uPVC valves
6Pages

uPVC Valves DESIGN SPECIFICATIONS

CONCRETE SUPPORT IN LINE VALVE SUPPORT If the trench wall is not made of original soil, the T-Junction must be supported by concrete. The cement support (represented in the diagrams below) is recommended in case the bottom soil in the trench is soft or unstable. The concrete surface required to support a T-Junction with a 3" valve is 1,000 cm2. The concrete surface required to support a T-Junction with a 4" valve is 1,500 cm2. Concrete Support

CEMENTING INSTRUCTIONS INSTALLING VALVE SUPPORT 1. Before cementing the pipe into the valve, insert the pipe into the valve and mark the point of complete penetration. Valve support for above ground installation. 2. Clean the inside of the valve and the outside of the pipe with Methyl Chloride, or at least, sand them down. The valve body is sensitive to mechanical forces, so above ground installation must be supported properly. Such support prevents collapse that may result from unstable soil. The supports must stand on solid soil. Place them on both sides of the valve, as close as possible...

UNDERGROUND VALVE INSTALLATION INSTRUCTIONS • For 3" valves, the user should dig a trench • • • • • 500-550 mm wide. For 4" valves, the user should dig a trench 600-650 mm wide. The depth of the trenches should be at least 800 mm deep to avoid damage from agricultural machinery. The bottom of the trench should consist of original soil and be free of stones and other elements larger than 20 mm diameter. To cover the valve, the user should use soft soil free of stones. First, a layer of 100-200 mm of clean soil should be applied. After this first layer, trench soil is sufficient for further...

TIGHTENING BONNET BOLTS (ONLY AFTER CHANGING DIAPHRAGM) Tighten the bolts in a cross section manner using equal amounts of pressure for each bolt. Carefully tighten the bolts until the diaphragm is pressed between the valve body and bonnet. If there is leakage between the valve body and bonnet during the pressure check, it is an indication that the bolts should be tightened. UNDERGROUND VALVE PRESSURE TEST Before totally covering the trench, perform a pressure and leakage test. The test must be according to the pipe manufacturer instructions, but the pressure should not exceed 8 bar. The...

GENERAL USES ≈ Irrigation Systems (Field Valves) (Underground Installation) ≈ Anti-Frost Irrigation Systems With Underground Valves. ≈ Corrosive Water Systems For Industry And Agriculture. ≈ Sewage Systems ≈ Water Supply Systems ≈ Municipal Water Systems ≈ Landscaping ≈ Green Houses ≈ Filtration MATERIALS Body Bonnet Spring Nuts and bolts Inserted nuts Diaphragm u PVC 30 % Glass-Reinforced Polyamide SST 302 Coated Steel Brass Natural Rubber CLASSIFICATION Model Connection ≈ The valves are designed to withstand various pressures whether they are installed above ground or underground. * see...