Johnson filter screen also called wire wrapped water well screen and continuous slot screen. It consists of V-wire and the longitudinal support rods. Each intersecting point of these wires is fusion welded, so it has sturdy constriction and good mechanical property.

Application for Johnson filter wedge wire screen used for water well drilling:

1.) Widely used in various kinds of medium filtering
2.) As the fitting using in the water-treating equipment;the environment protection; the sea water transforms into the industrial water and life use water desalination treatment; running water treatment; softening treatment;
3.) The petroleum industry: the petroleum product terminal filters and the chemical acid; the alkali liquid filters, the ethyl alcohol;
4.) The organic solution recycling filter

Advantage for Johnson filter wedge wire screen used for water well drilling:

The V-shape section plane can avoid blockage, and make sure of the unimpeded water. The consecutive slot have more open area, and it can reduce the speed of the water entering to avoid the sand entering the screen under the great pressure, so wire wrapped screen can filter sand better.

Characteristic for Johnson filter wedge wire screen used for water well drilling:

1. Production process continuity: V-shaped profile wires creating slots which enlarge inwardly
and therefore avoid clogging and minimize downtime.
2. Low maintenance costs: Separation at the screen surface which can easily cleaned by scraping or back
washing.
3. Maximum process output: Precise and continuous slot openings resulting in accurate separation without
loss off media.
4. Low operational costs: Large open area with an effective flow, high yield and a low pressure drop (dP)
5. Long live: Welded at each intersection creating a strong and durable screen.
6. Reduced installation costs: supporting constructions eliminating costly support media and enabling a maximum flexibility in the design of components.
7. Chemical and thermal resistant: A variety of corrosion resistant stainless steel materials and many exotic alloys suitable for high temperatures and pressures. Each slot opening between adjacent wires is V-shaped, resulting from the special shape of the wire used to form the screen surface. The V-shaped openings, designed to be nonclogging, are narrowest at the outer face and widen inwardly.
Continuous-slot screens provide more intake area per unit area of screen surface than any other type. For any given slot size, this type of screen has maximum open area.