BS ISO 2861:2013 pdf free
BS ISO 2861:2013 pdf free.Vacuum technology一Dimensions of clamped-type quick-release couplings
BS ISO 2861 specifies the dimensions of the clamped-type quick-release couplings used in vacuum technology, as well as those of the 0-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]
For the purposes of this document, the following terms and definitions apply.
connection which may be joined or separated without the use of tools[SOURCE: ISO 14617-3:2002, 3.15, modified一”clamped-type” has been added to the term; Notes 1 to 3 are additional to the original definition.]
Note 1 to entry: Ensures vacuum tightness associated with the O-rings and their carriers.
Note 2 to entry: The types and dimensions ofclamps to tight couplings are not specified in this International Standard.
Note 3 to entry: See Figure 1.
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 (O-ring) used and dimensions.
NOTE Austenitic stainless steel is commonly used, but it is not the intent of this Standard 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 International Standard 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 (0-ring) used and dimensions.
NOTE Austenitic stainless steel is commonly used, but it is not the intent of this International Standard to specify or limit the choice of 0-ring carrier material to austenitic stainless steel.BS ISO 2861 pdf download.
