Series 150 Releasing and Circulating Overshot is the strongest tool available to externally engage, pack-off, and pull a fish. The basic simplicity and rugged construction with which it is designed have made it the standard of all external catch fishing tools.
The Bowen Series 150 Releasing and Circulating Overshot is composed of three outside parts: Top Sub, Bowl, and Guide. The Basic Overshot may be dressed with either of two sets of internal parts, depending on whether the fish to be caught is near maximum size for the particular overshot.
The Bowl of the Overshot is designed with helically tapered spiral section on its inside diameter. The gripping member (Spiral Grapple or Basket Grapple), is fitted into this section. When an upward pull is exerted against a fish, an expansion strain is spread evenly over a long section of the bowl and the compression strain is spread evenly over a long section of the fish. No damage or distortion occurs to either the fish or the Overshot. This design permits a far stronger tool with a smaller outside diameter than is possible with an overshot that employs a single tapered section which supports slips. Overshot Accessories:
- Overshot extension, 24"-60" long;
- Oversized and wall hook guides;
- Stop rings;
When the overshot is dressed with a Spiral Grapple, a Type "A" Packer is used. It seals at its O.D. against the inside of the Bowl. It has an internal lip that seals around the fish of a specific size.