Apollo Screens Private Limited products

The application for Gravel Pack water well screens is in unconsolidated formation, where conventional gravel pack is economically unviable and normal well development is doubtful.Apollo Pre-pack consists of an inner and outer wire wrap screen packed with smooth accurately sized natural gravel. The pre pack material is installed in the annual space between the inner and outer screen.This design allows closer contact between screen and aquifer improving well development, efficiency and installation time - reducing overall costs.Gravel-Pack screens have relatively high porosity, which combined with their very high permeability minimize pressure drop. To ensure selection of a correctly sized gravel pack requires sieve analysis of a sand sample from the surrounding formation.The installation of the gravel pack between the inner and out screen takes place in the factory, prior to shipping of screens to drill site.

The Apollo FINE Bar Screen is made using proven technology using upward and downward moving specially shaped fine bars. The machine is made from a set of two fine bars, a mobile bar and a fixed bar. The fixed and mobile bars are equally spaced 3 mm to 6 mm apart.

The all welded wedge wire screens are made from two elements the V-shaped wedge wire is helically wound around an array of internal longitudinal support rods. Each intersection of wire and rods is automatically resistance welded, creating a very strong cage-like cylinder with one continuous slot spiralling along its full length. The gap between the wires, also called slot or aperture, is manufactured to customer specification, allows water to flow from the surrounding aquifer into the screen, The slots can be very narrow to keep out fine sand grains, which could otherwise damage your pump through abrasion.

Limiting the maximum screen through velocity to 0.15 m/s, minimizes the build-up of solids and aquatic organisms on the screen. The low screen entrance velocity and minimum clogging conditions result in very low head loss across the screen surface. In cases of extremely high loads of debris in the water body or inadequate current conditions an air backwash system for auxiliary cleaning may be incorporated into the screen assembly. During the air backwashing cycle debris is flushed away from the wedge wire screen surface, by a burst of compressed air released inside the screen cylinder. The air backwash system can be manually or automatically operated, based on a timer or pressure drop set-up to suit the system supplied. The Apollo Screens wedge wire water intake screens are supplied in Single or Tee configurations specifically designed to suit individual applications in rivers, lakes, dams or ocean.

The Apollo Multi Rake Screen is a chain operated bar screen for removal of solids from channel flow. The Apollo Multi Rake Bar Screen is installed vertically and remains partially submerged within the channel. Debris is collected by a chain operated cleaning rake, intermeshing with the rake bars. The collected debris is discharges at top, during upward motion of the rake and the rake is cleaned by scraper during the descending motion of each cycle. Drive unit is fitted at the top and controlled through a control panel.