PF-7000
PUMPING TRAP
Thank you very much for choosing the Yoshitake’s product. To ensure the correct and safe use of the product,
please read this manual before use. This manual shall be kept with care for future references.
The symbols used in this manual have the following meanings.
Warning
Caution
1. Specifications ···························································· 1
2. Dimensions and Weights ············································· 2
3. Structure ·································································· 2
4. Operation ································································· 3
5. Flow rate ·································································· 4
6. Installation
6.1 Piping example ·················································· 5-6
6.2 Warning and caution for installation ······················· 7-8
7. Operation procedure
7.1 Warning and caution for operation ··························· 9
7.2 Operation method ················································ 9
8. Maintenance
8.1 Warning and caution for maintenance and inspection · 10
8.2 Daily and Periodic inspection/Periodic replacement
8.3 Troubleshooting ············································· 12-13
8.4 Disassembly/assembly method
8.4.2 Disassembly method ······························· 14-15
9. Exploded view ·························································· 20
Warranty Information
INSTRUCTION MANUAL
This symbol indicates a potentially hazardous situation that, if not avoided,
could result in death or serious injury.
This symbol indicates a hazardous situation that, if not avoided, may result in
minor or moderate injury or may result in only property damage.
Table of Contents
8.2.1 Daily inspection ··········································· 10
8.2.2 Periodic inspection ······································· 11
8.2.3 Periodic replacement ···································· 11
8.4.1 Warning and caution for disassembly/assembly · 13
8.4.3 Assembly method ··································· 16-18
8.4.4 How to replace each part ······························· 19
.
-1-
■EPDT-292■
1. Specifications
Model PF-7000
25A (Condensate inlet: 25A / Condensate outlet: 25A)
Nominal size
Application
40A (Condensate inlet: 40A / Condensate outlet: 40A)
50A (Condensate inlet: 50A / Condensate outlet: 50A)
80A (Condensate inlet: 80A / Condensate outlet: 50A)
Steam condensate / Non-hazardous fluid
Driving fluid
Max. driving pressure
Max. working temperature
Body
Material
Trim parts
Float (P)
Connection
Check valve at inlet side
Check valve at outlet side
Steam / Air
0.8 MPa *1
180°C
Ductile cast iron
Stainless steel
Stainless steel
JIS Rc screwed
Externally attached *2
Externally attached *2
*1 The most appropriate value of driving pressure is back pressure at outlet side + 0.1 to 0.2 MPa.
*2 Attach an optional check valve (SCV-2 or SCV-3) on inlet and outlet side of the product.
Please confirm that the indications on the product correspond with the
Caution
specifications of the ordered product model before use.
* If they are different, please contact us without using the product.
-1-
■EPDT-292■
2. Dimensions and Weights
*
Bush is attached at condensate inlet for the product of size 50A, and at condensate inlet and outlet for size
40A or less.
* The unit is mm.
Size d1 d2 L
25A Rc1 Rc1 544 92
40A Rc1-1/2 Rc1-1/2 549 92
50A Rc2 Rc2 525 91
80A Rc3 Rc2 500 90
Driving
fluid port
Rc1/2 Rc1
Vent port
Fig. 1: Dimensions
3. Structure
No. Part name
1 Body
2 Cover
4 Vent valve P
5 Vent valve seat
6 Inlet valve P
9 Float
10 Cap
12 Hex bolt
13 Hex bolt
14 Square head plug
15 Eye bolt
16 Name Plate
Fig. 2: Structure
Weight
(kg)
-2-
■EPDT-292■
4. Operation
<State 1>
Condensate flows into body [1] via the condensate inlet and then float [9] moves upward due
to buoyancy. (See Fig. 3.) In this state, vent valve part of vent valve P is open and inlet valve
part of inlet valve P is closed.
Enlarged view
Fig. 3
<State 2>
When condensate level rises and float [9] reaches the height at which vent valve part of vent
valve P [4] closes, inlet valve part of inlet valve P [6] opens, and driving pressure enters body
[1]. Condensate inside body [1] is transferred to condensate outlet and discharged. (See Fig.
4.) When condensate is discharged, float [9] moves downward in line with water level in body
[1]. When it drops to the height at which vent valve part of vent valve P [4] opens, inlet valve
part of inlet valve P [6] is closed. Then, internal pressure is released by vent valve, returning
to the above state 1.
Enlarged view
Fig. 4
-3-
■EPDT-292■
5. Flow rate
<Driving fluid: steam>
Driving pressure
Driving pressure
Back pressure
Driving pressure
<Driving fluid: air>
Driving pressure
Back pressure
Driving pressure
* Flow rate described above indicates condensate volume when condensate flow-in height is
1,000 mm above the bottom of the product. (See 6.1 Piping example)
Discharge capacity varies depending on condensate flow-in height. Multiply the volume by the
following factors according to condensate flow-in height.
* The height below is the level above the bottom of the product
Driving
fluid
Condensate flow-in height [mm]
800 1000 1200 1400
Steam 0.85 1.00 1.05 1.15
Air 0.85 1.00 1.15 1.30
Discharge capacity varies depending on size of condensate inlet and outlet. Multiply the volume
by the following factors according to size.
Driving
fluid
Steam
Air
Size (Condensate inlet – outlet)
80A-50A 50A-50A 40A-40A 25A-25A
1.00 0.90 0.70 0.35
1.00 0.95 0.70 0.30
-4-
■EPDT-292■
6.1 Piping example
<Open system>
6. Installation
No.
1
2
3
4
5
Fig. 5
Name No.
Pumping Trap
6
PF-7000
Strainer
SY-5 15A
(80 mesh)
Steam trap
TD-10NA 15A
Check valve
SCV-2 or 3 15A SCV-3 80A
Sight glass
SLM-1S 15A SCV-2 or 3 50A
7
8
9
10
Name No. Name
Pressure reducing
valve GD-30 15A
(GD-1000T 15A
if driving fluid is air)
Strainer
SY-5 15A
(80 mesh)
Strainer
SY-40 80A
(80 mesh)
Check valve
Check valve
Sight glass
11
SLM-1S or 1F 50A
-5-
■EPDT-292■
<Closed system>
No.
Pumping Trap
1
2
3
TD-10NA 15A
4
SCV-2 or 3 15A
5
SLM-1S 15A SCV-2 or 3 50A
Fig. 6
Name No.
6
PF-7000 GD-30 15A SLM-1S or 1F 50A
Strainer
SY-5 15A
(80 mesh)
Steam trap
Check valve
Sight glass
7
8
9
10
Name No.
Pressure reducing
valve
Strainer
SY-5 15A
(80 mesh)
Strainer
SY-40 80A
(80 mesh)
Check valve
SCV-3 80A
Check valve
Name
Sight glass
11
Check valve
12
SCV-2 or 3 15A
-6-
■EPDT-292■
Loading...