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ASME BPE Fittings


Alchem Process Ltd offer the full range of ASME BPE Bioprocessing Fittings in both SF1 and SF4 surface finishes. The standard provides a good manufacturing guide to the common installation problems and offers solutions and examples of what is considered to be acceptable and unacceptable for the design of modern Bio-Pharmaceutical installations.

The standard also covers process vessel design, pump and valve selection and also installation.

The DT fittings are designed for orbital and automatic welding procedures and include, clamp ferrules, bends, tees, reducers, instrument tees and end caps. The DT fittings are offered in accordance with the range listed in the current 2022 standard, although for continuity we have chosen to keep to the original DT references specified in the original BPE standard, namely DT-7 to DT-31 as the industry is already familiar with these items.

Standard DT fittings and tube are offered to SF1 surface finish at 0.51µM Ra Max as standard with SF4 (0.38µM Ra Max) being available on special order.

The welding tangents of all DT the fittings have a controlled sulphur content of between 0.005 and 0.017%. This range is meant to balance with the sulphur content usually found in tube and should leads to a more even welding process.  Material certification is offered to EN10204 3.1 for all fittings and tube supplied to ASME BPE.


A range of Diaphragm Valve, Sample Valves, Radial Seat Tank Bottom Valves, Butterfly Valves, Non-Return Valves, Ball Valves and Piston Valves are also available to match the surface finishes offered in the standard.

Features & options:

Surface finish   –           SF-1 (0.5µM Ra Max) & SF-4 (0.38µM Ra Max)

Sizes                   –           ¼” to 6” with specials sizes made to order

Fittings              –           Bends, Tees, Reducers and End Caps

Sulphur             –           Controlled sulphur range between 0.005 to 0.017%

Adaptors           –           Adaptors available for special instrument pump applications

Gaskets             –           FDA 177.2600 & 177.1550, USP Class V1, 3A and CE 1935/2004

Metric                –           Orbital weld fittings available to DIN32676 & DIN11865 

Related Standards:

DIN32676 Table A, B and C, Clamp Ferrules
DIN11866 and DIN11865, Tube and Orbital Weld Fittings
DIN11864 and DIN11853 -1 / 2 / 3 Table A Fittings
FDA 177.2600 and 177.1550 Clamp Gaskets
3A standard 18-03 class 111 Clamp Gaskets
USP Class V1 section 88 with section 87 available to order
EN102043.1 Material Certification 


316L SS 1.4404 and 1.4435 (low sulphur BN-2)
Alloy400, C22 & C276
Duplex alloys UNS32750, 32760 & SAF 2205 and 2507
6Mo products and 904L, 254SMO and AL6-XN

Titanium and Aluminium

Polymer & Plastics such as ABS, Delrin, Polypropylene and Nylon



Where the environment is deemed aggressive to either the seal or the pipework system, please provide details of the product media and operating conditions the pressure and temperature conditions. Our technical staff will assist you with the selection of the most appropriate material for your particular application. 

Related Products:

Clamp Ferrules, Blanks and Adaptors
Diaphragm Valves
Aseptic Sample Valves
Radial Seat Tank Bottom Valves
Non-Return Valves

Butterfly Valves
Ball Valves

Mag Mixers, Manways and Heat Exchangers




Download Data Sheet in PDF Format:

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Alchem Process Ltd supply engineering solutions to the hygienic and sanitary process industries; including pharmaceutical, biotech, cosmetic, food, dairy, and beverage.

Alchem Process Ltd supply engineering solutions

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