Robco Expert

  HOW TO WRAP PIPE WITH HIGH TEMPERATURE TAPE by: RedOps / Robco Rule of thumb is wrapping the tape for the first turn around, then start the second wrapping halfway over the first and continue this pattern for the entire tape wrapping of the pipe length.   This will create a double wrapping of the pipe and this is the best practice for protection. Just as you would do on a hockey stick!

OVER GREASING KILLS BEARINGS  by: Red Ops / Robco ·      Overfilling bearings with grease is the most common cause of bearing failures. ·      Too much grease in the cavity/bearing will cause more friction to run the bearing and that will result in an increased temperature to levels above the drop point of the grease: oxidation will occur and both the grease and bearing will prematurely fail! ·      Follow the instructions of the bearing manufacturer for greasing quantities as per bearing type and size. ·      Take into consideration the environment, temperature and operating hours.   OVER GREASED BEARINGS PROPERLY GREASED BEARINGS

Both strong with low water absorption and good electrical insulation.  FR-4 (or FR4) is a NEMA grade designation for glass-reinforced epoxy laminate material. FR-4 is a composite material composed of woven fiberglass cloth with an epoxy resin binder that is flame resistant (self-extinguishing). "FR" stands for flame retardant, and does not denote that the material complies with the standard UL94V-0 unless testing is performed to UL 94, Vertical Flame testing in Section 8 at a compliant lab. The designation FR-4 was created by NEMA in 1968. FR-4 glass epoxy is a popular and versatile high-pressure thermoset plastic laminate grade with good strength to weight ratios. With near zero water absorption, FR-4 is most commonly used as an electrical insulator possessing considerable mechanical strength. The material is known to retain its high mechanical values and electrical insulating qualities in both dry and humid conditions.  Meets MIL-I-24768/27. G-10 is a high-pressure fibr...

  What does “K” factor mean for Insulation? Thomas Cipriani – Product Specialist at Robco The K factor expresses the amount of heat transferred by a chosen material at a specific temperature. The higher the temperature, the higher the amount of heat is transferred. To determine the K Factor, we use the Thermal Conductivity rating of the material or ability to conduct heat. Usually, insulation materials have a K Factor of less than one. The lower the K factor, the better the insulation. HOT face / COLD face: Exposed side / absorbed heat. When we know the temperature of exposure and the Thermal Conductivity of the material we can determine the temperature on the outside of the insulation that will be exposed. _____________________________________________________________________ Que signifie le facteur « K » pour l'isolation ? Thomas Cipriani - Spécialiste produit chez Robco Le facteur K exprime la quantité de chaleur transférée par un matériau choisi à une...

Lotfi Grine, Eng. – Product Specialist at Robco   Causes for bolts to loosen in service: ·         Vibration: it’s an unintentional loosening, and it is the repeated relative displacements between the contact surfaces resulting in relative motion occurring in the threads. ·         Gasket creep: the gasket loses its springiness over time; it is also a permanent deformation and It’s more severe in high-temperature applications. ·          Elastic interactions between multiple bolts: Elastic interactions can either increase or decrease bolt preload. ·         Temperature fluctuation caused as a result of either differences in temperature or differences in clamped materials. ·          Low preload developed at installation: it occurs when there is no sufficient clamp force (under-tightened bolt) present on the joint interface to prevent relative motion...

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...

Whenever Biosoluble wool insulation is an option for your application, go for it. There are many reasons why. Here are the main 8 benefits of Biosoluble Fibre. Text & photo: Jean Melançon - Robco 1. Excellent thermal insulation properties  A Biosoluble needled blanket shows comparable heat loss than a ceramic blanket of the same thickness. 2. No binder The needling process doesn’t require any binder nor transfer lubricant onto the fibers. 3. Good thermal stability Thermal stability is good for a vast array of applications. 4. Low thermal accumulation It offers a low heat storage index and most Biosoluble fibers demonstrate a low shot content. 5. Excellent resistance to most corrosive substances Very good resistance to various chemicals (except phosphoric and hydrofluoric acids and concentrated bases and solvents) 6. Very good flexibility and resilience Very flexible and malleable it allows easy handling and installation and has good resilience to compression. It can be die-cut ...