KNAPP Pipecleaners

Manufactures a Comprehensive Line of Pipeline spheres that includes inflatable, solid cast urethane, solid cast with foam core, and a urethane foam series

Cast Urethane Pigs

K-Disc® Pig

Knapp’s Patented Single-Piece, Bi-Directional Scraping Pipeline Pig.  The K-Disc Is Unmatched For Paraffin Scraping Ability.

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Accept No Subtitutes

To insure unparalleled quality, the patented and proven K-Disc is manufactured exclusively by Knapp Polly Pig in Houston, Texas, USA and Monterrey, Mexico.

All-Urethane, Single-Piece Construction

The Knapp K-Disc Pig has no metal parts which could damage the pipewall or costly pipeline ancillary equipment like pumps and compressors. The solid, one-piece polyurethane elastomer construction prevents the pig from coming apart
in the line.

Performance Oriented Discs

Tough line-sized scraping discs located at each end of the pig remove stubborn deposits while the over-sized central discs provide the flexible seal necessary to propel the K-Disc through the pipeline.

Bi-Directional

The K-Disc’s patented design allows the pig to seal and scrape equally regardless of the direction it is moving in the pipeline.

Designed for On-Stream Maintenance

The K-Disc pig was designed to be used as an on-stream maintenance tool capable of being propelled by the produced media whether it is a gas or a liquid.

AVAILABLE IN ULTRATHANE®

The K-Disc pig is available in many different formulations of Ultrathane, Knapp’s exclusive Ultra Performance Urethane, which are fine-tuned for the job requirements. Ultrathane’s superior elastomeric physicals characteristics in tear and tensile strength provide the ultimate in long wear and scraping ability. Contact the factory for specific Ultrathane formulation recommendations suited for your line.

Ultra-Cast®Pig

Solid Cast Urethane Combination Cup And Disc Scraping Pipeline Pig.

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Ultra_Cast® Pig

The ideal combination of scraping and sealing capabilities in one tough, long-lasting pipeline cleaner.

One-Piece Design

The Knapp Ultra-Cast Pig is a one-piece design with a sealing cup at the front and rear of the pig and two scraping discs between them.

Seals Like a Cup

A cup shape is the most effective design to allow a pig to run long distances yet maintain a good drive seal.

Scrapes Like a Disc Pig

A disc shape is the most effective design to scrape foreign materials off pipe walls. Ultra-Cast discs are thicker at their base to keep the edge of the discs from bending too much.

Ultra-Cast® Options

The Knapp Ultra-Cast pipeline pig is available with circular, wrap-around steel brushes and various tracking options.

Available in Ultrathane®

Knapp’s Ultrathane is a premium grade polyurethane elastomer custom formulated for specific job requirements.

Nova-Cast®Pig

Knapp’s Patented One-Piece, Solid Cast Urethane Pipeline Pig Designed For Pipeline-Specific Applications.

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Designed for Purposed

The Knapp Nova-Cast Pig is a custom-designed, all-urethane, one-piece, composite pipeline pig made to accommodate special pipeline configurations.

Multi-Diameter

The Nova-Cast is available in configurations that allow the pig to pass through multiple-diameter piping while retaining the ability to scrape paraffin or remove liquids.11

Combination of Cups and Disc

The Nova-Cast can be constructed with virtually limitless combinations of discs and cups of varying urethane hardnesses.

Configured to Customer Needs

The Nova-Cast Pig can be configured with any number of cups and/or discs to suit the operator’s needs.

Spherical Pig Launch Valves

The Nova-Cast is available in special short versions to fit spherical pigging valves.

Subsea Piggable Wyes

Knapp’s Nova-Cast Pig is available in extended length models made to pass through subsea piggable wyes or offset fittings.

Ultra-Flex® Pig

Solid Cast Urethane Cup And Disc Fluid Control Pipeline Pig.

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Flexible

The Ultra-Flex pipeline pig was designed with flexible urethane cups and discs so that can pass easily through pipeline joints, valves and bends.

One-Piece Design

Economical one-piece construction means no costly
spare parts to inventory or lose in the line

Light Weight

Lighter than conventional metal pigs, the Knapp Ultra-Flex does not sacrifice strength or endurance for the convenience of light weight.

Hollow Core

The hollow body of the Ultra-Flex pipeline pig expands with line pressure to further improve the pig’s seal.

Ultra-Flex® Options

The Ultra-Flex pipeline pig is also available with an additional cup on the front of the pig to accommodate eccentric launchers.  The Ultra-Flex can be ordered with handling strap and various trackiing options.

Available in Ultrathane®

Knapp’s Ultrathane is a premium grade polyurethane elastomer custom formulated for specific job requirements.5

Polly Tri-Cup® PIG

Solid Cast Urethane Cup And Disc Fluid Control Pipeline Pig.

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Advanced Design

Strategically located cups maintain a triple seal throughout your batching and line cleaning jobs. The Knapp Polly Tri-Cup’s design allows it to easily traverse joints, valves, bends – virtually any pipeline formation!

Enhanced Flexibility

Flexible, one-piece construction ensures that the Knapp Polly Tri-Cup is always centered in the line. Result – more even cup wear and a constant triple barrier against product interface. Improves cup seal by allowing expansion of pig body by line pressure.

Maximum Strength

Tough and durable, the one-piece polyurethane body outclasses the performance of rigid metal parts in other pigs. Extra urethane in the nose section puts reinforcement where it is needed most.

Light Weight

Designed to be lighter than conventional metal pigs, the Knapp Polly Tri-Cup does not sacrifice strength or endurance. High compliance elastomers minimize cup wear and your per-foot costs, while ensuring  maximum sealing capability.  The Polly Tri-Cup is available with steel wire brushes for enhanced cleaning.

Sanitary Applications

The Polly Tri-Cup pipeline pig is available in Knapp’s exclusive Food-Grade Ultrathane for use in sanitary pipelines.

Polly Tri-Cup Conical

The Polly Tri-Cup is available in 3″ through 12″ with conical cups in some sizes.  Please check with the factory.

Nova System Pig

Knapp’s solid cast urethane pipeline pig with replaceable wear parts.

Solid Cast Urethane Disc Pig

Knapp, the original manufacturer of the solid cast urethane disc pig, has been producing this dependable line of bi-directional solid cast pipeline pigs for more than 25 years.

Metal Mandrel Pigs

Batching Pigs

Knapp manufactures batching pigs with two, or more replaceable urethane cups.

Scraping Pigs

Knapp manufactures scraping pigs with replaceable urethane cups, discs and steel wire brushes.

Bi-Directional Pigs

Knapp manufactures bi-directional pigs with two or more replaceable urethane discs.

Multi-Dimentional Pigs

Knapp manufactures multi-dimensional pigs capable of traversing two or more pipe sizes.

Metal Mandrel Pigs Options

Knapp metal mandrel pigs are available with optional bumper noses, check valve ramps, transmitter adapters and more.

Urethane Foam Pigs

Polly Pigs

Ultra-Seal Pigs

Knapp’s patented Ultra-Seal Pig is designed for demanding applications where only minimal product by-pass can be tolerated, the Ultra-Seal delivers as promised with the lowest measurable by-pass in the pigging industry. The Ultra-Seal Pig is available in numerous configurations to meet specific pipeline conditions.

Ultra-Seal Lite Pigs

Knapp’s Ultra-Seal Lite Pig is designed for pipeline cleaning and batching applications where positive scraping and sealing qualities are required but where no aggressive elements such as wire scraping brushes or abrasive coatings can be tolerated. The Ultra-Seal Lite is a one-piece urethane foam pig that us reinforced with integral urethane elastomer end discs and center post. The end discs are typically 1% – to – 3% larger than the pipe’s inside diameter and are available in hardnesses ranging from 50 Shore A to 95 Shore A Durometer. Depending upon application requirements, the foam body is available in desities from 2 lb/ft³ to 10 lb/ft³; the foam body is larger than the elastomer end discs to increase the sealing ability of the pig.

Hand-Launching Pigs

Knapp’s Hand-Launch Pig is an easy to use, one size fits all pipe of its’ diameter – a 6″ Hand-Launch Pig can be inserted, by hand, into all 6″ pipe, from Class 50 Ductile Iron Pipe to 6″ Schedule 160 Steel Pipe.

Foam Disk Pigs

Knapp’s Foam Disc Pig offers the pipeline operator a pig with the scraping ability of a disc pig and the flexibility of a foam pig. The Foam Disc’s multiple scraping surfaces provide superior wiping power in a pig that can be inserted into the system without the necessity of an expensive launcher. As with all Knapp pigs, the Foam Disc Pig is available in a variety of foam densities and coatings.

Foam Sphere Pigs

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Urethane Foam Sphere Pigs

Based on an exclusive, proprietary urethane foam system developed by Knapp, our complete line of urethane foam-bodied spheres are the toughest in the industry.

Wire Brush Sphere Pigs

By design a sphere has only a small amount of its’ surface in contact; great for flexibility, but not good for cleaning.  For the operator that needs cleaning as well, Knapp’s foam-bodied steel wire brush spheres are the answer.

Inflatable Sphere Pigs

Available in five different formulations, Knapp’s inflatable urethane spheres are manufactured with the highest quality urethane elastomer systems to give the operator peak performance and reliability.

Polly Sphere Pigs

Knapp’s patented urethane foam-core Polly Cast Spheres offer long life plus flexibility. Unlike inflatable spheres, these spheres won’t blow-out or deflate in the line.

Custom Sphere Pigs

Knapp is internationally known for its’ innovative, hand-crafted, one-of-a-kind spheres and pigs for unusual and line-specific applications.

Custom Foam Pigs

Knapp designs and builds pipeline pigs to suit specific applications from severe multi-dimnensional pipe size changes to passing through unusual fitting configurations. Contact Knapp to discuss your particular pipeline pigging requirement.

String of Pearls Pig

Spheres

 

Foam Sphere Pigs

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Urethane Foam Sphere Pigs

Based on an exclusive, proprietary urethane foam system developed by Knapp, our complete line of urethane foam-bodied spheres are the toughest in the industry.

Wire Brush Sphere Pigs

By design a sphere has only a small amount of its’ surface in contact; great for flexibility, but not good for cleaning.  For the operator that needs cleaning as well, Knapp’s foam-bodied steel wire brush spheres are the answer.

Inflatable Sphere Pigs

Available in five different formulations, Knapp’s inflatable urethane spheres are manufactured with the highest quality urethane elastomer systems to give the operator peak performance and reliability.

Polly Sphere Pigs

Knapp’s patented urethane foam-core Polly Cast Spheres offer long life plus flexibility. Unlike inflatable spheres, these spheres won’t blow-out or deflate in the line.

Custom Sphere Pigs

Knapp is internationally known for its’ innovative, hand-crafted, one-of-a-kind spheres and pigs for unusual and line-specific applications.

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