Miyawaki AT51 Air Vents for Steam

Manufacturer: MIYAWAKI Inc.
Model: AT51

Features

Quick startup
Swiftly discharges the initial cold condensate and air.

Superb durability
The MIYAWAKI SCCV (Self Closing and Centering Valve) System increases durability by ensuring soft closing during operation. The system includes a free-rotating valve that centers and aligns itself with the condensate flow, which allows it to fit perfectly in the valve seat, even under extreme high-pressure conditions. As a result, it minimizes wear and erosion of the valve components, offering enhanced longevity and performance.

Accurate operation in high pressure and high temperature ranges, and in the presence of superheated steam.

Easy maintenance
Internal components being grouped into units make it maintenance easy.

Typical applications

Suitable for steam main lines, trace lines, and other such applications.

Dimensions/Weight

Screwed / Socket Weld

Size Dimensions (mm) Dimensions (in) Weight
L H1 H2 W L H1 H2 W (kg) (lb)
1/2” 130 155 25 100 5.1 6.1 1.0 3.9 5,7 12.6
3/4”
1”

Flanged

AT51

Size Flange standards Dimensions (mm) Dimensions (in) Weight
L H1 H2 W L H1 H2 W (kg) (lb)
1/2” JIS
(RF)
20K 200 155 25 100 7.9 6.1 1.0 3.9 7,3 16.1
30K 8,4 18.5
40K 8,7 19.2
63K 220 8.7 9,6 21.2
ASME/JPI
(RF)
150lb 200 7.9 6,7 14.8
300lb 7,2 15.9
600lb 7,3 16.1
900lb 220 8.7 9,6 21.2
3/4” JIS
(RF)
20K 210 8.3 7,7 17.0
30K 8,9 19.6
40K 9,2 20.3
63K 230 9.1 11,1 24.5
ASME/JPI
(RF)
150lb 210 8.3 7,7 17.0
300lb 8,2 18.1
600lb 8,5 18.7
900lb 230 9.1 10,9 24.0
1” JIS
(RF)
20K 240 9.5 9,2 20.3
30K 10,1 22.3
40K 10,5 23.2
63K 12,1 26.7
ASME/JPI
(RF)
150lb 8,3 18.3
300lb 9,4 20.7
600lb 9,6 21.2
900lb 13,3 29.3
Size Flange standards Dimensions (mm) Dimensions (in) Weight
L H1 H2 W L H1 H2 W (kg) (lb)
DN15 DIN PN63/PN100 210 155 25 100 8.3 6.1 1.0 3.9 9,4 20.7
DN20 230 9.1 11,4 25.1
DN25 12,1 26.7

*You can easily manufacture with custom face-to-face dimensions for flanged connections by adjusting the design and production process. This approach allows for greater flexibility and ensures that specific project requirements are met efficiently.
*Please do not hesitate to inquire about the face-to-face dimensions that can be manufactured.

Specifications

Model Connection Max. operating pressure Max. operating pressure differential Max. operating temperature Controlled temperature range Standard set temperature Body material
Type Size (MPa) (psig) (MPa) (psig) TMO

(℃)

TMO

(℉)

(℃) (℉) (℃) (℉)
TB51-45 Screwed
Rc,NPT
1/2” 4,5 652.5 4,5 652.5 425 797 100 – 220 212 – 428 180
(at 2,1MPa)
356
(at 304.5psig)
Forged steel
A105
3/4”
1”
TB51-65 1/2” 6,5 942.5 6,5 942.5 100 – 240 212 – 464 220
(at
4,4MPa)
428
(at 638psig)
3/4”
1”
TB51F-45 Flanged
RF
1/2” 4,5 652.5 4,5 652.5 100 – 220 212 – 428 180
(at 2,1MPa)
356
(at 304.5psig)
3/4”
1”
TB51F-65 1/2” 6,5 942.5 6,5 942.5 100 – 240 212 – 464 220
(at 4,4MPa)
428
(at 638psig)
3/4”
1”
TB51W-45 Socket Weld

SW

 

1/2” 4,5 652.5 4,5 652.5 100 – 220 212 – 428 180

(at 2,1MPa)

356
(at 304.5psig)
3/4”
1”
TB51W-65 1/2” 6,5 942.5 6,5 942.5 100 – 240 212 – 464 220

(at 4,4MPa)

428
(at 638psig)
3/4”
1”

*It is possible to change the factory default set temperature. Specify the operating pressure and set temperature.

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