CONCENTRIC INLET VERSION

• Two Swirl-Air nozzle versions are available: the right angle nozzle (atomising air enters the side, the liquid enters axially in back): and the inline nozzle (concentric piping is used with the liquid in the centre atomising air around the outside). Concentric pipe adaptors are optional and not included with the nozzle assembly.

Features

• Large internal passages with no vanes or cores assure unrestricted flow with little chance for clogging.
• No external struts or supports to interfere with spray pattern
• Nozzle design provides for vortex mixing, primary impingement, fluid distortion and external impact for fine atomisation and relatively high nozzle efficiency
• Spray angle can be adjusted through interchangeable nozzle cap assemblies. This feature permits much wider spray patterns than are possible with most types of two fluid atomisers.
• Air flow (M3/min) and power requirements are relatively low, permitting specification of smaller air compressors
• Good atomisation over wide turn-down ratios
• Droplet size is controlled by minor changes in air pressure

Spray Characteristics

• Air is introduced tangentially into the nozzle chamber in low pressure region of the swirling liquid, creating extreme turbulence and primary atomisation. As liquid leaves the orifice, it impinges against the deflector ring which serves a dual purpose: close control of spray angle and breakup of the spray into even finer droplets (secondary atomisation)
• Nominal spray angles of 50’ba, 75’ba, 10’ba can be attained by specification of interchangeable nozzle caps. Contact Delavan’ 92s Customer Service Team for special spray angles up to 180’ba
• Mean droplet diameters in the 50 to 100 micrometers range at modest air pressures and flow rates
• Degree of atomisation is also variable by controlling the ratio of air to liquid
• If air pressure is set initially, and it is necessary to modulate the liquid flow, the air pressure and flow rates will automatically respond in such a way that he quality of atomisation remains nearly constant. In some applications, this can result in savings through the elimination of air valving and controls.

Construction and Materials

• Two piece construction, the nozzle body plus integral deflector ring and cap, easily removable without disturbing pipe connection
• For in-line nozzles the user can alter ’93C ’94 dimension to any extended length by providing two concentric pipes with a coupling on one end of each. Both made up pipe/coupling lengths should be equal. The length is then the desired addition to 93C’94 dimension
• No external struts or supports to interfere with spray pattern
• Both in-line and right angle versions are available in 316L Stainless Steel and 440 Stainless Steel. Other materials such as Hastelloy C276, Inconel 600, Carpenter 20, Titanium and Carbide are available by special order. For other materials, contact Delavan’92s Customer Service Team
• Large internal passages with no vanes or cores assure unrestricted flow with little chance for clogging

Nozzle –

Max. Design Pressure: 14 Bar. G.

Max Design Temperature: 540 ‘ baC.

Adaptor –

Max. Design Pressure: 14 Bar. G.

Max. Design Temperature: 150 ‘ baC.