Pioneer range of double ferrule fittings work on the proven principle of two ferrules swaging to the tube when tightened. As the nut is tightened the front ferrule swages on to the tube making a prominent leak-proof seal and the back ferrule makes a positive impression on the tube with the help of back cone of front ferrule hence making a strong hold on the tube. Make and remake of the fittings is very much eased, as nuts are silver plated internally to prevent galling of threads. The identification between Metric and Inch fittings is made very simple with the help of stepped shoulders in metric fittings.
Material
The standard material that is used in making range of instrumentation fittings and tube fittings is SS316. These are also made in brass, Monel, Hastalloy, and Incoly as and when required by the customer. Various International Material Standards are used for conforming the chemical requirements of the raw material.
Typical raw material specifications head
Material
Bar
Forging
Stainless steel
BS970 316-S31
BS970 316-S31
DIN 4401
DIN 4401
ASME SA479-316
ASME SA182-316
Brass
BS2874 CZ121
BS2872 CZ 122
ASTMB 16 Alloy 360
ASTMB124 ALLOY 377
ASTMB 453 Alloy 345
Monel
BS3076 NA13
BS3076 NA13
ASTMB164
ASTMB164
High Duty Bronze
DGS 1043 Grade 2
DGS 1043 Grade 2
Hastelloy C276
ASTMB575
ASTNB574
Incoly 825
BS3076 NA16
BS3076 NA16
ASTMB425
ASTMB425
6Mo
UNS S31254
UNS S31254
ASTM A479
ASTM A479
Raw Material Reference
Tubing Selection
Proper selection, handling, installation of tubing in combination with range of instrumentation fittings and tube fittings are very much essential to ensure a perfect leak-proof joint. Selection of tubes is based on the material hardness, wall thickness and surface finish.
Tubing Selection Data (Metric/ Inch) for maximum working pressure Recommended maximum working pressures (bar) for 316 stainless steel and 6Mo tubes to ASTM A-269. (in inches)
Outside
Diameter
Of tube
(inch
Tube wall thickness (Swg/inch)
33/.010
30/.012
22/.028
20/.036
18/.048
16/.064
14/.080
12/.104
1/16
385
465
680
865
1/8
345
515
600
805
1/4
265
315
465
635
5/16
205
275
380
515
3/8
170s
205
275
380
480
1/21
155
205
275
380
450
5/8
120
170
240
310
380
3/4
105
140
195
245
300
7/8
85
120
170
225
240
1
The working pressures in the above table are based on actual tests on ASTM A-269 tubing with a safety factor of 4:1. They apply to a metal temperature range of -20°to + 100°C.
For working pressures of monel tubing, multiply the above ratings by 0.8.
Recommended maximum working pressures (bar) for 316 stainless steel and 6Mo tubes to ASTM A-269(in metric)
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Disclaimer : The information contained herein is accurate to the best knowledge and belief of Pioneer Enterprise, and specification quoted may change without prior notice. Information contained in this technical literature is believed to be accurate and is offered in good faith for the benefit of the customer. Click here to know more...
