Rapid stainless steel repair clamp range 248 - 257mm suits 250mm Poly, 300mm long with 3 bolts.

Product Description

All 316 stainless steel metal parts with a Nitrile rubber sealing plate vulcanized to the stainless steel allows this exceptionally well made unit to seal around the pipe.   Manufactured in South Africa and with Australian "Watermark Approval" for use with drinking water, these are a terrific and field proven reapair coupling.   The 316 stainless bolts and nuts are tightened using a standard spanner or tension wrench and a perfect watertight seal is made assuring years of trouble free service.   Watermark Approved with a maximum operating pressure of 1,600 kPa for clamps to 350mm diameter.    Click on the "information" button to the right for more details.   Suits 250mm metric poly pipe.

Grade of stainless steel, Type 316. Fully passivated after welding, to restore the original passive state of the 316 stainless steel.

LOCKING WASHER PLATE:   Locks into position for easy tightening of nuts.
LUGS:    MIG-welded to receiver bar and fully passivated after welding. Leading edge is rounded to prevent them from catching bolt bars during installation.
SHELL: 2B finish.
BOLTS: Thread-rolled for strength and coated to prevent galling. Bolts are MIG-welded to the receiver bar and fully passivated after welding.
NUTS/WASHERS: Type 316 stainless steel.
RECEIVER BARS:TIG-welded to shell to form a strong fusion, and fully passivated after welding.
GASKET:Nitrile rubber is specially formulated for water service incorporating antioxidant agents to increase shelf life.  All gaskets have a gridded design, tapered ends and vulcanized armour plates for easy installation and optimum sealing efficiency. Nitrile rubber is supplied by us as standard.
ARMOUR: Heavy gauge 316 stainless steel vulcanized into the gasket at the time of moulding.
TAPPINGS: Type 316 stainless steel, BSP parallel threaded socket.
FLANGES: Type 316 stainless steel, drilled to table ‘D’.
(Specifications are subject to change without notice).                         

General Information
Recommended pressure ratings:
(a) Clamps to suit pipes up to DN350mm nominal size - 1.6 MPa.*
(b) Clamps to suit pipes above DN375mm - 600mm nominal size -1.2 MPa.*

The amount of pressure that a full circle repair clamp will contain is proportional to the diameter of the pipe being repaired and the amount of torque applied to the bolts. Smaller diameter repair clamps will contain more pressure than larger diameter repair clamps. Cleaning and lubricating bolt threads will reduce friction and permit greater torque.

1. The pressure containing capability of a repair clamp is influenced by the pipe size, the type and extent of damage to the pipe, environment and service conditions and installation workmanship.
2. Recommended Clamp lengths:
   The general recommendation is that the clamp length should be twice the pipe diameter. The clamp length should not be less than the diameter of the pipe.
   (a) In the case of longitudinal damage, we recommend a clamp length equal to 4 times the length of the damaged section of the pipe.
   (b) Where a large section of the pipe wall is broken away, a section of thin gauge sheet metal should be placed over the opening to provide a sealing surface for the gasket.
3. Stainless Steel Repair Clamps do not restrain axial pipe movement.
4. Should only be used with metric poly pipe of PN10 or greater.

5. Suitable anchorage must be provided where pipe movement may occur.