Product category:
Process Hardware (Pipes, Nozzles, Heaters, etc)
News Release from: SPX Process Equipment | Subject: Rotalock
Edited by the Engineeringtalk Editorial
Team on 29 June 2006
Quick opening closure is superior
alternative
A quick opening closure offers an inherently safe low-cost answer for small-diameter low-pressure applications.
GD Engineering has developed a quick opening closure, the Rotalock, to provide an inherently safe low-cost solution for small diameter, low pressure applications Designed and priced to offer a superior alternative to screwed closures and blind flanges, Rotalock handles lower pressures to ANSI 300 and diameters from 4 to 14in
This article was originally published on Engineeringtalk on 17 May 2006 at 8.00am (UK)
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Typical applications include: filters, separators, meter provers, pig/scraper traps, blowdowns, strainers, coalescers and waste disposal vessels.
A key feature of our Rotalock design is the pressure warning screw incorporating an integral screw which penetrates through both locking elements in the hub and the cap.
When the PWS is unscrewed it will warn the operator of internal vessel pressure before the cap is rotated.
Complete withdrawal of the PWS and integral locking pin is required before the cap can be rotated and the closure opened.
The PWS is fitted to all sizes but is not designed to function as a blowdown valve.
The PWS with its integral locking pin is unscrewed and completely removed.
This enables the cap to be partially rotated which separates the seal surfaces giving the operator a secondary warning if pressure is still present in the vessel.
A further turn of the cap allows it to be withdrawn from the hub and swung fully clear using the hinge or davit.
The whole operation can be carried out by one person without the need for special tools or wrenches.
Total closing of the cap is also guaranteed since the locking mechanism must be fully engaged before the integral pin is relocated and this enables the PWS to be finally screwed into its seating.
The Rotalock Closure is designed in accordance with ASME VIII Div 1.
An ASME Code Stamp with U-2A partial data report can be furnished as an option.
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