IHARA PYB Series Pipe-Welded Y-Type Bellows Seal Valve

Product Made in Japan
Manufacturer:  IHARA SCIENCE CORPORATION
Model: PYB Series

PYB Pipe-Welded Y-Type Bellows Seal Valve (1MPa)

Features

Pipe-Welded Y-Type Bellows Seal Valve(PYB Series) have being developed to reduce troubles (※1)
due to the surface defects of conventional cast steel bodies.
At the same time, delivery lead times become much shorter.
The valve body consists of steel pipes, and achieves significant weight reduction and high cleanliness.
Equipped with a metal bellows seal, it achieves high airtightness and high durability.
Achieves high performance of Cv value through Y-type structure and high lift design.
Wet contact parts are oil-free and treated by precision cleaning.
Carry out assembly, inspection, and packaging. in the clean room (class 1000).
Compared with conventional cast steel valve, achieve short lead time as the body is made of steel pipes.
(※1) Poor appearance due to pin holes, cavities, residual oil, particles generation, etc.

Specification

Nominal size40A50A65A80A100A125A
150A200A250A300A
Working pressureVac ~1 MPa
Working temperature-10~+80°C
Leak amountInternal *2^1×10 6Pa*m3/sec.
External^5×10 l0Pa’m3/sec.

Main Materials

Parts NameMaterial
1Body316L SS
2DiskPTFE
3Disk Holder316L SS
4Bellows316L SS
5Bellows Flange316L SS
6GasketPCTFE
7Bonnet304 SS
8HandleDuctile Iron

 

Model Numbering

PYB – ① ② – 6LCT – ③

Ex.) PYB-50PW5-6LCT-EP [50A Sch.5S Pipe BW, PTFE Disk, PCTFE Gasket, Electropolishing]

MarkSize*MarkSize*
4040A125125A
5050A150150A
6565A200200A
8080A250250A
100100A300300A

MarkConnection *4)
PW5Pipe (BW)Sch.5S
PW10SchJOS

MarkInternal Finish
EPEP Grade (≦Ra0.18μm)
BABA Grade (≦Ra0.8μm)

(※4) Other connections are available. Contact us.

Dimensions

PYB Series

SizeHLLIDtWLift
Sch.5SSch.WS
40A2142355048.61.652.812526
50A2492604960.51.652.816034
65A28931053.576.32.13.018044
80A3654007789.12.13.025052.5
100A40647077.5114.32.13.028064
125A46655073139.82.83.430085.5
150A53364073.5165.22.83.435588.5
200A62580084216.32.84.0400100.5
250A1005980112.5267.43.44.0600150
300A10821100107.5318.54.04.5600170

(※) Sizes of 250A~300A are different structure from above drawing.
High Flow Types, Pneumatic Operation, Purge Ports are available upon requests.

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