Vacuum Pneumatic KF In-Line Valve (SUS304, Double Acting, Bellows Seal)

Model: PVVP-07(D)

PVVP-07(D) is a vacuum in-line valve combining a bellows-seal construction with a pneumatic double-acting actuator. It supports sizes from NW16 up to NW160 and undergoes 100% helium leak testing prior to shipment, and is used for high-speed automatic line on/off in semiconductor, display, solar, and laboratory processes.

Features

• Compact design for easy installation in confined spaces
• Internal oil removal (CLEAN AND OIL FREE)
• 100% helium leak tested
• Custom manufacturing available per customer needs
• Available in sizes NW16-160
• Bellows seal with high tightness and durability

Specifications

Frequently Asked Questions

How do I choose between an inline valve and an angle valve?

An inline valve has a straight flow path and is suited for line shutoff in the middle of straight piping. An angle valve has a 90-degree turn in the flow path and is suited for direct mounting on chambers or pumps to reduce pipe length. Selection depends on piping layout and installation space.

How do I choose between double-acting and single-acting?

Double-acting offers fast response and large torque margin, making it suitable for high-frequency automatic control and sequence control, but position retention is uncertain when pneumatic pressure is lost. Single-acting allows fail-safe return and is suitable for lines where safety shutoff is critical.

What advantages does a bellows seal provide in vacuum lines?

A bellows seal encloses the entire stem in a metal corrugated tube, minimizing contact with outside air. It is structurally less affected by seal aging in repeated-use environments and provides margin in inspection cycle planning even in corrosive gas environments.

What accessories can be attached to pneumatic valves?

We can supply integrated packages combining limit switch boxes, solenoid valves, and air filter regulators tailored to site requirements.