POLYETHYLENE SERVICE LINE SQUEEZE OFF TOOL
Pressure control of Polyethylene Plastic Pipe using the squeeze-off principle has been practiced for many years. A very important part of the squeeze-off concept is to protect the pipe using gap stops to prevent over squeezing. Gap stop sizes are determined by doubling the pipe wall thickness and subtracting a compressive value up to 30% of the doubled wall. The Otech Polyethylene Service Line Squeeze Tool kit is designed with gap stops for:
- ½" CTS .062 Wall High Density PE Pipe
- ½" CTS .090 Wall Medium Density PE Pipe
- 1" CTS .090 & .099 Medium Density Pipe
This tool has been tested by GTI and meets the requirements of ASTM D2513 for sustained pressure on a pipe after the squeeze tool has been applied.
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Benefits
- Common Top Jaw attachment on the SF-1125K Squeeze Off Tool Kit
- Fixed gap squeeze setting ensures the gas line is completely closed off and the pipe is not permanently damaged
- Flat surface with radius edges provide superior flow control characteristics
- High tech plastic construction insulates the squeeze off tool from static electricity
- Removeable squeeze tool attachements allows the versatility of using the Vise-Grip® 12LC curved jaw pliers
- "T" handle provides additional leverage to restrict flow and release rate
- An optional grounding rod is available
- Durable locking carrying case included
GROUNDING ROD ATTACHMENT
Polyethylene plastic used in manufacturing gas pipe has many advantages over steel and other materials. However, one disadvantage is the potentially dangerous buildup caused by gas flowing through this non-conductive material. The possibility of static electric discharge during squeeze-off of PE gas pipe is now recognized and addressed by gas utilities and pipe manufacturers. During the normal flow of natural gas in PE pipe, electric charges move in the direction of the gas. When squeeze-off occurs, turbulence and gas velocity increase at the squeeze point, which causes the charges to become heavily concentrated at that same point. As the charge increases in density on the inside wall surface, the force between the charges inside the pipe and the opposing charges outside the pipe increase. When the force exceeds the dielectric strength of the pipe, the charges move through the pipe and creates a pin hole opening in the pipe wall. If the squeeze tool is properly grounded, the discharge will move through the![](img/products/grounding.jpg)
This phenomenon is aggravated by:
- Sufficient gas flow to cause extensive turbulence, such as the reduced area of pipe during squeeze-off.
- Rust or foreign particles present in the gas.
Our products are proudly "Made in Michigan".
GUARANTEE
The GUARANTEE covers material, workmanship and design of products manufactured by Otech llc., and does not guarantee the products of other manufacturers. Otech llc. guarantees the product for three years with use in proper conditions, proper use of product(s) and proper training in use of the product(s). If a product is defective, the product must be returrned, freight prepaid, to the factory with complete information regarding the failureof that product. Claims will be disallowed if abuse, modification of the product or lack of proof of purchase is evident. Otech llc., reserves the right to repair or replace subject product(s) and will return to purchaser. Otech llc., reserves the right to change or improve its product without notification or without incurring any liability or obligation to previous products. Otech llc., is not responsible for training in the use of the product(s), injury or damage as a result of misuse, tampering or the lack of training in regards to the use of the product(s) manufactured by Otech llc.Claims or Inquiries should be directed to: Otech llc., PO Box 906, Bloomfield Hills, MI 48303-0906
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