.
▶ Pay attention to the atmosphere where the valve is installed.Avoid locations where
the product is exposed to sea breezes, corrosive gases, chemical liquids, sea water,
steam, etc.
▶ Keep the pressure and temperature of the fluid within the allowable range.
(The maximum allowable pressure includes water hammer pressure.)
▶ Use a valve of suitable material for the operating conditions.
(Depending on the type of chemical liquid, the parts may be damaged. Contact us in
advance for details.)
▶ Use fluids containing crystalline material under conditions that do not recrystallize.
▶ Avoid any place where the valve is constantly exposed to splashes of water and dust,
or direct sunlight, or protect the valve with a cover or the like to cover the entire area
Prohibition
Forcing
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 7 -
▶Perform maintenance on a regular basis referring to "10. Inspection items." Pay
particular attention to temperature changes and aging during long-term storage or
shutdown or use.
▶ When installing a valve, provide an appropriate valve support so that excessive force
is not applied to the valve and piping.
▶ Always use the product within the indicated product specifications.
▶ If the valve is used at an intermediate position, the mark of the ball opening will
remain on the seat (PTFE), and sealing performance may temporarily deteriorate
when the valve is fully closed. Therefore, it is recommended to use the valve fully
open or closed.
▶ If you notice an unusual odor, heat, or smoke, immediately turn off the power supply.
If any abnormality is found, be sure to consult your dealer or us for inspection.
▶ Keep the ambient temperature of the installation location within-10 to 50°C.
▶ Avoid locations with volatile gases or poor atmospheres. Provide a cover, etc., to
cover the entire area.
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 8 -
3. Name of each part
Nominal Size: 15-50mm (1/2”-2”)
*1) Type21 and 21α have not all same parts to make one complete.
*2) Type21 and 21α type are partially incompatible. Please contact us for details.
No. DESCRIPTION No. DESCRIPTION No. DESCRIPTION
[1] Body *1) [6] Stem *1) [13] Stop ring
[2] Ball *1)/Vented Ball *1) [7] Seat *1) [14] Handle
[3] Carrier *1) [7a] Seat (A)*1) [15] Tapping screw (A)
[4b]
End connector (Flanged End )
[8] O-ring (A) [19] Extension stem
[4c]
End connector (Socket End) [9] O-ring (B) *2) [19a]
Tapping screw (B)
[4d]
End connector (Threaded End)
[10] O-ring (C) *2)
[4e]
End connector (Spigot End) * [11] O-ring (D)
[5] Union nut [12] O-ring (E)

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 9 -
Nominal Size: 65-100mm (2 1/2”-4”)
No. DESCRIPTION No. DESCRIPTION No. DESCRIPTION
[1] Body [6] Stem [13] Stop ring
[2] Ball / Vented Ball [7] Seat [14] Handle
[3] Carrier [7a] Seat (A) [15] Tapping screw (A)
[4b]
End connector (Flanged End )
[8] O-ring (A) [19] Extension stem
[4c]
End connector (Socket End) [9] O-ring (B) [19a]
Tapping screw (B)
[4d]
End connector (Threaded End)
[10] Cushion
[4e]
End connector (Spigot End) [11] O-ring (D)
[5] Union nut [12] O-ring (E)

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 10 -
4. Product Specifications
Model number table
NOTE ・Nominal size 10 mm is DIN standard only.
・We do not manufacture JIS standard C-PVC threaded type 13 mm.
・The PP/PVDF socket type is a welding type. However, JIS standard PP 32mm socket type is not
manufactured.
・There is no JIS standard for PVDF socket type.
Valve
*Models are classified by nominal diameter and material.
AAUTOMATIC 21 TYPE 21 LV LEVER TYPE UU-PVC EEPDM SSOCKET JJIS 010 10mm 1LIBRICANT FREE
2A TYPE 21α CC-PVC VFKM NTHREADED DDIN 〜
PPP PSPIGOT AANSI 100 100mm
FPVDF FFLANGED 1JIS10K
5JIS5K
Size
A ＊＊ ＊＊ ＊ ＊ ＊ ＊ ＊＊＊
ACTUATION TYPE OPERATING SYSTEM BODY MATERIAL HIGH PURITY SERIES
＊
SEAL MATERIAL Connection Standard
BODY MATERIAL
SIZE
U-PVC C-PVC PP PVDF
15〜50mm TYPE 21α TYPE 21
65〜100mm

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 11 -
Relationship between maximum allowable pressure and temperature
[When the connection standard is JIS]

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 12 -
[When the connection standard is ANSI and DIN]

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21・21α 15 ~ 100mm
- 13 -
Specification of limit switch (option)
Nominal Size
Type Code
Switch Contact Protection
Grade
15 - 100mm
(1/2” - 4”)
SL1-A Silver Contact
IP67
SL1-AK Gold Contact (Micro load)
Limit Switch Rating
T
ype
Code
Rate
Voltage
(V)
Resistive
Load (A)
Inductive
Load (A)
SL1-A
AC125 5 3
AC250 5 3
DC8 5 3
DC14 5 3
DC30 5 3
DC115 0.5 0.1
DC230 0.25 0.05
SL1-
AK
AC115 0.1 -
DC8 0.1 -
DC14 0.1 -
DC30 0.1 -
Connection Diagram
Valve full open (or close); COM and NC connected

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 14 -
5. Piping method
Flanged type
Serious injury can result.
▶ When hanging or slinging a valve, pay sufficient attention to safety, and do not enter
under the load.
The valve can be damaged, damaged, or leak.
▶ Do not overtighten the cap nut.
▶ Do not use a pipe wrench to tighten the cap nut.
▶ Do not tighten the bolts and nuts for piping to the specified torque values in Table 5-
2.
There is a danger of injury.
▶ Be sure to perform safety inspections of the machine tool and power tool beforehand.
▶ Wear appropriate protective equipment according to the type of work being
performed.
The valve can be damaged, damaged, or leak.
▶ Install the product so that excessive stress such as tension, compression, bending or
impact is not applied to the piping or valve.
▶ Fix the body cap during piping work or disassembly and reassembly.
▶ When attaching the valve to the end of the pipe, be sure to attach the cap nut and
body cap on the secondary side (downstream side).
▶ When connecting to metal piping, do not apply piping stress to the valve.
▶ Use a connection flange with a full-face seat.
▶ Check that there is no difference in mutual flange standards.
▶ Be sure to use a sealing gasket (AV packing) between the flanges and tighten the
pipe bolts/nuts to the specified torque values in Table 5-2 "Flange tightening
torque."(When other than AV packing, the tightening torque value will change.)
▶ Keep the axis misalignment and parallelism of the flange surface below the values
shown in Table 5-1 "Axis misalignment and parallelism."
▶ Tighten the bolts and nuts for piping diagonally with the specified torque values in
Table 5-2.
Prohibition
Prohibition
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 15 -
Safe use.
▶ When installing the valve at the end of the pipe,
pay attention to the flow direction.(Check the ◀
mark on the body of the union side. The union part
of the secondary side (downstream side) is
integrated with the body, so if it is installed at the
end of the pipe, it will be safer to use.)
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 16 -
Unit: mm {inch}
[Procedure]
1) Clean mutual flange surfaces with a waste cloth.
2) Set AV packing between the flanges.
3) Insert the washer and bolt from the connecting flange side,
insert the washer and nut from the valve side, and tighten
temporarily by hand.
4) Set the axis misalignment and parallelism of the flange surface
below the values shown in Table 5-1, "Axis misalignment and
parallelism."(See Fig. 5-1.)
5) Using a torque wrench, gradually tighten the screws
diagonally to "Table 5-2 Flange Tightening Specified
Torque Values". (See Fig. 5-2.)
6) Tighten it more than two turns clockwise with "Table 5-2
Flange Tightening Torque Specified Values"
.(See Fig. 5-2.)
7) When it is necessary to loosen or remove the cap nut for construction reasons,
follow the procedure below to tighten the cap nut.
7-1) Make sure that the O-ring (A) is installed in the body correctly.
7-2) Bring the body cap and cap nut into contact with the body side so that the
O-ring (A) does not come off.
7-3) Tighten the cap nut by hand until it is tight.
7-4) Screw in the cap nut by 1/4 to 1/2 turn with a belt wrench to prevent damage
to the cap nut.
Table 5-2 Flange tightening specified torque value Unit: N･m｛kgf･cm｝[lb･inch]
AV
gasket
material
15-20mm(1/2”-3/4”) 25-40mm(1”-1 1/2”) 50, 65 mm(2”, 2 1/2”) 80, 100 mm(3”, 4”)
PTFE coated
PVDF coated 17.5 {179} [155] 20.0 {204} [177] 22.5 {230} [230] 30.0 {306} [266]
Rubber 8.0 {82} [71] 20.0 {204} [177] 22.5 {230} [230] 30.0 {306} [266]
Preparations ▶ Torque wrench ▶ spanner or ophthalmic wrench ▶ belt wrench
▶ Pipe head bolts/nuts, washers ▶ and AV packing ▶ cloth
Nominal Size Axial
Misalignment
Parallelism
(a-b)
15-32mm
(1/2”-1 1/4”)
1.0 {0.04} 0.5 {0.02}
40-80mm
(1 1/2”-3”)
1.0 {0.04} 0.8 {0.03}
100mm (4”) 1.0 {0.04} 1.0 {0.04}
Axial misalignment
Parallelism
Fig. 5.2
Fig. 5-1
O-ring（A）

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 17 -
Threaded type
Serious injury can result.
▶ When hanging or slinging a valve, pay sufficient attention to safety, and do not
enter under the load.
The valve can be damaged, damaged, or leak.
▶ Do not overtighten the screws at the joints.
▶ Do not overtighten the cap nut.
▶ Do not use a pipe wrench to tighten the cap nut.
There is a danger of injury.
▶ Be sure to perform safety inspections of the machine tool and power tool beforehand.
▶ Wear appropriate protective equipment according to the type of work being
performed.
The valve can be damaged, damaged, or leak.
▶ The cap nut of this product is lightly tightened to make it easier to loosen.Be sure to
remove the body cap before installation.
▶ Install the product so that excessive stress such as tension, compression, bending or
impact is not applied to the piping or valve.
▶ Fix the body cap during piping work or disassembly and reassembly.
▶ When attaching the valve to the end of the pipe, be sure to attach the cap nut and
body cap on the secondary side (downstream side).
▶ When connecting to metal piping, do not apply piping stress to the valve.
▶ Make sure that the screws at the joints are made of resin.
▶ Use sealing tape for the sealing material of the screw-in part. If liquid
sealant or liquid gasket is used, stress cracking (environmental stress cracking) may
occur.
-
Safe to use.
▶ When installing the valve at the end of the pipe,
pay attention to the flow direction.(Check the ◀
mark on the body of the union side. The union
part of the secondary side (downstream side) is
integrated with the body, so if it is installed at the
end of the pipe, it will be safer to use.)
Prohibition
Prohibition
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 18 -
[Procedure]
1) Wrap sealing tape around the male thread of the fitting, leaving
approximately 3mm at the end.
2) Loosen the cap nut by hand.
3) Remove the cap nut and body cap from the body.
4) Tighten the male thread of the fitting and the body cap until tight.
5) Screw in with a wrench or a motor wrench 1/2 to 1 turn to
prevent
damage to the body cap.
6) Check that the O-ring (A) is correctly installed in the body.
7) Bring the body cap and cap nut into contact with the body side so
that the O-ring (A) does not come off.
8) Tighten the cap nut by hand until it is tight.
9) Screw in the cap nut by 1/4 to 1/2 turn with a belt wrench to
prevent damage to the nut.
Preparations ▶ Sealing tape ▶ Belt wrench ▶ spanner or motor wrench
Sealing Tape
O-ring（A）

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 19 -
Socket type (adhesive)
Serious injury can result.
▶ When hanging or slinging a valve, pay sufficient attention to safety, and do not enter
under the load.
Fire or an explosion can result.
▶ Ensure adequate ventilation when using adhesives and do not use open flames in
the surroundings.
There is a danger of injury.
▶ The adhesive contains volatile solvents, so do not inhale odors directly.
The valve can be damaged, damaged, or leak.
▶ Do not apply too much adhesive.Excessive adhesive will flow into the valve.
▶ Do not strike the pipe when inserting it into the body cap.
▶ Do not overtighten the cap nut.
▶ Do not use a pipe wrench to tighten the cap nut.
There is a danger of injury.
▶ Be sure to perform safety inspections of the machine tool and power tool beforehand.
▶ Wear appropriate protective equipment according to the type of work being
performed.
▶ If the adhesive adheres to the skin, remove it immediately.
▶ If you feel worse or feel unusual when using the adhesive, promptly seek a doctor's
diagnosis and take appropriate action.
The valve can be damaged, damaged, or leak.
▶ The cap nut of this product is lightly tightened to make it easier to loosen.Be sure to
remove the body cap before installation.
▶ Install the product so that excessive stress such as tension, compression, bending or
impact is not applied to the piping or valve.
▶ Fix the body cap during piping work or disassembly and reassembly.
▶ When attaching the valve to the end of the pipe, be sure to attach the cap nut and
body cap on the secondary side (downstream side).
▶ Be careful when constructing under low temperature, as solvent vapor is less likely
to evaporate and tends to remain.
▶ After piping, open both ends of the pipe and use a blower (low-pressure type) to
ventilate to remove the solvent vapor.
▶ Use "ASAHI AV adhesive" depending on the material.
Prohibition
Prohibition
Forcing

Reference number: H-V027-E-20
[Userʼs Manual] Ball Valve Type21 ・ 21α 15 ~ 100mm
- 20 -
The valve can be damaged, damaged, or leak.
▶ Perform the water flow test after 24 hours or more have elapsed after completion
of bonding.
-
Safe to use.
▶ When installing the valve at the end of the pipe,
pay attention to the flow direction.(Check the ◀
mark on the body of the union side. The union
part of the secondary side (downstream side) is
integrated with the body, so if it is installed at the
end of the pipe, it will be safer to use.)
Forcing