Overall dimensions and technical information are provided solely for informative purposes and may be modified without notice 174 Ball taps - Mini Series VSTT Pneumatic fittings Ball taps Additional technical informations Each VSTT taps series batch is tested according to severe cyclics “lot breaker” controls along all the production period, which include shape observation, leakage verification, functionality, at the working pressure of 8 bar. Then all samples taken from the lot are tested by a traction machine which simulate a breaking pressure of 50 bar. Here below are indicated the traction loads (in Newton) for each size: Important note The values refer to the resistance of the crimping gripper, “core part” as per the two fittings series, the brass RAP and the technopolymer Tecno-RAP, whereby homogeneous. The breaking experimental values measured, according to the diameter, were from 1.2 to 2.5 times higher. Further to all the necessary assessments on the use of the VSTT taps in operating conditions different from how suggested in the initial technical sheet must be considered, with reference to temperatures, the nominal data regarding the type of the used tube and the limit imposed by the most critical component. Acetal resins with which some components are made, and the O-ring itself, suggest precise range of usage. Specifically to the NBR O-rings the supplier declares a fork between -25°C and +100°C. Additional information regarding the working temperatures: Tube diameter Breaking load Ø4 63 N Ø6 141 N Ø8 251 N Working pressure and breaking pressure (bar) at different temperatures Example T-20°C T-20°C T+23°C T+23°C T+60°C T+60°C Tube 6x4 colored Working P bar Breaking P bar Working P bar Breaking P bar Working P bar Breaking P bar TPU 18,7 74,8 10,0 40,0 5,2 20,8 PA11 37,4 149,6 20,0 80,0 10,4 41,6 PA12 48,6 168,3 26,0 90,0 10,4 36,0 PE 18,7 74,8 10,0 40,0 5,0 20,0 Tube/tube ball valve VSTT ART. COD. A L Ø TUBE ØB VSTT0404 23 46 4 9 1 39,50 VSTT0606 23 50 6 11 1 37,50 VSTT0808 23 52 8 13 1 39,30 ØB ØB L ØTUBE ØTUBE A
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