Product category:
Tanks, pipework, nozzles, tube fittings
News Release from: SPX Process Equipment | Subject: Rotalock
Edited by the Processingtalk Editorial
Team on 27 June 2006
Quick opening closure for small diameter
pipes
GD Engineering has developed a quick opening closure, the Rotalock, to provide an inherently safe, low cost solution 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 4inch to 14inches
This article was originally published on Processingtalk on 9 Aug 2004 at 8.00am (UK)
Related stories
New Lightnin portable/fixed mount mixer
SPX Process Equipment is once again moving this technology forward with its introduction of the Lightnin ECL mixer range, giving users improved performance and enhanced process results
New for old policy on Bran + Luebbe and MPL pumps
Some day all pumps will need replacing, even those that have been regularly serviced and maintained: an SPX scheme allows users to trade in their old pumps for a discount against the latest technology
It provides quick and frequent access to a range of vessels in petrochemical, pharmaceutical and chemical process technologies, at temperatures from -30C to +200C.
Typical applications include: filters; separators; meter provers; pig/scraper traps; blowdowns; strainers; coalescers; waste disposal vessels.
A key feature of the Rotalock design is the Pressure Warning Screw (PWS) 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A further turn of the cap allows it to be withdrawn from the hub and swung fully clear using the hinge or davit.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.
ASME Code Stamp with U-2A partial data report can be furnished as an option.
• SPX Process Equipment: contact details and other news
• Email this article to a colleague
• Register for the free Processingtalk email newsletter
• Processingtalk Home Page
Search the Pro-Talk network of sites
