7 Ways to Extend the Lifespan of a Hydraulic Snubber

March 9, 2012

Follow these 7 steps below to maintain and extend the life span of your hydraulic snubber.

Hydraulic Snubber Assemblies for a LNG Processing Facility in Peru
Hydraulic Snubber Assembly

1. Observe the fluid level to make sure there is sufficient fluid for the snubber to operate
2. Check for leaks – If the fluid level is decreasing, determine the cause and effect remedial action.
3. Check the condition of the load pins and spherical ball bushings. Apply a high pressure grease for long-term benefits.
4. Check the condition of the exposed portion of the piston rod. Check for scoring, paint or other physical damage.
5. Check the condition of the piston rod wiper. Verify that it’s in position and working effectively.
6. Check for evidence of abuse like welding arc strikes, bent or dented parts, scratched paint, etc.
7. Finally, check the overall physical appearance. This encompasses all of the above.


Do you have a plant turnaround coming up?

October 24, 2011

Do you have a plant turnaround scheduled or planning one in the near future? PT&P is prepared to be there for you throughout the entire process. From planning, to execution, and follow-up, we have what it takes to accomplish a successful plant turnaround.

Prior to Your Turnaround:
– Call our field service team to assist with plant walk-downs to assess your plant for maintenance, repair or replacement of pipe supports and expansion joints
– Contact our quotations department for immediate pricing on pipe supports, expansion joints, or auxiliary steel needed during the turnaround.
– Consult our experienced engineers for guidance on support placement, materials, finishes, etc. to ensure optimum life of the supports.

During Your Turnaround:
– Use our field service team to guide you through installation, start-up, and replacement to safely and efficiently handle your turnaround.
– For quick delivery, PT&P stocks over 1500 bellows, over 100,000 lb. of insulation materials, over 30,000 spring coils, and over 1 million pounds of standard items

Post Turnaround:
– Receive training to monitor the supports, and identify potential failure, in order to prevent unplanned turnarounds in the future.
– Learn correct size and selection of pipe supports and expansion joints per application for any post-turnaround resolutions.
– Call on our field service team to develop a data book of existing pipe supports and expansion joints and their conditions in order to identify potential maintenance issues in upcoming turnarounds.


Metallic Expansion Joint Refurbished in 2 Days
Metallic Expansion Joint Refurbished in 2 Days

A rectangular metal expansion joint was refurbished  on an emergency   basis for a local chemical plant. Upon arrival, it was acid washed and   dye-penetrant examined for any cracks.  View the full Article

Refurbishment of 54" Pressure Balanced Elbow Turbine Crossover Expansion Joints
Refurbishment of 54″ Pressure Balanced Elbow Turbine Crossover Expansion Joints

U.S.   Bellows, Inc. refurbished two pressure balanced elbow expansion joints with a quick turnaround for a power generation plant during outages.   They are designed for high pressure turbine crossover piping. The first 54″ outside diameter expansion joint leaked from a crack in the bellows   causing an unscheduled outage.  View the full article.

4" Single Expansion Joint
4″ Single Expansion Joint

This expansion joint was received in the morning and shipped to the customer the very same day. The bellows, liner and cover were replaced and the carbon steel parts were sand blasted, cleaned and painted. A dye-penetrant test and hydro-test to 518 PSIG were performed prior to shipment. View the full article.

Same Day Turnaround Service on an 8" Single Expansion Joint
Same Day Turnaround Service on an 8″ Single Expansion Joint

This expansion joint was received in the morning, refurbished by adding new bellows and limit rods, and then shipped the very same day. New 321 stainless steel bellows were fabricated and the existing flanges were reused by sandblasting and then painting for corrosion protection. View the full article.

Let us assist you on your next plant turnaround. Our field service team is ready to help!


September 2005 News

September 4, 2005

New Patent for a High Temperature Support for Insulated Pipes
PT&P has developed a high capacity support for insulated pipes which does not rely on the insulation to carry any of the load. The design has several advantages over previous designs:

Pipe Shoe
Pipe Shoe
  • Since the insulation does not carry any mechanical load, it can be chosen solely on the basis of its thermal properties. In particular, cyclic loading, which has caused insulation failure, is not a problem.
  • The support provides effective restraint for all six possible components of loads, X, Y, Z-Rotational and Translational. In particular, axial and torsional loads are readily accommodated. These represent difficulties for supports which rely on the insulation.
  • It is easily installed in the field. It is attached to the pipe with a standard bolted pipe clamp. Thus there is no field welding.

The support consists of a shoe, similar to the PT&P Fig. 4500 Insulated Shoe Support for Hot Pipe (Hot Shoe) and two clamps, similar to the PT&P Fig. 50 Light Two Bolt Pipe Clamp. Each clamp is attached to the shoe by a steel plate which is designed to carry the design load, and is shape optimized to minimize heat flow from the pipe.

Failed Pipe Shoes

June 2001 News: Issue 2

June 22, 2001

Take advantage of our currently open shop space!
PT&P and its wholly owned subsidiaries US Bellows and Sweco Fab are manufacturers of a variety of high quality engineered products. We’re open, 24/7, to meet all your quick-turn/ emergency needs! PT&P and its wholly owned subsidiaries US Bellows and Sweco Fab are manufacturers of a variety of high quality engineered products.

PT&P has a system of stock inventory that allows us to quickly assemble and ship products such as:

*Engineered Spring Supports
*Expansion Joints
*Support Assembly Components
*Fabricated Pipe Shoes and Anchors
*Flow Products
*Slide Plates and more!

Corrosion Problems? Fight Back with Hot Dip Galvanizing

August 21, 1995

Many piping groups in E&C firms are reviewing their strategies for combating corrosion in piping components. The history of Piping Technology & Products, Inc. has been strongly influenced by industry efforts to combat corrosion, which has always been a major problem at Gulf Coast U.S.A. petrochemical plants. The bolted design we developed for variable springs was originally justified as a quality improvement for hot dipped galvanized finish. This approach allows the spring to be assembled and calibrated with no welding after galvanizing. Prior to this PT&P innovation, the heat from welding could damage both the finish of the welded component and the neoprene coating of the spring coil inside the can. The thousands of springs we have supplied with hot dipped galvanized finish and neoprene-coated coils have proven the validity of this approach as the most cost-effective way to prevent corrosion.

Hot dip galvanizing is a unique process which develops a metallurgical bond of zinc-iron alloy between the zinc coating and the steel product it protects. It provides a continuous layer barrier which physically isolates the steel from the environment. Painting, on the other hand, is a barrier coating which is subject to damage from contact (scratching). Hot dip galvanizing provides a much longer life than painting in corrosive environments partly because zinc forms protective oxide and carbonate films which reduce the rate of corrosion dramatically. Steel exposed to the same environment will corrode at a rate of about twenty-five times the rate of zinc. Zinc also resists accelerated local corrosion even when its outer film has been broken or scratched. The actual rate varies with the electrolyte at the surface.

We provide various types of finishes for corrosion. Contact us for the right finish for your application.