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White Paper: Instrumentation Cryogenic Valves

Posted on Sep 7, 2017 in News & Events, Product News, White Papers |

Published on: Oct 16, 2017 By: Louis J. Arcuri, Director of Sales & Marketing, Valcor Scientific Instrumentation Cryogenic Valves — Their proper design and application Questions? Contact Us! Name * E-Mail * How can we help you? Cryogenic media enhance our daily lives in so many ways. Our most frequent encounter with the byproduct of cryogenic gas usage is in our food chain. Much of the frozen food we buy is flash-frozen in cryogenic freezers that use liquid CO2 (LCO2) and more commonly, liquid nitrogen (LN2). Vegetables, poultry, fish, and beef are all flash-frozen in immersion cryogenic freezers. Commercially baked goods are cooled much more quickly, and ready for packaging using LN2 vapor. Frozen ice cream novelty treats are flash-frozen in an LN2 bath. Beverages like beer, soda, and sparkling drinks are often carbonated with LCO2 from bulk storage systems. Cryogenics are popular because they’re effective, relatively inexpensive, and don’t affect the color, taste, or flavor of the foods and beverages with which they come in contact. With the advent of microbulk systems, cryogenic cooling is available to more food and beverage processors than ever before, especially small customers who could otherwise not afford the large bulk tanks often seen outside of large-scale producers. Environmental test chambers use solenoid valves to control the flow of LN2, enabling testing at temperatures to -320° F. Environmental chambers are used for testing all manner of components, devices, and systems. They can simulate the cold of deep space; or arctic ambient conditions. Combinations of cryogenic gases are used for a type of surgery known as cryosurgery. LN2 is directly applied to many skin maladies for freezing and removal such as warts, moles, and skin tags. Liquid Argon (LAR) is often used to create a freezing point at the tip of a probe. LAR treatments include freezing of tumors and cancerous tissue. Cryoablation prevents arterial fibrillation in cardiac patients. Cryofreezing minimizes damage to the surrounding healthy tissue. LCO2 is frequently used for cleaning and deburring. CO2 snow cleans surfaces quickly and efficiently, leaving no residue behind. CO2 cleaning is frequently used in optics manufacturing, painted surface preparation, and some semiconductor devices. Dry Ice, or frozen CO2, is used as an abrasive to deburr parts that are too delicate for traditional glass beading or sand blasting techniques. CO2 is also a great solvent; it is often used in a supercritical state to extract the essential oils that are associated with flavors and fragrances. It is also used to decaffeinate coffee and tea, and in sometimes to dry clean fabrics! Finally, we all enjoy the special effects created by LCO2 fogging machines! Whether at a rock concert, or on a Broadway stage, the low-hanging CO2 fog...

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Valcor Aerospace: A strong heritage providing value to the Aerospace Industry for over 60 years

Posted on Oct 21, 2015 in News & Events, Product News |

Published on: October 21, 2015 By: Valcor Aerospace Valcor Aerospace: A strong heritage providing value to the Aerospace Industry for over 60 years Valcor was founded in 1951 in a small industrial loft in Newark, New Jersey, by Morton Kreitchman. The first valve design was a “floating seal” fuel control valve for the aircraft industry. Since that time, Valcor has evolved into a thriving company specializing in fluid control products for Aircraft, Space, Industrial, Scientific and Nuclear applications. With over 60 years of proven experience in the Aerospace industry, Valcor is always at the top of any buyer’s list for potential suppliers for fluid controls. An important consideration for any Aerospace company purchasing fluid control devices for their programs is product heritage. Valcor developed its heritage by being an engineering company and working with major players in the aerospace industry. The design and development of cutting edge technology in aerospace takes time, expertise, and strong partnerships. Valcor understood this approach early on and implemented it into their business plan. Valcor integrates our proven valve technology into the next generation of valves, which then can be utilized on the latest space platforms. The connection to our strong heritage is a highly valued attribute by Valcor’s customers. A Brief History Valcor products have been used in many major spacecraft and launch vehicle programs over the last 60 years. Valcor hardware can be found on the moon, orbiting around the earth and even in deep space. One of Valcor’s first platforms was the Mercury Program where Valcor supplied a valve in the fuel cell system of the Mercury Capsule. Valcor provided isolation valves for the descent stage engines of the Apollo lunar modules. Cold gas thruster valves were supplied for Skylab. In the 1980s, Valcor further increased its aerospace design capability with the acquisition of the Aerospace Operations Division of Walter Kidde & Company. This acquisition provided Valcor with engineering talent, as well as an extensive line of secondary propulsion and fluid control components. Valcor continued building its heritage throughout the 70s, 80s, and 90s. Platforms included feed, drain, and latching valves for the Space Shuttle program, a fast-acting thruster valve for the ERIS missile interceptor, environmental system control valves for the International Space Station, and liquid lithium valves for the SP-100 Spaceborne Reactor. In the late 90’s Valcor designed and qualified numerous valves for the first and second stages of the Atlas V and Delta IV platforms. These valve designs included pressurization valves, vent & relief valves, and purge valves. Valcor has continued our dominance in the space market by providing a wide variety of valves for other vehicles. The importance of strong heritage and engineering expertise Imagine for a moment...

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New Brochure on the Nuclear Group’s Capabilities is Now Available!

Posted on Mar 6, 2015 in News & Events, Product News, White Papers |

Published on: March 6th, 2015 By: Valcor Nuclear Valcor’s Nuclear Product Group has just released its brand new capabilities brochure. Within its pages you can get a feel for the vast capabilities of this group and the years of experience behind the products. You can download the pdf version here. If you would like to request a print copy, kindly fill out our contact form here and mention the brochure in the questions/comments section. Valcor Nuclear provides high quality flow control devices to the nuclear power industry including nuclear power plants, laboratories and waste treatment facilities. For decades, Valcor has earned a reputation of dependability with an expansive installed base of valves and related components in the US and international nuclear market. About Valcor Valcor Engineering Corporation (www.valcor.com), founded in 1951, designs and manufactures solenoid valves and control components for liquids and gases in critical applications in the aerospace, nuclear, light industrial and scientific industries. Headquartered in Springfield, New Jersey, Valcor’s world-class staff of engineers, designers, and technical support personnel utilize fully-equipped, modern test facilities to test the most precise and exacting standards. With a library of more than 18,000 designs, Valcor’s design team can modify existing technology to suit practically every hard to handle application. Valcor specializes in custom applications and can create an entirely new product to meet your needs. For more information, contact Jennifer Eckert of Valcor Engineering at 973-467-8400, ext. 7228 or email...

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Valcor Opens a New State-of-the-Art Cleanroom

Posted on Oct 29, 2014 in News & Events, Product News |

Published on: October 28th, 2014 By: Valcor Engineering VALCOR OPENS A NEW STATE-OF-THE-ART CLEANROOM Valcor Engineering, a designer and manufacturer of solenoid valves and control components for liquids and gases, is proud to announce the opening of its brand new cleanroom. The new cleanroom will be used for parts cleaning and clean parts bagging. Valcor’s new cleanroom is a certified ISO 5 or Class 100 controlled cleanroom environment. It utilizes laminar unidirectional flow from ceiling to floor. The ambient air outside in a typical urban environment contains 35,000,000 particles per cubic meter in the size range 0.5 µm and larger in diameter. An ISO 5 cleanroom or class 100 has 3,520 or less 0.5 µm particles in the same measured space. Cleanrooms limit airborne particles to specified limits, allowing the production of very sensitive materials. Valcor customers can be assured that they are receiving quality materials that meet our new certified standards. “The construction of this new clean room was both strategic and operational,” states Tom Iervolino, Vice President of Business and Product Development. “The volume growth of our business necessitated we build a larger room and also provided us an opportunity to exceed current customer requirements in anticipation of changes in the market and future minimum standards.” About Valcor Valcor Engineering Corporation (www.valcor.com), founded in 1951, designs and manufactures solenoid valves and control components for liquids and gases in critical applications in the aerospace, nuclear, light industrial and scientific industries. Headquartered in Springfield, New Jersey, Valcor’s world-class staff of engineers, designers, and technical support personnel utilize fully-equipped, modern test facilities to test the most precise and exacting standards. With a library of more than 18,000 designs, Valcor’s design team can modify existing technology to suit practically every hard to handle application. Valcor specializes in custom applications and can create an entirely new product to meet your needs. For more information, contact Jennifer Eckert of Valcor Engineering at 973-467-8400, ext. 7228 or email...

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White Paper: Solenoid Valve Leakage

Posted on Sep 9, 2014 in News & Events, Product News, White Papers |

Published on: Sept 9, 2014 By: Valcor Nuclear A White Paper on Solenoid Valve Leakage — Identifying Root Causes and Methods for Eliminating Leakage Leakage in solenoid valves are classified as external and internal. External leakage is generally easy to identify and eliminate. The majority of external leakage comes from degraded O-ring seals, either worn out from usage or incorrectly installed. The solution to eliminate this leakage is to correctly install a new O-ring. Solenoid valves that use diaphragms as a sealing member can also experience external leakage via wicking through the diaphragm. Wicking is a process whereby the pressurized fluid journeys through the diaphragm material between the rubber and reinforcing material of the diaphragm. Solutions to eliminate wicking would be to use a non-reinforced diaphragm (or solid diaphragm), or use anti-wicking compounds of the diaphragm material. The focus of this white paper will be on internal leakage, or often termed, seat leakage. Internal leakage is defined as the process fluid passing through between the valve seat and sealing member (Obturator) when the valve is in the closed position. The obturator or disc can be either soft (elastomeric), or hard (metal to metal). When specifying seat type, the factors to consider when determining what type of seat material to be used are: Process medium differential pressure, temperature, Fluid type (gas versus liquid), Process medium composition (chemical resistance and fluid compatibility with seat material) Customer preference/specification. The effects of seat leakage can range from just an annoyance in non-critical applications to damaging in systems that cannot tolerate any amount of leakage. In any case, seat leakage is generally not an acceptable condition. However, there are some cases where a design specification will allow for certain leakage rates. This is typical in metal to metal or hard seating constructions. What are the causes of seat leakage? Normally, the main cause of seat leakage is foreign materials in the process medium. Particles in the medium become trapped between the seat and the sealing disc causing seat leakage, either by creating a gap between the parts or creating an indentation or cut in the parts. Typically, these seat leakages start out small. However, depending on the process fluid and the pressure of the fluid, a small leakage can escalate quickly to a high leakage rate. In these cases, the surfaces of the seat and disc can erode in ways like steam flashing and high velocity erosion. The high velocity of the liquid traveling thru the leakage path can erode the sealing surfaces, eventually leading to a high rate leakage and/or failure. The installation of the valves into the piping system, whether by NPT threads or welding, can introduce foreign materials. Pipe tape or...

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Aircraft Capabilites & Products

Posted on Sep 4, 2014 in News & Events, Product News |

Valcor Aircraft Capabilities & Products As a custom fluid control device designer and manufacturer, Valcor has provided fluid control solutions to the aircraft industry for over 60 years. Valcor is a manufacturing company that works closely with our customers to create a custom engineered solution to their demanding fluid control requirements. Valcor has produced hundreds of qualified aircraft products, for fixed wing and rotorcraft, with superior reliability. These platforms include: Fuel Control System Components Hydraulic Control Components Environmental Control Systems Components Aircraft Control Systems Components Fuel Control System Components Solenoid Operated Control Valve Shut off Valves APU Valves Fuel Transfer Valves Dump Valves Fuel Management Systems Pressure Regulators Fuel Inerting Systems Valcor’s first design, created over 60 years ago, was a floating seal shut-off valve. Valcor has produced over 3 million of this extremely reliable, lightweight, and compact design. The V5000 design is Valcor’s “flagship” design and uses a floating seal design that has demonstrated superior longevity in high contamination environments. Chances are that this valve design can be found on every commercial aircraft in service, anywhere in the world. V5000 Series Valve Variants of this design are used for APUs, fuel control, and fuel management systems. Valcor provides custom designs to meet customer’s specific system requirements, such as interface/envelope, materials, and power. Shown below is an APU fuel shut-off valve that includes position indication. This valve has custom mounting and an environmentally protective hard coating. Aircraft Mounted APU Fuel Shut-off Valve Valcor can retrofit designs where other vendors cannot meet performance. Valves can also be designed with special functions such as position indication, manual override, and back pressure relief. Plug-in Style Fuel Control Valve with Position Indication Pilot Operated, Parallel, Redundant, High Flow With Manual Override and Back Pressure Relief Valcor’s design capabilities include manufacture of entire system assemblies. An example of this is an aircraft fuel management system containing a pump, 5 solenoid valves, relief and check valves, and pressure and temperature sensors. For this application, Valcor was able to help the customer significantly reduce overall system weight by designing the entire manifold. Fuel Management System Hydraulic Control Components Hydraulic Accumulators (Piston and Bellows types) Solenoid Operated Control Valves Relief and Check Valves Valcor offers several hydraulic control component designs. A major product line are our hydraulic accumulators. Valcor has been a leading manufacturer of hydraulic accumulators for aircraft, helicopters, and ground vehicles for over 20 years. Accumulator types include self-displacing and non-displacing, piston and bellows configuration, and cylindrical and spherical configurations. Valcor also produces maintenance free accumulator designs that are currently on several active platforms.Valcor’s use of advanced composite structures and innovative metal forming techniques produce extremely lightweight designs. Valcor’s facilities are equipped to manufacture fiber...

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