Compression ratio: 
- recommended: P2/P0 = 2.5
- maximum: P2/P0 = 4

Mechanical life: the number of cycles is inversely proportional to the increase of the compression ratio.
For pulsation dampener applications, the nitrogen value must be from 60% to 80% of the working pressure also in relation with the type of pump and the working temperature.

Warranty: see dedicated page
Spare parts: see dedicated page

Also available:
- Connection with flange ANSI B16.5 or UNI/DIN
- Special connection on request
- Integral flange connection
- High pressure execution, 15bar
- Maintenance Free (HSTP-SMF)

- HSTP = PP = +0°C/+70°C
- HSTPVC = PVC-U = +0°C/+50°C
- HSTPVCC = PVC-C = -5°C/+60°C
- HSTPVDF = PVDF = -20°C/+85°C