Large-bore fittings

Product / Chromatography

A convenient collection of nuts and ferrules for wider port designs and tubing diameters. The focus is on 5/16-24 and 1/2-20 flat-bottom ports and tubing outer diameters of 4.0 mm, 3/16", 1/4" and 5/16"; options come from the Flangeless™ and Super Flangeless™ families plus related barbed connectors.

Product group: Fittings and connectors
Brand: Biotech Fluidics

Manufacturer website

Source: manufacturer website (opens in a new tab) · Image: manufacturer website

Order codes and options

14 codes

Large-bore fittings order codes and properties
Code	Description (manufacturer)	Ports	Head type	Material	Pressure rating
P-136	Flangeless Nut for 1/16” OD tubing	5/16-24 Flat bottom	Standard Knurled	PEEK Natural	no value
P-141	Super Flangeless Nut for 1/16” OD tubing	5/16-24 Flat bottom	Standard Knurled	PEEK Natural	no value
P-130	Flangeless Nut for 1/8” OD tubing	5/16-24 Flat bottom	Standard Knurled	PEEK Natural	no value
P-131	Super Flangeless Nut for 1/8” OD tubing	5/16-24 Flat bottom	Standard Knurled	PEEK Natural	no value
P-132	Flangeless Nut for 3/16” OD tubing	5/16-24 Flat bottom	Standard Knurled	PEEK Natural	no value
P-137	Super Flangeless Nut for 3/16” OD tubing	5/16-24 Flat bottom	Standard Knurled	PEEK Black	no value
U-655	Flangeless Nut for 1/4” OD tubing	1/2-20 Flat bottom	Large Knurled	PEEK Black	no value
U-662	Flangeless Nut for 5/16” OD tubing	1/2-20 Flat bottom	Large Knurled	PEEK Black	no value
P-344	Flangeless Ferrule for 4.0 mm OD Tubing	5/16-24 Flat bottom	no value	ETFE Natural	250 psi (17 bar)
P-133	Flangeless Ferrule for 3/16” OD tubing	5/16-24 Flat bottom	no value	ETFE Blue	500 psi (34 bar)
P-133N	Flangeless Ferrule for 3/16” OD tubing	5/16-24 Flat bottom	no value	ETFE Natural	500 psi (34 bar)
P-140	Super Flangeless Ferrule for 3/16” OD tubing	5/16-24 Flat bottom	no value	ETFE Green	500 psi (34 bar)
U-650	Flangeless Ferrule for 1/4” OD tubing	1/2-20 Flat bottom	no value	ETFE Natural	250 psi (17 bar)
U-660	Flangeless Ferrule for 5/16” OD tubing	1/2-20 Flat bottom	no value	ETFE Natural	250 psi (17 bar)

Technical specifications

Large-bore fittings technical specifications
Port / thread	5/16-24 Flat bottom; 1/2-20 Flat bottom
Material	PEEK Natural; PEEK Black; ETFE Natural; ETFE Blue; ETFE Green
Pressure rating	250 psi (17 bar); 500 psi (34 bar)

Source: biotechfluidics.com (opens in a new tab) · Manufacturer (IDEX Health & Science) product information: Biotech Fluidics page and part number tables. Values come from the manufacturer and are confirmed at the quotation stage.