fr - DAFRAM paper has been selected for Valve World Conference 2016 by the Steering Committee. Marco Sparisci (Lead Product Engineer, R&D Coordinator) presented how DAFRAM has approached the very crucial aspect of coatings for components of ball valves dedicated to severe service and very special applications.

Paper title:
Innovative experimental evaluation of hardcoatings for ball valves.

Abstract:
Over the last years, a thorough knowledge of coatings properties has become a key instrument for ball valves manufacturers to offer the best solution for each operating environment.

DAFRAM and 3P Engineering designed and built a special testing machine to collect reliable information about existing coatings behaviour and to test new solutions for ball valves.
In order to properly simulate the real working conditions of ball valves, kits (ball and seats) are cycled on the bench through a specified number of strokes.
The tightness of sealing surfaces is checked periodically during stroke cycling. Testing capabilities include also cycling in presence of abrasive particles (e.g. sand) and high temperature conditions (up to 650°C). Specifically designed postprocessor allows to collect and manage 2.5 kHz high frequency measurements on torque, position and pressure. Resulting graphs show very clearly coating behaviour during every single test cycle and over all the performed cycles. Torque measurement ensures static and dynamic friction coefficient evaluation by a proprietary mathematical method, while the tightness of sealing surfaces is expressed as suggested by International Standards for valve testing. So, conclusions about coating properties become easy to draw and to compare with other already tested coatings.
This test apparatus has been used by DAFRAM to benchmark commonly used hardfacings for valve trim components, also with several combinations of base materials. In addition, for specific Customer requests, unusual combinations of coating and base material have been tested at given process conditions.
Furthermore, the test bench shows its effectiveness in the development of new coating solutions for severe application on ball valves, i.e. high temperatures and abrasive service, or to optimize existing valve design by reducing operation friction between moving parts.

Author:
Marco Sparisci, Lead Product Engineer, DAFRAM SpA
Co-author:
Enrico Palmieri, R&D Engineer, 3P Engineering

fr - We are proud to announce that DAFRAM, recognized as training centre for Bureau Veritas Italy, will hold, from the 7th to the 10th of November 2016, the training course for NDT personnel qualification, Liquid Penetrant Method (PT), according to ISO 9712 level II.

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fr - DAFRAM SpA will be present at ADIPEC 2016, Valve World 2016 and OSEA 2016 Exhibitions.

Please come and visit us at:

ADIPEC
Abu Dhabi
7th-10th November 2016,
Hall 1, Stand 1155

Valve World 2016
Dusseldorf
29th November-1st December 2016,
Hall 5, Stand B27

OSEA 2016
Marina Bay Sands, Singapore
29th November - 02 December 2016,
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DAFRAM SpA is also proud to announce that Steering Committee of Valve World Conference selected Dafram paper to be presented at Valve World Conference. Marco Sparisci, Dafram Lead Product Engineer, will talk about “Innovative experimental evaluation of hardcoatings for ball valves” Thursday 1st December Conference Room 3 at 11:50 am. Please come and take part to the question time.

fr - Iran, July 2016

DAFRAM spa wants to thank all the People who joined to Technical Seminars organized at Tehran and Ahwaz (Iran) on 16th and 18th July 2016.

They have been fantastic days and really the perfect chance to introduce the Multiport Selector Valve (MSV) to the most important Engineering Companies, EPCs and End Users of Oil and Gas EP.

Thanks for your attendance and interest that have been far away our best expectations and thanks also for your questions: those will help us to improve our products in order to fulfill your technical & operational requirements.
DAFRAM spa wants also to thank our local Partner, Aria Tajhiz Apadana, for the very good job done to organize these events.

We hope all the Attendees have appreciated our efforts and willingness to supply products & services that can help to reduce costs and increase safety & reliability of operations both in off-shore and on-shore applications.

Sincerely.