The spiral window of the Klearvision highly visible valve position indicator is available as standard with red showing the "closed" position and "yellow" showing the open position. Some clients have asked for green to show the "open" position. A red "closed" and green "open" Klearvision is now optionally available at no extra cost. Other options include flow path indication for three way valves and a graduated percentage scale for modulating applications.
K Controls Ltd, has employed two engineering apprentices (please click on image); Jimi Welsh (left of picture) and George Bates (right of picture).The company is offering them the opportunity to develop specialist engineering skills, whilst being supported to complete their qualifications.
Both apprentices are half way through a four year programme. They have both recently passed the BTEC Level 3 Diploma in Mechanical Engineering. This involved studying two days a week at Uxbridge College and working three days a week at K Controls.
They now have two years of NVQ work based training ahead of them which should lead to the award of the City and Guilds NVQ Level 3 in Mechanical Engineering. They will then be awarded a Framework Certificate for the Level 3 Advanced Apprenticeship in Mechanical Engineering.
George took a closer look at engineering as a career because other members of his family are engineers. Jimi commented that he always liked maths and physics at school so engineering was a natural choice for him. Both George and Jimi are particularly interested in learning more about product design.
Brian Prince, Joint Managing Director at K Controls said: “I took the same route into engineering many years ago. I benefited greatly from the support of others at an early stage of my career so it is good to see two young people set off down a similar path. The valve industry needs to bring young people into the profession, so that we can secure highly skilled people for the future. Our current Engineering Manager completed a similar apprenticeship with us 20 years ago."
K Controls submersible valve position monitors can be fitted to a wide range of 1/4 turn or linear, sub-sea valve actuators. (Please click on image to left that shows unit fitted to a 1/4 turn hydraulic actuator.)
4-20mA + HART® 5 or 7, PROFIBUS® PA or FOUNDATION™ FIELDBUS signals can be provided to continuously monitor valve position.
End of travel proximity sensor inputs are also an option.
When not submerged, the position monitors could be in an area where hazardous gasses are present.
If this is the case they are supplied Exi or Exd, ATEX and IECEx certified. INMETRO is an option for Brazil. (Please click on image to left that shows Exi unit with mounting kit.)
Ex versions have been independently tested by SGS Baseefa, IP68 to EN 60529:1991, at a depth of 30 metres for 96 hours.
Most other units are designed for depths to 150 metres and special pressure balanced units are available for depths to 2500 metres. (Please click on image below left to view a unit in duplex stainless steel suitable for a depth of 400 metres.)
Ingress and operational testing is performed prior to despatch. Third party witness inspection is also available.
Enclosures are available in a range of materials including carbon steel, 316L stainless steel, 254SMO stainless steel (20%Cr -18%Ni-6%Mo), Duplex 2205 and Super Duplex.
Optional surface coatings of the carbon steel and 316L stainless units include NORSOK M501 Rev 6 System 7B (Sub-sea) paint. (Please click on image below left to view version with NORSOK finish.)
A standard M20 or ½” NPT conduit entry is provided. Alternatively the base can be machined to accept a customer specified sub-sea connector or cable penetrator.
Units with multi pin connectors can be supplied with the associated cable sets that meet the exacting standards required for both subsea and shipboard use.
Each cable set can be cut to a predefined length in order to facilitate installation.
Mounting kits for the actuators are usually manufactured from super duplex stainless steel.
Applications include rig positioning, sub-sea emergency shut down or manifold valves, dry docks and FPSO ballast tanks.
The document describes ten different ways of positioning a pneumatically actuated valve. Topics covered include positioning on/off valves, three position control, direct positioning of diaphragm actuators, I to P converters and the functions of five different types of positioner.