1. Rupture Pin Technology, Inc.
Welcome to Rupture Pin Technology.
This PowerPoint presentation is a guideline for conversation. Please feel free to stop me at any time and ask questions.
This PowerPoint presentation is designed for the person that does not even know what a rupture disc is.

2. Two types of Pressure Relief Valves
Resetting
Non Resetting
Three types of Non-resetting Pressure Relief Methods
Rupture / Buckling Pin
Rupture Disc
Shear / Breaking Pin

3. Shear / Breaking Pin Valves
Shear pin valves are designed to shear a pin, in the horizontal position, that sits on a piston with sharp edges. When the pressure reaches set pressure, the pin is sheared.
Pulsation will damage shear pin.
Time will dull piston edges designed for shearing.
Can only sense system pressure.
Not reliable or accurate.
NOT ASME APPROVED!
Most Shear Pin Valves are used in the oilfield on positive displacement pumps used in drilling. Commonly called mud pumps.
Breaking Pin valves are mostly used in food services.
The pin is in a horizontal position and is sheared when a piston with sharp edges applies enough pressure. When the piston has worn edges and the pin has been damaged from pulsation, this will cause what is called slop in the valve. The set pressure will become a guessing game.

4. Rupture disk is an internal device
Rupture disk is an internal device. You will need some sort of an indicator to show a leaking or burst disk.
Rupture Disk
A rupture disk is a piece of metal plate sandwiched between two flanges. As system pressures change and the disk flexes with the changes in pressure or pulsation, the properties of the disk will change and cause premature failure of the disk.
Since a rupture disk is an internal device, you will have to have a pressure gauge or some other device on the down stream side to tell if you have leaks or a ruptured disk.
Also since the rupture disk senses differential pressure only, your set pressure is a guessing game if you have a leak in the disk causing back pressure.
Rupture disk will require extended downtime to break the integrity of your system to inspect or change. Rupture disk must be installed properly by experienced personnel and may require protective equipment.

5. Rupture disk have a manufacturing allowance and an ASME tolerance.
The Rupture Pin Valve only utilizes the ASME tolerance of + 5%. There is no manufacturing allowance.
THE RUPTURE PIN VALVE OPERATES AT +95% OF SET PRESSURE.

6. Mr. Taylor invents the Rupture Pin Valve using Euler's Law of Compressed Columns
obtains patent and ASME acceptance for the Buckling Pin Technology.
Commercial sales starts in 1990 through Rupture Pin Technology.
Buckling Pin Accepted
ASME Section VIII Division I Code Case
API RP-520 Part One – Section 2.4
The National Board of Boiler and Pressure Vessel Inspectors – (Test system is protected by a Rupture Pin Technology valve.)

7. Rupture Pin Valve protecting the system at The National Board Testing Laboratory in Columbus, OH
This is a photo of the Rupture Pin Technology, Model D, valve that is installed at the National Board of Boiler and Pressure Vessel Inspectors Laboratory in Columbus, Ohio. The National Board is a certified ASME testing facility.
The National Board of Boiler and Pressure Vessel Inspectors protects their test facilities with the Rupture Pin valve.

8. (like the Law of Gravity)
Introduction
Proven technology based on Physical Law – Euler’s Law of Compressed Columns –
(like the Law of Gravity)
Allows you to solve difficult problems with pressure relief and emergency shutdown
The technology relies on a simple, precise pin that senses an axial force and obeys Euler’s Law.
The pin acts as a trigger to open or close a bubble tight valve (ASME class 6) element in milliseconds.
Like the Law of Gravity, when you trip and fall down, you know that you will hit the floor. With Euler’s Law of Compressed Columns, by controlling the three factors, we can accurately predict at what set pressure the pin will buckle.

9. Euler’s Law of Compressed Columns
PIN DIAMETER4 x
PIN MATERIAL MODULUS OF ELASTICITY
AXIAL FORCE ON THE PIN CAUSING THE PIN TO BUCKLE ~
PIN LENGTH2
Euler’s law is a function of the 4th power of the pin diameter times the Modulus of Elasticity of the Pin material, divided by the Pin length squared. Rupture Pin diameter is used for significant set pressure tuning and length adjustment is used for fine tuning.
(Pronounced Oilers)
There are three main factors that make up Euler’s Law – Pin Diameter, Pin Material Modulus of Elasticity, and Pin Length. If you know these three factors, you can accurately predict when the column will collapse, in this case the pin will buckle. This is what makes the Rupture Pin Valve so accurate and dependable.
(piston/plunger surface area x system pressure)

10. The Pin
A slender, round column, precise in its diameter, length, and metallurgy that obeys Euler’s Law.
The pin ends are restrained for precise, repeatable operation
Pin has only two stable conditions: Straight or Buckled
The buckling point is accurately repeatable with no adverse buckling point variation.
The pin cannot fail early due to fatigue or pulsation.

11. The Pin Characteristics
Obeys Euler’s Law precisely
The buckling point is exact, ± 5% of set point is standard, ± 2% of set point is common with actual valve test certificates
The pin is external from aggressive system fluid
No Temperature correction is required
Bows elastically to allow a slight axial piston movement before buckling
Currently have built valves from 1/8” to 36”
The pin obeys Euler’s Law and buckles precisely at set point
The buckling point is exact, ± 1% of set point is common with actual valve test certificates.
The pin is external from corrosive fluid. Corrosion is easy to eliminate by using a stainless or alloy pin material. Plating or coating is also possible. Corrosion of the pin is not a factor in the application.
The modulus of elasticity is the only factor that is temperature sensitive. Materials used for the pin have a constant modulus of elasticity over the ambient temperature range experienced during use.
One of the most important characteristics of the pin is that the pin bows elastically to allow a slight axial piston movement. For instance, the elastic bow of the pin will allow about a .009” axial piston movement with a 2” valve. This is more than enough to remove built-up friction before set pressure is reached. This movement breaks loose any seal cold vulcanization or penetration of the elastomer into the minor surface roughness of the metal seat over time. The result of piston movement, the seal friction returns to that experience when the valve was tested prior to shipment. The set point is held.
6. These are the sizes of valves Rupture Pin Technology currently has in service.

12. Tinius-Olsen Test Increase of force on pin
A rapid fall-off of pin resistance
Speed of buckling
The opening of the valve is about 10 times faster than a rupture disk.
1.7 milli-seconds
The main reason for this slide is to point out how rapid the pin buckles and why it is perfectly suited for the Rupture Pin Valve.
Notice the time line of the graph – 1.7 milliseconds. This is on a 1” valve at 900 psig.
The opening of the valve is about 10 times faster than a rupture disc. Rupture Disk are have been measured at 17 to 20 milliseconds.

13. This graph will show how the rupture disk will exceed its elastic limit (1) and not burst (3); therefore changing its basic properties and burst pressure.
The buckling pin will buckle (in the gray area of the buckling pin graph.) before it gets to its elastic limit (1).
This graph will show how the rupture disk will exceed the elastic limit (1) of the material and not burst (3); therefore changing the basic properties of the material and burst pressure.
The buckling pin will buckle when it gets to the elastic limit (1) of the pin material; therefore fatigue and pulsation are not a factor.

14. Rupture Disc's Major Problems
RUPTURE PIN SOLUTIONS TO RUPTURE DISC PROBLEMS
Rupture Disc's Major Problems
Rupture Pin Solutions
Discs fatigue and usually fail early
Rupture Pins can not fatigue
Buckles at set point
Working close to set point is impossible.
Maximum operating pressure to 95% of set point. (Zero leakage at set point)
Downstream fragmentation. 
No downstream trash possible.
Senses differential pressure only. 
Can sense upstream pressure only or differential pressure only.
Discs can be installed backwards or improperly.
It is difficult to imagine a pin installed improperly.
Discs are in contact with corrosive system fluids.
Pins are external to the process fluid and are made of corrosion resistant metals.
Costly storage and handling required.
Rugged - can be stored at the valve.
Costly time is required to change discs.  May require "suiting up".
Pin changing is done with one man in minutes - even with 30" valves.

15. The Rupture Pin Advantage Over Conventional Relief Systems
Conventional spring loaded relief and pilot valves leak close to set pressure, and have problems reseating tightly.
Designed to begin relieving at 90% of set pressure and require 10% over set pressure for full capacity.
Spring loaded must be recertified at least once a year. (Depending on State Laws and Company Policies.)
Poor accuracy below 15 psi, and limited reliability over 3,000 psi. Rupture Pin valves are accurate through all pressure ranges.

16. Rupture Pin Valve mounted before a Taylor Pressure Safety Valve
Protects PSV from pulsation and fatigue
No orifice restriction before PSV
Full bore flow thru Rupture Pin Valve
Bubble tight seal until set point
Balanced piston design so “trapped” pressure between valves is not a factor
No line breakage and easily reset to get back into operation
No recertification required for the Rupture Pin Valve
Extends the life of the PSV
No tattletale required
No trash after relief to damage PSV

17. Valve Basics Model “C” Relief Valve
Rupture Pin resists the force of the system pressure acting on the piston area.
Pin buckles at a precise set pressure in milliseconds according to Euler's Law of Compressed Columns.
Piston is only moving part.
Piston on which system pressure acts.
This is the Basic Model C Rupture Pin Valve.
System pressure is measured on piston face. Pressure is transferred to pin via the piston. Pin will buckle at set pressure.
Only one moving part!
Bubble tight seal till buckling then full bore open for relief.
Notice that the bubble tight seal is on the vertical surface of the seat. When the piston moves when the pin bows close to set pressure, you will still have a bubble tight seal.
Notice o-ring seal is on vertical surface inside of Seat. Bubble tight seal until pin buckles.
Full bore relief instantaneously.
CLOSED - PRESSURE BELOW SET POINT
FULL OPEN - PRESSURE AT SET POINT

18. Valve Basics Model “C” Relief Valve With Balanced Piston
Equal Surface Areas
Creating equal opposing forces negating downstream pressures.
This is the basic Model C Rupture pin valve with a balanced piston.
This will negate any downstream or back pressure.
The balanced piston has equal surface areas creating opposing forces; therefore negating any downstream pressure. Valve will sense system pressure only.

19. Mr. Lee Sudik our “Pin Guru”
16” Model C
Mr. Lee Sudik our “Pin Guru”
Lee Sudik with a 16” valve with ¾” diameter pin. Lee is our “pin guru” and has been with Mr. Taylor for 35+ years.

20. Mr. Taylor with 36” Model C
This valve was built for ARAMCO, the Saudi Arabian oil company. Notice the two stable conditions of the buckling pin – straight or buckled.
The pin Mr. Taylor is holding, is 1 1/8” in diameter and 48” long. The set pressure of this valve is 36 psig. This illustration shows that you can’t tell set pressure by pin size. Pin size is determined by Euler’s Law.
Julian Taylor with 36” Model C, 1.125” pin diameter, 48” pin length, and set pressure 36 psig.

21. These past photos show our ability to custom build valves to solve your problems.
1/2” Solid Titanium
All Titanium model C ½ inch 1500# rated.
These last three slides show you the wide range of valve sizes and material that we can make for you.

22. Huntsman Corporation – Texas City, TX
The valve may be orientated in any direction. We just need to know how the customer is going to mount the valve so we can consider it when setting the pin. If we are not told any different we will set the pin with the valve mounted vertical.
8 - 24” Valves installed on the largest flare system in North America at the time of installation. This system is located on the Texas Gulf Coast.
This slide also shows that we can orientate the valve in any direction. We just need to know how the customer is going to mount the valve so we can consider it when setting the set point. If we are not told any different we will set the valve mounted vertical.
Huntsman Corporation – Texas City, TX

23. Model “D” Inline Relief Valve
Same as C, but D valve is Inline.
Closed – Rupture Pin resists the force of the system pressure acting on the piston area.
Open – Buckles at a precise set pressure in milliseconds. Valve opens full.
Closed
Open
The Model D valve is used when you need to install a valve in a straight line.

24. notice proximity switch
Will give an immediate signal when a valve is activated.
Model D Inline Valve – can be flanged, threaded or Grayloc connections.
Notice the proximity switch mounted on the bonnet of the valve.

25. Easy pin storage at the valve.
Two 8” Model D valves ready for shipment – Notice the pin holders.
notice pin holder

26. Model D valve installed with pin holder mounted on top plate.
Model D valve installed. Pin holder mounted on top plate instead of bonnet.
Model D valve installed with pin holder mounted on top plate.

27. Model CM Steam Jacketed Valve With Flush Port
The Model CM has the piston surface at the top of the process piping to eliminate any voids in the system for chemicals that can plug ordinary valves.
Notice the steam jacket. Any of our inline valves can be steam jacketed.
Notice the flush port.
The piston face is flush with the process piping, steam jacketed piping for heating, and flush port for cleaning the seat before reseating the piston.

28. Piston will be flush with inside of vessel.
Left - Several Model CM valves with steam jacketed valve bodies ready for shipment.
Right – 6” Model CM, all 316 Stainless Steel, with nose extension and flush port – This valve was designed to relieve pressure on an O2 reactor vessel at a paper mill.
Top – This photo shows how the piston face in flush with the nose extension on the 6” Model CM.
Georgia-Pacific Paper Company
Dial Soap Corporation

29. To: Lee Levisay
From: Don Berry, Georgia-Pacific, Wauna
Re: Rupture Pin
Date: November 3, 2004
Lee,
I would like to thank you for introducing me to your product. Previously we were using a rupture disc from XXXX Inc. While this was a good product, the time to change the disc is 10x as much as the time to change the buckling pin. In addition to the ease of maintenance, I am impressed with the amount of (or lack of) preventative maintenance on your Pressure relief devise.
Again, your buckling pin has saved us money already and will continue to do so in the future.
In the future, if any of your customers would like to talk to me before they make their decisions, please have them give me a call.
Don Berry
Georgia-Pacific, Wauna
Bleach Plant Maintenance Planner/ Supervisor

30. Model H High Pressure – Low Volume Valve
Model H valve is designed for high pressure and low volume.

31. Shell Offshore – Auger Platform – Gulf of Mexico
15,000 psi set pressure
4 at 9500 psi set pressure
High Pressure Model H relief valves on Shell offshore platform – Auger – in the Gulf of Mexico. Valves in center of picture are set for 9500 psi and the other three in the photo are set at 15,000 psig.
Shell Offshore was using conventional spring loaded relief valves on these chemical injection pumps. The valves were mounted on the discharge of the pumps and were leaking, since they had the outlet relieving into the suction of the pump, they found that they were recycling all their chemicals and were not getting the chemicals to the place needed. With the Rupture Pin valve, they have a bubble tight seal up to set point. They will also have a visual indication and a proximity switch alarming the operator to a valve action. Shell now knows when they are recycling chemicals and can take appropriate action.
Shell Offshore – Auger Platform – Gulf of Mexico

32. This is a good example where the Rupture Pin Valve replaced conventional spring loaded valves.
The valves are mounted on the discharge of positive displacement chemical injection pumps.
The conventional valves were fatiguing and leaking due to the pulsation factor.
Shell Offshore found that our valve would keep a bubble tight seal until the system was over pressured. They would then get a signal from the proximity switch or visual indicator by observing the pin condition.

33. Model I High Pressure - High Volume Valve
Model I is used for high pressure – high volume.
Notice the inlet is backwards then other designs. This done to better control the forces when the valve opens.
We are using a variation of this design to build a valve for NASA at the John Stennis Space Center in Gulfport, Mississippi. The valve will be installed on the rocket engine test facility. It is a 3” valve with a set pressure of 9450 psi.
Notice the pressure is sensed on the stem area and not on the piston face. The lower o-ring sealing area is smaller then the upper o-ring sealing area; therefore creating an axial force that is much lower and easier to control.

34. 2” valve with a 5500 psi set pressure
ExxonMobil Chemical – Baton Rouge, LA
2” valve with a 5500 psi set pressure
Model I high pressure – high volume Rupture Pin Valve. This is a 3” all Stainless Steel valve with a set pressure of 5500 psi.
Installed for ExxonMobil in Baton Rouge, LA. They choose our valve because it is installed downstream of a compressor and pulsation is not a factor with our valve.
This valve is installed downstream of a compressor because the pulsation will not fatigue the pin or change the set pressure.

35. Options to Rupture Pin Valves
Fire Safe Holding Nut
Proximity Switch
On Site Pin Holder
Pin Guard
Options to Rupture pin valves.
Fire Safe Holding Nut – in case of fire, center of holding nut is burned out and the pin in released causing the valve to shutdown or relief, whichever action is required.
Proximity Switch – sensor will indicate piston movement and will send signal back to operator alerting of valve action.
On Site Pin Holder – Convenient spare pin holder at the valve.
Pin Guard – this is made of Stainless Steel. It is perforated so you can see the condition of the pin. Side Note – this was originally designed for valves we have in the artic region of Alaska. The Polar Bears are extremely curious animals, so we put the pin guard on there to keep them from messing with the pin and injuring themselves. (valve pictured is a 10” hastalloy C-276 wetted, stainless steel valve)

36. Typical Customers
Chemical – Agrium, Arizona Chemical, Eastman Chemical, GE Plastics, National Starch
Food Processing – Amalgamated Sugar, Miller Brewing Co., Carnation
Pharmacial – Bayer, Baxter Medical, Eli Lilly
Pipeline – Alyeska Pipeline Service Co., TEPPCO, Olympic Pipeline, ConocoPhillips Pipeline, El Paso Natural Gas, Enterprise Prod.
Production – Phillips Alaska, Shell Offshore, BP Exploration, ExxonMobil, Unocal Oil & Gas
Pulp & Paper – Georgia Pacific, International Paper, Stone Container, Weyerhaeuser

37. Use this flash animation while doing the demo.
Contact Lee Levisay, with Rupture Pin Technology, if you have trouble running this slide.
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