Container pumps

Citation

(2002), "Container pumps", Pigment & Resin Technology, Vol. 31 No. 6. https://doi.org/10.1108/prt.2002.12931fad.009

Container pumps

Container pumps

Keywords: Pumps, Containers, Lubricants, Chemicals

Air operated double diaphragm (AODD) pump specialist, Tri-Ark Ltd has added a range of container pumps to its product range. These can be used for the transfer of lubricants, industrial liquids and chemicals. AODD pumps are thought to be particularly suitable for container transfer applications because of their self priming and dry running characteristics. The pump acts as a “scavenger”, to completely empty drums, barrels, sumps etc. This can offer significant cost savings to the user since no residual product is said to be left in the container. The pumps can also pass small particles without damage.

AODD pumps are stated to be inherently self-priming, i.e. capable of drawing up liquid even when installed above the source liquid level. This means that the pump can be mounted directly on the top of the container.

The pumps are available with a variety of container fittings and can be supplied complete with siphon tube and agitator for mixing, and a fluid dispensing hose, with or without non-drip nozzle. The AODD pump itself and the hoses are available in a variety of materials such as stainless steel/acetal and stainless steel/polypropylene to allow even aggressive chemicals to be transferred.

Because the pumps are powered by compressed air, there is no electricity used, enabling them to be used in hazardous areas. AODD pumps can reportedly be run dry without damage; they simply run faster. Air shut-off valves can be added to reduce the amount of wasted compressed air during dry running. Discharge flow rates are adjusted by controlling the air inlet, so no complex control systems are required.

Tri-Ark also announce the new B50 and B75 Series of aluminium AODD pumps from Blagdon. Aluminium pumps have a strong, but lightweight construction and can be used with many solvent based coatings. The bolted configuration gives greater integrity. Powered by compressed air, AODD pumps are used extensively in applications where electricity is either not available or must not be used for safety reasons.

Santoprene diaphragms and ball valves have been introduced as options for these models. Santoprene claims to provide excellent abrasion resistance and a long mechanical flex life for diaphragms and operates in the temperature range . Other materials available for diaphragms and ball valves include: buna, neoprene and PTFE.

Both pumps are ported at the end for improved flow rates. The B50 is a 2″ pump with flow rates up to 34 m³/h and the B75 is a 3″ pump with flow rates up to 53 m³/h. Both pumps operate at pressures up to 8.6 bar. AODD pumps are thought particularly suitable for pumping abrasive fluids and both pumps can accommodate solid particles up to 10 mm in size.

The B50 and B75 also feature a high performance air valve which reportedly will not stall in mid position. Designed for easy servicing, it may be easily removed or alternatively servicing may be carried out in line, for minimum pump downtime.

Further details are available from Tri-Ark Ltd. Tel: +44 (0)1621 781144; Fax: +44 (0)1621 781155; E-mail: sales@Tri-Ark.com; Web site: http://www.Tri-Ark.com