Waterstop Clip

PVC Waterstop and Accessories

Waterstop Clip

دونه ای

The waterstop clip, or waterstop clamp, is made of steel plate and is recognized as the best method for connecting the edges of the waterstop to the rebar network. Installing the waterstop onto the rebar structure requires an auxiliary rod on which the waterstop clip is placed. Then, the PVC waterstop sealing strip is attached to the rebar network by the pressure of the metal clip jaws. It is recommended to place one clip on each side every 50 cm along the length of the waterstop.

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Improper Methods for Installing Waterstop

In some cases, using wire to attach the waterstop to the rebar network is suggested, but this method is not recommended. Piercing the waterstop and passing wire through it causes stretching and tearing of the waterstop during concrete pouring. For installation with wire, the edges must be punched at regular intervals and with a specific diameter, and special steel rings must be placed inside the holes and compressed to achieve sufficient strength.

Best Method for Keeping the Waterstop in Place

The best way to keep the waterstop inside the rebar cage before concrete pouring is to attach it to the rebar structure using a metal waterstop clip. This method minimizes the possibility of detachment or tearing of the PVC waterstop sealing strip during concreting.

Features of the Waterstop Clip

Holding waterstop strips in place.
Securing the edges of the sealing strip.
Preventing damage to the sealing strip.
Properly fastening waterstop strips.
Preventing detachment or sagging of the waterstop.

By using this method, the durability and performance of the waterstop in concrete structures are improved, preventing potential issues in the future

Feature	Description / Typical Value
Material	Galvanized steel, stainless steel, or reinforced polymer
Standard dimensions	15 × 3 × 3 cm (example), matching the width of the waterstop
Approximate weight	100–250 g, depending on type and dimensions
Color	Metallic (silver) or black (in polymer type)
Tensile strength	Minimum 300 N/mm² (for metal), lower for polymer
Corrosion resistance	High (in stainless steel or galvanized type)
Permissible operating temperature	−20 to +80 °C
Chemical resistance	Resistant to alkalis, dilute acids, salts, and high humidity
Type of connection to waterstop	Mechanical (screw clamp) or press‑fit (locking type)
Common application	Connecting ends of waterstops in expansion, construction, or structural joints

How to Use a Waterstop Clip

First, clean and dry both ends of the waterstop and align them. If necessary, for greater flexibility (especially in the PVC type), gently heat the joint area to soften it. Then, place the clip over the joint and secure it by pressing or screwing it, depending on the clip type. After ensuring proper strength and alignment, proceed with concreting. The clip’s function is to maintain the waterstop’s position and reinforce its joint.