Blind air pressure plugs are designated for pipeline shank bore of different diameters while assuming of emergency measures, repair and adjustment operations performed with oil pipelines, oil-product pipelines, water pipe, sewerage and heating systems (including chemical enterprises).
Blind air pressure plugs represent hollow barrel cover with two flat bottoms. A faucet for filling the cover with compressed air is located on one bottom, a hanger for fixation of the air pressure plug in a piping for removing of compressed air from the cover and draining water that has been collected during the repair process is located on the other one.
Blind air pressure plugs are applied when the frontal part of the piping is open or when there is an opportunity to cut large operating opening in the pipe that is equal to overall dimensions of blind air pressure plug. The serviced hatches of sewerage systems have open frontal pipeline parts. Air pressure plug setting is performed by means of them. The open frontal pipeline parts can be formed by means of cutting of the defective area of the piping and its replacement by a conditioned pipe. The process is applied in oil pipelines and oil-product pipelines.
Versions, complete set, and range of use are listed below.
| Version |
Complete set |
Range of use |
| PPD-КВ |
Rubber plug for general application with a support in set with a ground level valve |
Sewerage systems |
| PPD-КШ |
Rubber plug for general application with a support in set with a remote ball plug valve |
Sewerage systems |
| PPD-КМВ |
Plug made of oil and petrol resistant rubber in set with a support with ground level valve |
Sewerage systems of chemical enterprises |
| PPD-КМШ |
Plug made of oil and petrol resistant rubber in set with a support with a remote ball plug valve |
Sewerage nets of chemical enterprises |
| PPD-МВ |
Plug made of oil and petrol resistant rubber in set without a support with ground level valve |
Water pipes, transport of oil-product |
| PPD-МР |
Plug made of oil and petrol resistant rubber in set without a support with a sealer flexible pipe |
Water pipes, transport of oil-product |
Air pressure plugs complete set with west made valves is acceptable.
Products have a certificate of the approved form. Instructions, log books, detailed description of assembling and dismantling procedures and safety requirements, storage and transportation guidelines, manufacturer's guarantees are provided alongside with the products.
Caution! For oil pipelines and oil-product pipelines air pressure plugs of only “M” version are applied. Appliance of air pressure plugs of “KM” version for oil pipelines and oil products pipelines is PROHIBITED!
BASIC PARAMETERS
| Product designation |
External diameter in the initial condition, mm |
Cover length in the initial condition, mm |
Mass, kg, not exceeding |
| PPD-1 |
94 |
400 |
1,3 |
| PPD-2 |
190 |
475 |
3,8 |
| PPD-3 |
350 |
600 |
10,0 |
| PPD-4 |
580 |
760 |
21,0 |
| PPD-5 |
784 |
1274 |
71,0 |
| PPD-6 |
1100 |
1100 |
90,0 |
| PPD-7 |
1100 |
1750 |
130,0 |
TECHNICAL CHARACTERISTICS
| Product designation |
Internal diameters of pipes blocked by a plug, mm |
Pressure of liquid (gas) in a pipeline, bar, not exceeding |
Air pressure in a plug, bar |
Gas evacuation in front of the plug in a pipeline, bar, not exceeding |
Support presence for plugs fixing |
| PPD-1 |
100-190 |
2* |
4 |
-0,5 |
no |
| PPD-2 |
200-350 |
2* |
4 |
-0,5 |
yes |
| PPD-3 |
360-590 |
1,5* |
3 |
-0,5 |
yes |
| PPD-4 |
600-800 |
1,5* |
3 |
-0,5 |
yes |
| PPD-5 |
800-1000 |
1,5* |
3 |
-0,5 |
yes |
| PPD-6 |
1200 |
2 |
4 |
-0,5 |
yes |
| PPD-7 |
1200-1600 |
1 |
2,5 |
-0,5 |
yes |
| * - for oil piping and oil product piping – pressure must not exceed 1 bar |
