Born from the collaboration between TopMax Elaborazioni (for the dimensional specifications) and Pirani Springs (OEM and technical consultant), the PVP (Progressive Variable Pitch) springs are made in Italy and are sized and tested using the double bearing on the spring guide and under the piston head on 300.00mm barrels. The line of PVP and RCS springs from TopMax Elaborazioni is entirely made by Pirani Springs to our specifications to combine two brands of Made In Italy excellence and quality in the AirSoft sector.
Technical Specifications of the PVP Spring 110m/s:
Spring length – 170.00mm,
Spring external diameter – 14.30mm.
Treatments:
Pre-hardening treatment of steel,
Burnishing,
Grinding on the ends (for perfect coplanarity with the spring-guide and bearing surfaces of the piston head,
Progressive variable pitch of the turns,
Product stabilization heat treatment.
We recommend using the spring in the configuration with a bearing on the spring guide and one under the piston head, to obtain the indicated performances and keep the life as constant as possible over time.
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