BS ISO 2861:2020 pdf free.Vacuum technology – Dimensions of clamped-type quick-release couplings.
BS ISO 2861 This document specifies the dimensions of the clamped-type quick-release couplings used in vacuum technology, as well as those of the O-rings and their carriers associated with these couplings, used to ensure vacuum tightness. NOTE The dimensions retained for the coupling diameter ensure the compatibility of the quick-release coupling with the corresponding vacuum flanges specified in ISO 1609[1].There are no normative references in this document.For the purposes of this document, the following terms and definitions apply.
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一 IEC Electropedia: available at http://www.electropedia.org/ Dimensions of couplings shall be in accordance with Table 1. See Figure 2. The selection of the material shall be compatible with the requirements for the couplings. Considerations may include service temperature, sealing capacity, corrosion-resistance, magnetic permeability, the type of seal gasket (0-ring) used and dimensions. NOTE Austenitic stainless steel is commonly used, but it is not the intent of this document to specify or limit the choice of coupling material to austenitic stainless steel. Dimensions of 0-rings shall be in accordance with Table 2. See Figure 3. The 0-ring shall be of elastomer. The selection of the elastomer shall be compatible with the requirements for the couplings. Considerations may include service temperature, sealing capacity, corrosion-resistance and dimensions.NOTE Fluorocarbon rubber is commonly used, but it is not the intent of this document to specify or limit the choice of 0-ring material to rubber.Dimensions of 0-ring carriers shall be in accordance with Table 3. See Figure 4.The selection of the 0-ring carrier shall be compatible with the requirements for the couplings. Considerations may include service temperature, sealing capacity, corrosion-resistance, magnetic permeability, the type of seal gasket [O-ring) used and dimensions.NOTE Austenitic stainless steel is commonly used, but it is not the intent of this document to specify or limit the choice of 0-ring carrier material to austenitic stainless steel.BS ISO 2861 pdf download.