Axial expansion joints and metal flexible hoses for vacuum technology

General

Spiroflex designs metal flexible hoses and expansion joints for vacuum technology for wide variety of vacuum applications. Our development and research, modern manufacturing equipment and facilities, highly qualified and experienced personnel ensure very good quality.

Metal flexible hoses

Metal flexible hoses for vacuum systems are designed as single-ply with relatively thin walls. Their small adjusting forces and moments produce very slight load on connecting flanges.

Axial expansion joints

Our axial expansion joints for vacuum are designed and developed in close cooperation with our customers. Convoluted parts of expansion joints are usually single ply bellows with relatively thin walls. Their low spring rates and moments in combination with very good machined connecting flanges ensure absolute tightness during operation.

Flexible hose with KF – small flanges

Expansion joint with LF – large flanges

Connections

We produce flexible hoses and expansion joints with connections as follows:

• KF – small flanges (as in ISO 2861/1; diameters DN10 – DN50)
• LF – large flanges (as in ISO 1609, and respectively DIN 28404; diameters DN65 – DN1000)
• customized flanges according to customer requests

Testing

^{Each vacuum product is helium leak tested, usually at leak rate < 1×10-9 mbar•l•s-1}

Axial expansion joints for vacuum DN50

Metal bellows for oil expansion tested with helium sniffer probe