The Inflatable Low Profile Stoppers are widely used for blocking pipe ends to keep gases inside or to keep debris and vermin out. These disc plugs provide an excellent grip in the pipe with an effective all round seal. Low Profile stoppers can fit into a pipe end that may be directly on an elbow or maybe just inside a flanged neck on a casting or other fabrication.
Each Low Profile Stopper is fitted as standard with a Schrader Valve connected to a 1.2m hose and is easy to inflate by simply connecting to a hand or foot pump or compressor. Deflation of each stopper is carried out by simply depressing the pin inside the Schrader Valve.
These stoppers are manufactured for pipe diameters from 6″ and up. They are also referred to as pancake stoppers or donut stoppers due to their shape.
Four pull tags are located around the circumference of the Low Profile Stopper. This means rope, pull wires or slings can be attached for retrieval of the deflated system if required.
Frequently Asked Questions
1.0 How do I know when to choose between a Mechanical and an Inflatable Stopper?
HFT Pipestoppers® Inflatable Stoppers can be inserted and retracted through holes smaller than the one to be sealed. They are much less expensive than Mechanical Stoppers, but are not so suitable for applications requiring the ruggedness and strength of a Mechanical Stopper.
2.0 How do I prevent the stoppers from being pushed out of the pipe during a pressure test?
It is common to brace the ends of pipes to prevent stoppers sliding out.
3.0 What is the maximum temperature range for the Low Profile Stoppers?
The recommended maximum temperature for this standard range is 80ºC (176ºF).
4.0 What is the size range for Low Profile Stoppers?
The size range is 6″ and up
5.0 How do I inflate the Stoppers?
Each Stopper is designed and fitted with a standard Schrader value, which will attach to any foot pump or compressor.
Square & Rectangular Inflatable Stoppers
Square and Rectangular Inflatable Stoppers are manufactured from the same robust material as the Low Profile Stoppers and QuickPurge® Inflatable Tube, Pipe and Pipeline Systems, all of which are heat resistant up to 80ºC (176ºF).
These Square and Rectangular Inflatable Stoppers are ideal for special applications such as blocking a chute so materials don’t accidentally fall in and protecting a pipe from debris during downtime.
Each Stopper is fitted as standard with a Schrader Valve for inflation and deflation, which is connected to a 1.2m hose. Inflation can be carried out easily by connecting a hand or foot pump or compressor and deflation by depressing the pin inside the Valve.
The Standard Square Inflatable Stoppers are available in sizes from 5” x 5” to 80” x 80” and the Rectangular Inflatable Stoppers can be made to order.
Whatever your requirement or application, our full range of Inflatable Stoppers will ensure your pipes are blocked and free from debris.