MIYAWAKI F1 User manual

ANTI-FREEZING VALVE
USER'S MANUAL

SAFETY GUIDE
The model F1/F1B is an anti-freezing valve which discharges
residual condensate out of steam traps and pipe lines when the
operation is stopped. The model F1B is equipped with a ball
valve.
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 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
Model F1B
Model F1
Model
Connection Operating pressure
(MPa) Maximum operating
Body
material
Dimensions
(mm) Weight
Connection
Nominal
dia. (A)
Cracking Closing
Pressure
(MPa)
Temperature
(°C) L W (kg)
F1B Threaded
8
0.01~0.04 0.02~0.05
1.0 183 Brass
(C3771)
113
27
0.19
10 119 0.23
F1 8 ∙ 10 1.6 220 52 0.13
 Year of production: The two leftmost digits in the four-digit 'S No.' on the plug (3) are the last
two digits of the year of production.
 Flow direction: Shown by an arrow
 Model symbol: Showing the product model name
 Pressure conversion: 1 MPa = 10.197 kgf/cm2

2
2 CONSTRUCTION DETAILS
1. Body
2. Valve
3. Valve seat
4. Spring
5. Screen
6. Guide
7. Spring
8. Gasket
9. Name label
10. Ball valve (F1B only)
11. Nipple (F1B only)

3
3 INSTALLATION
(1) Make the discharge pipe as short as possible.
(2) Maintain a slight slope to the line, so that any condensate will flow smoothly.
(3) Provide the discharge pipe with thermal insulation if possible.
(4) When the connection diameter is bigger than 15A (1/2”), use a bushing to
adjust the size.
<Applicable models and example of installation>
Applicable models
(1) Model F1B (8A)
Model ES5
Model G11N / G12N
(2) Model F1B (10A)
Model ES8N
Model S31N
(3) M
odels installed by connecting a bushing to Model F1B valves (10A)
- Bushing size: Rc 3/4 × Rc 3/8
-
Bushing size: Rc 3/4 × Rc 3/8
Model ER105
Model ES10

4
4 MAINTENANCE
WARNING
 Before removing the trap from the pipe or disassembling it, be sure to close the
isolation valves on the inlet and outlet sides of the anti-freezing valve. Then,
release the residual pressure from the anti-freezing valve (make sure that the
pressure in the body is equal to the atmospheric pressure). After it has fully
cooled down (after the temperature of the main body has reached ambient
temperature), confirm for safe conditions and then begin work.
CAUTION
 When replacing parts, make sure the replacement parts are supplied by
Miyawaki.
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 procedure
1) When the valve seat (3) is removed, the internal parts (screen (5), spring (4), valve
(2), guide (6), and spring (7)) can be removed.
*The guide (6) and the spring (7) can be removed together.
2) Clean and check each part.
Set the body in a vertical position and assemble the internal parts.
4.1.2 Assembling procedure
1) Insert the spring (4) into the valve seat (3) and attach the screen (5).
2) Place the valve (2) on top of the spring (4) and place the guide (6) (the spring (7) is
combined with the guide) on top of the valve.
3) Tighten the valve seat (3) so that the spring (7) properly fits inside the body (1).
* The proper torque for the valve seat (3) is as shown in the following table.
No. Part name Width across flats
Tightening torque
3 Valve seat 24 mm (0.94”) 30 N·m

5
(1) Body
(2) Valve
(3) Valve seat
(4) Spring
(5) Screen
(6) Guide
(7) Spring
(8) Gasket
(1)
(7)
(6)
(2)
(4)
(5)
(8)
(3)

6
5 TROUBLESHOOTING
Problem Possible cause Solution
Clogging
1) The inlet valve is closed (F1B). 1) Open the inlet valve.
2) The pressure on the inlet side
is equal to the cracking
pressure or higher (normal
closing condition).
2) Reduce the pressure on the
inlet side to the cracking
pressure or lower.
3) The screen (5) is clogged with
dust, scales, etc.
3) Clean the screen and remove
the dust, scales, etc.
Abnormally high
closing pressure
1) The pipe diameter on the
outlet side is smaller than the
diameter of the connection.
1) Change the pipe diameter on
the outlet side equal to the
diameter of the connection.
2) The screen (5) is clogged with
dust, scales, etc.
2) Clean the screen and remove
the dust, scales, etc.
Steam blowing or
valve leakage
1) The installation direction of the
inlet or outlet is incorrect.
1) Install properly in accordance
with the direction of flow.
2) Dust, scales, etc. adhere to
the sealing surface of the
valve (2) and the valve seat
(3). Alternatively, the sealing
surface is damaged.
2) Disassemble and clean the
sealing surface. In case of
damage, replace the valve (2)
and the valve seat (3) with
new ones.

7
6 WARRANTY
6.1 Warranty period
The warranty period shall last 12 months from the date of product delivery.
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
S.No. □□□□
Represents the day.
Represents the month.
Represents the year. (last two digits of the
year according to the Western calendar)
Month designation system
Month
Symbol
Month
Symbol
Month
Symbol
Month
Symbol
1
1
4
4
7
7
X
10
2
2
5
5
8
8
Y
11
3
3
6
6
9
9
Z
12
Day designation system
Symbol
Day
Symbol
Day
Symbol
Day
Symbol
Day
1
1
9
9
H
17
Q
25
2
2
A
10
J
18
R
26
3
3
B
11
K
19
S
27
4
4
C
12
L
20
T
28
5
5
D
13
M
21
U
29
6
6
E
14
N
22
V
30
7
7
F
15
O
23
W
31
8
8
G
16
P
24
Example of serial number designation
1 7 1 1 → Jan 1, 2017
2
9X
M
→
Oct 21, 2029

9
8 GUIDANCE FOR READING SPECIAL PRODUCT NAME
〇〇〇-○○-□
Special symbol:
Symbol apply only to special product
(Please refer to table 1 for details)
English letter after “-“
Model symbol:
Product model number
Table 1 Symbol description
Suffix Special contents
A Trap for high-pressure gas installed property (only for Gas Trap)
C Blow valve attached
K Change of gasket
L Special face to face dimension
M Change of parts material
P, T Change of operating pressure, temperature, condensate capacity, etc
R Change of screen mesh
V Change of air vent
X Other than mentioned above or complex of special contents above

For any questions about the product that you purchased or about the details in this user’s
manual, please contact the following.
© 2017 MIYAWAKI INC.
This user’s manual may not be reproduced or copied in whole or in part, without the
written consent of MIYAWAKI INC.
Some special specifications of the product you have, may found to be different from the
ones in the user's manual. If you have any question, please contact MIYAWAKI, our
local authorized agent, or the place where you purchased.

INTERNATIONAL SALES DEPT.
2-1-30, Tagawakita, Yodogawa-ku, Osaka, 532-0021, Japan
Tel: [phone]
www.miyawaki.net e-mail: [email protected]
EU Importer and Authorized representative:
MIYAWAKI GmbH
Birnbaumsmühle 65, 15234 Frankfurt (Oder), Germany
Tel: [phone]
www.miyawaki.net e-mail: [e-mail]
China Importer and Authorized representative:
MIYAWAKI WEST Co.,ltd
Room 1705, No.1, Building,No.311, Yanxin Road, Huishan Economic Development Zone,
Wuxi, Jiangsu, China
Tel: [phone]
www.miyawaki-inc.com.cn e-mail: [email protected]n
808118-00 1710
F1/F1B