Nos. 6380, 9316 and 9380 are furnished in rolls of 50 lineal feet (15.24 meters) each; Nos. 4316 and 6316 are 100 lineal feet (30.48 meters) each.

APPLICATION: The waterstop must be held securely in place by using split forms or any proper method for correct and firm positioning to assure total embedment of the waterstop flanges while concrete is placed. Place the "U" bulb exactly in the center of the joint with the fracture membrane in the direction of the hydrostatic head. Vibrate concrete around the waterstop to avoid honeycombs, voids and mix segregation, thus assuring complete bonding of concrete to waterstop ribs. On the second pour, copper-clad steel anchors may be used to secure the waterstop in proper position. Use 16-gauge tie wire to secure it to the form or reinforcing steel.

DESCRIPTION: BVS DUO-PVC Waterstops are produced as an extrusion from a high-grade polyvinylchloride (PVC) compound.

1. Multi-rib area provides strength with rigidity, locks into concrete with high resistance to shearing.
2. U-Bulb has high tensile strength with flexibility; adjusts to 1%" (38.1mm) joint movement without stretching material or stressing embedded rib area.
3. Fracture membrane easily tears with expansion movement without destroying integrity of the joint.

USES: BVS DUO-PVC Waterstops are embedded in concrete in either vertical or horizontal expansion joints, or control joints wherever differential or joint expansion is anticipated. Any situation where ground or hydrostatic water pressure is present, BVS DUO-PVC Waterstops will effectively prevent passage of liquid through, across or around joints in concrete structures. They keep water in structures such as reservoirs, dams, canals, swimming pools, tanks containers and aqueducts...keeps water out of basements, water and sewage plants, foundation walls, warehouses and the like. They also prevent joint leakage in bridges, stadiums, floor slabs, parking garages, wing walls and culverts.

• PVC extrusion provides flexibility where needed and rigidity where required
• Accommodates up to 1½" (38.1mm) of mechanical movement without stressing the ribbed areas
• DUO-PVC design accommodates expansion movements safely, without stressing ribbed flange areas

PRECAUTIONS: Do not use direct flame or overheat waterstop during field splicing. Specifier and user shall determine suitability of product for specific applications and assume all responsibilities in connection therewith. Read and follow application information, precautions and Material Safety Data information.

Incorporating all the advantages of DUO-PVC Waterstops, this product adds the unique NAIL-ON principle...an important time and labor-saving feature because it eliminates the need for special split forms to hold the waterstop in position during concrete placement. The unit is easily attached to the concrete forms with a doubleheaded nail. Butt splicing DUO-PVC and NAIL-ON Waterstops is quickly accomplished on-the-job with a thermostatically controlled electric splicer. When electricity is not available, heat a steel plate on a plumber’s torch and use it to melt the ends of the waterstop. When the solder melts and the ends become soft and molten, align and hold them firmly together until the bond is secure. Do not char the heated ends.