Page 701 - Schmalz - Vacuum Components

10_Kap_Filter_Auswahlhilfe_EN_Layout 1 18.02.16 10:39 Seite 701
PA01019111_inh_EN.pdf
Filters and Connections
Selection Aid
PA01019111_inh_EN.pdf PA01019111_inh_EN.pdf

Overview Flow Resistance in Hoses
Schmalz - The Company

D = 32 mm

Vacuum Knowledge
D · 0.71 ≈ 23 mm

Vacuum
D · 0.5 ≈ 16 mm Suction Cups
D · 0.35 ≈ 11 mm

D · 0.25 ≈ 8 mm
Special Grippers
D · 0.18 ≈ 6 mm

Aid for the dimensioning of distribution hoses:
Example: A hose with an internal diameter D = 32 mm has the same internal flow rate as 32 hoses with an internal diameter of Vacuum Grip- ping Systems
6 mm or 4 hoses with an internal diameter of 16 mm.

Mounting Elements
Checklist for Selection of Hoses

Criterion/material PVC PU PE PA
Vacuum Generators
Resistance to oil Good Excellent Good Very good

Resistance to fuels and Medium Very good Medium Good
natural gas
Valve Technology
Resistance to weathering Medium Excellent Medium Medium
Switches and Monitoring
Behaviour at low Freezes at -20 °C Similar to a hard plastic at Freezes at -50 °C Freezes at -40 °C
temperatures -35 to -40 °C, but no
embrittlement

Behaviour at high Withstands 70 °C for long Withstands 80 °C for long Withstands 70 °C for long Withstands 85 °C for long
temperatures periods periods, for short periods up periods periods Filters and Connections
to 100 °C

Dynamic stress resistance Tensile strength: good; Tensile strength: excellent Tensile strength: very good Tensile strength: very good
Ductile yield: very good; Ductile yield: excellent, very Ductile yield: very good, Ductile yield: good,
suitable for static installation high elasticity, excellent cree- suitable for static installation suitable for static installation Services
page resistance, thus suitable
for trailing cable installations

Contact

Resistance to abrasion Good Excellent Good Good

Index of Products

701

PA01019111_inh_EN.pdf