The chemical transfer hose marketplace covers a variety of liquid conveyance applications. In some segments users feel that many chemical hoses are the same and provide the same functionality. Often these users fail to fully maximize the value of their chemical transfer hoses by matching them to the most appropriate uses.
When analyzing options for chemical transfers do not just evaluate the hose tube’s chemical compatibility to make a hose assembly selection. Chemical compatibility with the tube it is being transferred in is an extremely important check and one that can easily rule out potential options, but that approach can neglect major issues that will ultimately arise in the future.
There are several chemicals in the industrial chemical transfer marketplace that are compatible with a UHMWPE or Mod-XLPE hose tube, but are fully incompatible with stainless steels fittings that would otherwise comprise the hose assembly.
Composite hoses provide a higher value and more flexible option for certain chemical transfer needs. Advantages of composite hose compared to standard rubber chem hose depend on the exact chemical compound, state, pressure, temperature, and external factors of the media being transferred.
The ADS Outalarm from Dixon is a great tool to mitigate the risk of chemical spills while loading tank cars, tank trucks, and marine barges. ADS Outalarm is designed for liquid terminal operation on batch loading and overfill protection.
All chemical transfer hoses should be pressure tested before being installed and used in an operation. Hydrostatic testing can identify hose tube manufacturing issues or incorrect crimping between the fitting and chemical hose.
Locking chemical hose assemblies can significantly reduce the risk of accidental disconnection. Depending on specific application, a locking cam and groove configurations can help avoid costly chemical spills.
Avoid damaging or kinking a chemical hose by understanding a particular hose's bend radius and how the bend radius of a chemical hose relates to its flexibility.
PTFE or Teflon hoses and PTFE or Teflon encapsulated fittings provide the answer to some of the most complicated chemical transfer needs. These needs can include resistance to weathering, abrasion, high temperatures, highly corrosive media transfer as well as food, beverage, and pharmaceutical processing.
Specialty fittings for chemical transfer are used in situations where the application or type of media being transferred require specialized attention. Camlock fittings are the most common option for chemical hose assemblies, but there are a number of other options for special situations where a higher level of performance is necessary.
Hydrostatic testing of chemical hose assemblies should be completed only by a specialist with the correct testing systems. Please work with certified chemical hose suppliers to complete testing.
Chemical hose crimping is the process by which a chemically resistant hose tube and cover has a metal ferrule or sleeve compressed against it with a measured set of die pieces. This provide a full seal between the component parts of a chemical hose assembly.
Crimped hoses should be used in instances where chemical type, pressure, temperature, or environment are such that a leak or catastrophic failure would be a safety issue. Banded hoses are most appropriate for low pressure, moderate temperature, and non-corrosive fluid transfer.
Choosing the correct chemically resistant gasket for your chemical transfer hose assembly can significantly impact the full system's safety, durability, and working life. Viton gaskets and PTFE gaskets are some of the most popular for chemically resistant hose assemblies.
Chemical hose applications require extra consideration where higher temperatures are present. To ensure safety and success of the transfer, great care should be taken when choosing the components of a chemical transfer hose for higher temperature application.
Wear and tear resulting in hoses that kink, rupture or are damaged beyond repair can be detrimental to the efficiency of a chemical transfer program. Planning for use and handling can increase value and save time.
When turnaround time is the most important factor for a particular order, partnering with the right suppliers can help expedite a strong chemical transfer hose solution.
Having to replace chemical transfer hose more frequently than peers or suppliers can be an indication that the hose type and application are not matched correctly. A specialist can help establish the cause of a shorter working life of a chem hose.