Diaphragm valve | PKDV Series(Pneumatic Type)

The PKDV series is most suitable for applications to deal with high-pressure fluid. This series is designed to have a seat holder to minimize the dead space on the seat bottom side.
It has a forged body made of SUS316L (single melt) and is compatible with various types of fitting (metal seal, double ferrule and butt weld ).

Model specifications for the order request.

Specification

Size 1/4”
Cv value 0.1
Max.Operating Pressure 16.2MPa(G) / 21MPa(G) (Option)
Operating Temp. Range PCTFE : -10～60℃ / PI : -10～150℃
External Leakage Inboard ≦3×10-12 Pa・m3 ／sec Helium
Across Seat ≦3×10-10 Pa・m3 ／sec Helium

Material

Part name Material
①Body SUS316L
②Seat PCTFE / PI
③Seat Holder SUS316L
④Diaphragm Ni-Co Alloy
⑤Actuator Aluminum

Model

Male Metal Seal

Unit(mm)
Size A B C D E F G H
1/4″ 11 87 40 52 17 24 25 Rc1/8

Female Metal Seal

Unit(mm)
Size A B C D E F G H
1/4″ 11 87 40 66 17 24 25 Rc1/8

Double Ferrule

Unit(mm)
Size A B C D E F G H
1/4″ 11 87 40 (63.5) 17 24 25 Rc1/8

Butt Weld Long

Unit(mm)
Size A B C D E F G H
1/4″ 11 87 40 47 17 24 25 Rc1/8

Butt Weld Short

Unit(mm)
Size A B C D E F G H
1/4″ 11 87 40 44.4 17 24 25 Rc1/8
※Specification are subjected to change without prior notice.