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SAFETY MAIN STOPPER CO., INC.

TYPE "D" DIRECTIONAL GAS BAG

The construction of the Type "D" Directional Gas Bags is similar to traditional gas bags in that they have an internal rubber bladder and a sewn fabric outer cover that protects the bladder and allows the bag to be pressurized. In addition, however, the Type "D" Directional Bag contains an internal, curved flexible nylon tube that enables the user to to direct the gas bag either upstream or downstream. This directional capability makes for easier and safer insertion into the main.

The Type "D" Directional Gas Bag is available with an optional inserting device. A rigid brass tube with a 90 bend near its attachment to the bag is fitted with a tire valve, pressure gauge, air release valve and tapered neoprene plug; allowing easy inflation/deflation and monitoring. The tapered neoprene plug is free to slide on the brass tube or "stem," and allows the tap hole to be sealed as soon as the bag is inserted. No gas escapes to the atmosphere once the plug is in place.

The Safety Main Stopper Co., Inc., founded in 1897, manufactures and furnishes to the gas industry products of exceptional quality and merit. The highest recommendation of these products is their continued and successful use for more than a century by gas companies throughout the world.

WARNING
READ INSTRUCTION MANUAL AND TEST BAG BEFORE EACH USE.

GAS MAIN LINE PRESSURE MUST NOT EXEED 12 IN. W.C.
DO NOT INFLATE BAGS OVER THE FOLLOWING PRESSURES:

NOMINAL MAIN
DIAMETER
SIZE OF
TAP HOLE
MAXIMUM INFLATION
PRESSURE (psig)
3"
4"
6"
8"
10"
12"
16"
20"
24"
1"
1"
1-1/4"
2"
2"
2-1/2"
3"
4"
4"
10
9
7
6
4
4
3
2
2

ALWAYS use two stoppers in series with a vent pipe between them.

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Contact Information
Please call with your requirements, or fax us a blueprint or sketch for a prompt quotation on price and delivery.

Safety Main Stopper Co., Inc.
P.O. Box 170287
Times Plaza Station
Brooklyn, NY 11217

Telephone: 718-875-4427
Fax: 718-625-4805

Email: rubcons@ix.netcom.com