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Hydraulic Snubbers — The Pipe Supports Blog

Hydraulic Snubbers Designed for LLDPE Chemical Plant

June 17th, 2016 Comments off

Hydraulic Snubbers Designed for LLDPE Chemical Plant

These Fig. 511 AD long hydraulic snubbers were created for a linear low-density (LLDPE) chemical plant in Louisiana. The snubbers with two (2) rear brackets range in length from 34-⅝” to 49”. They are designed with spherical, self-aligning ball bushings that allow for + 5° of angular motion or misalignment.  The snubbers can handle maximum loads varying up to 5520 lb. Cylinder sizes are 1-½” and 2-½” and have a 6” stroke. The hydraulic fluid is petroleum based and the seals are a mix of buna-nitrile and polyurethane and the pressurized hydraulic reservoir allows mounting in any spatial orientation. The snubbers are painted with a primer that utilizes zinc filled powder manufactured by Tnemec. Ⓡ  The formulation for the primer is Series H90-97 | Tneme-Zinc.

Shock Control, Restraint & Support Devices Webinar

June 9th, 2016 Comments off

This webinar is over, view the recording in the webinar archives

140,000 lb. Load Adjustable Hydraulic SnubbersExplore the various applications of snubbers, sway braces and sway struts in piping systems and equipment. Learn how these products help prevent pipe system failure due to seismic loads, flow transients, wind loads, safety valve thrust loads or pipe rupture. Discover the various tests performed within PT&P’s facility to ensure product quality, including cycle testing, travel testing and load testing. Finally, view the value-added services offered by PT&P and rest assure that your shock control, restraint and support device needs can be covered by our 24×7 web-based emergency services, field services and quick-turn around time when you need it most.

The featured presenter, Jerry Godina has over 13 years experience as a pipe support designer and manages PT&P’s engineer training development program. He also inspects existing supports, consults on site remediation projects and oversees installation on a regular basis.

Hydraulic Snubber Designed for a Gas Turbine in a Natural Gas-Fired Combined Cycle Generating Power Plant

December 14th, 2014 Comments off

Hydraulic Snubber Designed for a Gas Turbine in a Natural Gas-Fired Combined Cycle Generating Power Plant

Fronek Anchor/Darling Enterprises Inc., a division of PT&P designed and fabricated this hydraulic snubber assembly for a gas turbine in a natural gas-fired combined cycle generating power plant in Pennsylvania. This fig -510AD is designed for a 10,000 lb. load and a 6″ stroke. It measures 28-1/2″ pin-to-pin and has a 2-1/2″ diameter cylinder. It is designed for an operating temperature of 1052°F and a movement of 4-1/8″. This snubber was tested using the STADAS test machine prior to shipping.

Hydraulic Snubbers Designed for a Geothermal Facility

March 19th, 2012 Comments off

Hydraulic Snubbers Designed for a Geothermal Facility

Fronek Anchor/Darling Enterprises, a division of PT&P designed and fabricated hydraulic snubbers for a geothermal facility in California. The Fig. 510 AD snubbers ranged in size from 34-3/4″ to 37-5/8″ piston-to-piston and were designed for a 50,000 lb. maximum load, 5″ cylinder size and a 6″ stroke. The Fig. 511 AD snubbers ranged in size from 56-15/16″ to 59-5/16″ P-P and were designed for a 20,000 lb. maximum load, 2-1/2″ cylinder size and a 6″ stroke. Hydraulic snubbers are designed to protect the piping system when a sudden, heavy load is applied (such as an earthquake of high intensity), which can cause serious vibrations leading to complete destruction. A custom three-bolt pipe clamp fabricated from carbon steel was designed to fit in a limited space. A cycle test throughout the full stroke from zero to fully extended was performed prior to shipment.

Snubbers: A General Overview

December 3rd, 2010 No comments

We recently posted a new Snubber article on our website.  It provides a technical look into both hydraulic and mechanical snubbers – how they are used in a piping system and how they function.  Most importantly, the article tells you the difference between various types of snubbers which is helpful in choosing the appropriate snubber for your piping system needs.

Snubbers: A General Overview

14 1/2" diameter 225,000 lb. load Hydraulic Snubber

14 1/2" diameter 225,000 lb. load Hydraulic Snubber

Want to learn more about snubbers? Watch a recording of a past snubbers webinar now!
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Hydraulic Snubber Assemblies for a LNG Processing Facility in Peru

November 1st, 2010 No comments

Hydraulic Snubber Assemblies for a LNG Processing Facility in Peru

These hydraulic snubber assemblies were designed with maximum load capacities ranging from 1700 lb. to 59,400 lb. All of the snubbers were provided with an overall stroke of 6” and were preset to the midpoint of the total stroke, meaning that during operation, these snubbers could accommodate piping deflections of  +/- 3” from the installed position.

Hydraulic Snubber Assemblies for a LNG Processing Facility in Peru

The piston diameters range from 1-1/2″ to 6″ and the total assembly length ranges from 31-1/2″ to 220″. The largest assembly required a custom extension section to eliminate the risk of buckling under compression loads. Two-thirds of the assemblies included dual end brackets and the remaining assemblies included an end bracket/clamp combination. The housing, extension piece and end brackets are fabricated from carbon steel, while the cylinders, pins and two of the end brackets are fabricated from polished stainless steel. Standard “lock and bleed-down” tests were performed prior to shipping to a LNG processing facility in Peru.

Do you require a shock control device in your piping system? Price a snubber today!

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Hydraulic Snubbers in Assembly

June 9th, 2000 No comments
Hydraulic Snubbers in Assembly

Hydraulic Snubbers in Assembly

Shown above are hydraulic snubbers which are used to protect critical components in refineries, power plants and other industrial plants from sudden movement by the attached piping system. Engineers specify these for systems subject to sudden accelerations caused by earthquakes, extreme wind loads or water hammer.Hydraulic snubbers resist sudden rapid movement of the pipe by limiting the flow rate of the fluid inside the snubber. The device is designed to slow movement, such as would be expected during thermal expansion, has practically no resistance, but sudden rapid movement is resisted with a force proportional to the velocity raised to a power, where the power is determined by the orifice valve and flow pattern in the design. Selection of materials and liquids used will depend on the environment where the snubber is installed.

In need of new hydraulic snubbers? Get pricing today!

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