Robco Expert

  What is standard API 622? By J.Melançon - Robco Inc. API 622 is a standard developed by the American Petroleum Institute (API) that specifies the requirements for the design, testing, and performance of packing systems used in rising stem valves for fugitive emissions control. Specifically, API 622 provides guidance on the design and testing of valve packing systems to reduce fugitive emissions from valves used in volatile organic compound (VOC) and hazardous air pollutant (HAP) service. The standard specifies the minimum performance requirements for the valve packing, such as maximum allowable leakage rates, as well as the test procedures to be used for evaluating the performance of the packing system. API 622 is intended to provide a consistent and reliable approach for controlling fugitive emissions from valves, which is an important aspect of environmental and safety management in the oil and gas industry. Testing API 622 specifies several test procedures to evaluate ...

  How to Simply Seal the Door of an Industrial Oven with a Tadpole Tape Gasket ? By: Jocelyn Vachon  VP Innovation Group - Robco There are a variety of types of industrial ovens with various door geometries. To seal the heat (radiation, convection, conduction) inside the oven, a flexible gasket is often required. Some ovens incorporate a groove to place an insulating rope. Also, strips or extrusions made of polymers from silicone or fluorocarbon can operate at relatively high temperatures. The most viable option, however, is a tadpole tape gasket. But, what is a tadpole tape gasket? What are the materials used ? A tadpole tape gasket consists of mineral-based textile materials (fiberglass, silica, ceramic) made into a seal starting with a core made of an insulating rope, surrounded by a sown fabric, the ends of which are allowed to extend (see graphic). A wire mesh can be added to the surface, to protect the fabric from excessive wear. Alternatively, a core of knitted metal wi...

  Comment sceller simplement la porte d’un four industriel avec un joint à bourrelet (tadpole) Par: Jocelyn Vachon VP Groupe Innovation - Robco Il existe une panoplie de types de fours industriels avec des géométries diverses au niveau des portes. Pour sceller la chaleur (radiation, convection, conduction) à l’intérieur du four, un joint flexible est souvent nécessaire. Certains fours intègrent une encavure pour y placer une corde isolante. Aussi, des bandes ou extrusions en polymères de type silicone ou fluorocarbure peuvent opérer à des températures relativement élevées. L’option la plus viable demeure cependant un joint à bourrelet. Mais, qu’est-ce qu’un joint à bourrelet ?   Quels sont les matériaux utilisés ?  Souvent connu sous son nom anglophone de tadpole tape , le joint à bourrelet consiste à fabriquer à partir de textiles à base minérale (fibres de verre, silice, céramique) un joint, débutant avec une âme faite d’une corde isolante , sur lequel on entoure et ...

Is there a rule of thumb to measure the proper amount of cooling water leakage , when using braided packing on rotary equipment (ex: pumps, agitators, mixers, etc.) ?  Jocelyn Vachon - VP B.Dev / Product Specialist In order for braided compression packing to seal and work properly on a dynamic equipment, water is injected through a flush line and distributed inside the stuffing box by a lantern ring. A small amount of this water will therefore leak out from the stuffing box.  The objective is twofold : A positive pressure of clean water has to be created inside the stuffing box, to prevent process fluid from entering the stuffing box To minimize frictional heat, by creating a hydrodynamic lubricating film between the stationary packing rings and the rotating shaft. This is a balancing act between how much compression is exerted on the packing rings set, to reduce to a minimum process fluid leakage versus limiting frictional heat. A...