Series S | Thermodynamic Disc Steam Traps

Steam Traps Series S | Thermodynamic Disc Steam Traps
S55H
High pressure specification, Dedicated to steam main lines

Features/Applications
Features
Compact and cost effective design
It is space saving, simple mechanism with very few moving components.
Easy maintenance
The minimum amount of moving parts and easy in-line access ensure easy and fast maintenance.
Flexible installation
This product can be installed either horizontally or vertically.
Auto blow off and air vent
Thanks to a bimetal ring, the trap smoothly discharges initial air and cold condensate. (Auto blow-off mechanism)
Tailored design
Manufacturing with custom face-to-face dimensions is possible.
Typical applications
Dedicated to high temperature and high pressure steam main lines
Dimensions/Weight
Dimensions/Weight
Screwed / Socket Weld

Size | Dimensions (mm) | Dimensions (in) | Weight | |||||||
L | H1 | H2 | W | L | H1 | H2 | W | (kg) | (lb) | |
1/2” | 70 | 60 | 52 | 45 | 2.8 | 2.4 | 2.1 | 1.8 | 1,0 | 2.2 |
3/4” | ||||||||||
1” | 75 | 65 | 56 | 3.0 | 2.6 | 2.2 | 1,2 | 2.6 |
Flanged

JIS,ASME
Size | Dimensions (mm) | Dimensions (in) | Weight (kg) | Weight (lb) | ||||||||||||||||
L | H1 | H2 | W | L | H1 | H2 | W | JIS(FF,RF) | ASME/JPI(RF) | JIS(FF,RF) | ASME/JPI(RF) | |||||||||
10K,16K | 20K | 30K,40K | 150lb | 300lb | 600lb | 10K,16K | 20K | 30K,40K | 150lb | 300lb | 600lb | |||||||||
1/2” | 140 | 60 | 52 | 45 | 5.5 | 2.4 | 2.1 | 1.8 | 2,6 | 2,8 | 4,0 | 2,6 | 3,1 | 3,2 | 5.7 | 6.2 | 8.8 | 5.7 | 6.8 | 7.1 |
3/4” | 165 | 6.5 | 3,1 | 3,3 | 4,4 | 3,1 | 4,0 | 4,2 | 6.8 | 7.3 | 9.7 | 6.8 | 8.8 | 9.3 | ||||||
1” | 175 | 6.9 | 4,2 | 4,5 | 5,6 | 4,2 | 5,5 | 5,7 | 9.3 | 9.9 | 12.4 | 9.3 | 12.1 | 12.6 |
DIN PN40 PN100
Size | Dimensions (mm) | Dimensions (in) |
Weight DIN PN40 |
Weight PN100 |
||||||||
L | H1 | H2 | W | L | H1 | H2 | W | (kg) | (lb) | (kg) | (lb) | |
DN15 | 150 | 60 | 52 | 45 | 5.9 | 2.4 | 2.0 | 1.8 | 3,1 | 6.8 | 3,7 | 8.2 |
DN20 | 3,7 | 8.2 | 5,3 | 11.7 | ||||||||
DN25 | 160 | 6.3 | 4,4 | 9.7 | 6,3 | 13.9 |
*Customized face-to-face dimensions on request.
*Please contact MIYAWAKI for further information.
Specifications
Model | Connection |
Max. operating pressure |
Max. operating pressure differential |
Max. operating temperature |
Body material |
||||
Type | Size |
PMO (MPa) |
PMO (psig) |
(MPa) | (psig) |
TMO (℃) |
TMO (℉) |
||
S55H |
Screwed Rc,NPT |
1/2” | 4,6 | 667 | 4,6 | 667 | 425 | 800 |
Forged steel A105 |
3/4” | |||||||||
1” | |||||||||
S55HF |
Flanged FF,RF |
1/2” | |||||||
3/4” | |||||||||
1” | |||||||||
S55HW |
Socket Weld SW |
1/2” | |||||||
3/4” | |||||||||
1” |
●Maximum allowable pressure (PMA): 4,6MPa (667psig)
PMA is the pressure that can be tolerated by pressure-resistant parts (body).
●Maximum allowable temperature (TMA): 425℃ (800℉)
TMA is the temperature that can be tolerated by pressure-resistant parts (body).
Discharge Capacity

Download
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Features
Compact and cost effective design
It is space saving, simple mechanism with very few moving components.
Easy maintenance
The minimum amount of moving parts and easy in-line access ensure easy and fast maintenance.
Flexible installation
This product can be installed either horizontally or vertically.
Auto blow off and air vent
Thanks to a bimetal ring, the trap smoothly discharges initial air and cold condensate. (Auto blow-off mechanism)
Tailored design
Manufacturing with custom face-to-face dimensions is possible.
Typical applications
Dedicated to high temperature and high pressure steam main lines
Dimensions/Weight
Screwed / Socket Weld

Size | Dimensions (mm) | Dimensions (in) | Weight | |||||||
L | H1 | H2 | W | L | H1 | H2 | W | (kg) | (lb) | |
1/2” | 70 | 60 | 52 | 45 | 2.8 | 2.4 | 2.1 | 1.8 | 1,0 | 2.2 |
3/4” | ||||||||||
1” | 75 | 65 | 56 | 3.0 | 2.6 | 2.2 | 1,2 | 2.6 |
Flanged

JIS,ASME
Size | Dimensions (mm) | Dimensions (in) | Weight (kg) | Weight (lb) | ||||||||||||||||
L | H1 | H2 | W | L | H1 | H2 | W | JIS(FF,RF) | ASME/JPI(RF) | JIS(FF,RF) | ASME/JPI(RF) | |||||||||
10K,16K | 20K | 30K,40K | 150lb | 300lb | 600lb | 10K,16K | 20K | 30K,40K | 150lb | 300lb | 600lb | |||||||||
1/2” | 140 | 60 | 52 | 45 | 5.5 | 2.4 | 2.1 | 1.8 | 2,6 | 2,8 | 4,0 | 2,6 | 3,1 | 3,2 | 5.7 | 6.2 | 8.8 | 5.7 | 6.8 | 7.1 |
3/4” | 165 | 6.5 | 3,1 | 3,3 | 4,4 | 3,1 | 4,0 | 4,2 | 6.8 | 7.3 | 9.7 | 6.8 | 8.8 | 9.3 | ||||||
1” | 175 | 6.9 | 4,2 | 4,5 | 5,6 | 4,2 | 5,5 | 5,7 | 9.3 | 9.9 | 12.4 | 9.3 | 12.1 | 12.6 |
DIN PN40 PN100
Size | Dimensions (mm) | Dimensions (in) |
Weight DIN PN40 |
Weight PN100 |
||||||||
L | H1 | H2 | W | L | H1 | H2 | W | (kg) | (lb) | (kg) | (lb) | |
DN15 | 150 | 60 | 52 | 45 | 5.9 | 2.4 | 2.0 | 1.8 | 3,1 | 6.8 | 3,7 | 8.2 |
DN20 | 3,7 | 8.2 | 5,3 | 11.7 | ||||||||
DN25 | 160 | 6.3 | 4,4 | 9.7 | 6,3 | 13.9 |
*Customized face-to-face dimensions on request.
*Please contact MIYAWAKI for further information.
Model | Connection |
Max. operating pressure |
Max. operating pressure differential |
Max. operating temperature |
Body material |
||||
Type | Size |
PMO (MPa) |
PMO (psig) |
(MPa) | (psig) |
TMO (℃) |
TMO (℉) |
||
S55H |
Screwed Rc,NPT |
1/2” | 4,6 | 667 | 4,6 | 667 | 425 | 800 |
Forged steel A105 |
3/4” | |||||||||
1” | |||||||||
S55HF |
Flanged FF,RF |
1/2” | |||||||
3/4” | |||||||||
1” | |||||||||
S55HW |
Socket Weld SW |
1/2” | |||||||
3/4” | |||||||||
1” |
●Maximum allowable pressure (PMA): 4,6MPa (667psig)
PMA is the pressure that can be tolerated by pressure-resistant parts (body).
●Maximum allowable temperature (TMA): 425℃ (800℉)
TMA is the temperature that can be tolerated by pressure-resistant parts (body).

* Membership registration is required to download the documents.