Certa-Lok PVC Screens are easy to handle, assemble, and install. The deep V-shaped ribs of this continuous slot well screen maximizes intake capacity while minimizing plugging. Certa-Lok PVC screens are provided in short lengths and are packaged in convenient cartons which allow easy handling and help assure undamaged delivery to the construction site. Available in 4" screen, which can be shipped via UPS. Because Certa-Lok is supplied in short lengths, there is no need to cut or fabricate the screen to meet the job requirements. The Certa-Loc snap together design makes assembly both secure and easy. No PVC solvent or cement is required.

Dimensions of 4" Certa-Lok Screens   Denver Stock Item

Maximum O.D. is 4.5"     Minimum I.D. is 3.88"     Overall Length is 20"
Setting Length is 19"     Weight of length is 2.5 lbs     
Depth of V-shaped Rib is .250"
12 slot ( .012" ) has 6.1% open area with 10.2 square inches of open area per setting foot of screen.
23 slot ( .023" ) has 11.7% open area with 19.8 square inches of open area per setting foot of screen.
36 slot ( .036" ) has 18.3% open area with 31.0 square inches of open area per setting foot of screen.

JOHNSON'S PVC VEE-WIRE ENVIRONMENTAL WELL SCREENS WITH F-480 THREADED FLUSH JOINT THREADS. Johnson's exclusive Vee-Wire design continuous slot well screen gives you maximum open area and minimum plugging. Sonically welded PVC vertical support rods and V-shaped PVC wire wrap are thermally attached to the F-480 end fittings. Johnson's exclusive manufacturing process ( without the use of solvents ) makes these screens perfect for your environmentally sensitive monitoring applications. Each screen is individually cleaned and hermetically sealed in protective plastic bags to eliminate contamination. ASTM F-480 Flush Joint Threads with Buna-N o-rings provide leak proof joints. These screens will thread into out Titan brand threaded flush joint solid PVC monitoring casing as well as threading into stainless steel flush joint riser.