Flowsys

 Double Ferrule Tube Fitting

 Flowsys manufactures double ferrule compression tube fittings for instrumentation & fluid transmission system to provide torque free & leak proof joints at all tubing connection & hence prevents costly and hazardous leaks in process & instrumentation tubing. Flowsys double ferrule tube fittings consist of four precision engineered components called the body, nut, front ferrule & back ferrule, all manufactured to very stringent tolerances under rigid quality control procedures. When installed affixed to tubing becomes a five-piece connection provide a solid leak proof joint by the sequential action of twin ferrule which is a combination of geometry & metallurgy.
Flowsys double ferrule tube fittings are easy to install & does not require any special tools. These fittings are used several times with no damage on tube and fittings. We summarize some of the silent feature below.

PErformance

Design

Tubing Selection

For better performance of Flowsys Fittings, the tubing should be reasonably round, free from scratches & draw lines, good surface finish & the ends should be free from burrs. The tubing should be compatible to process fluid, temperature & pressure. Fully annealed seamless tubing in accordance with ASTM A213 & ASTM A269 or equivalent with preferred hardness of 75-80 HRB are best suitable for use with Flowsys Tube Fittings.

Product Range & Technical Specification

Size

Fraction

1/8" Tube OD to 1.1/2" Tube OD

Metric

3mm Tube OD to 38mm Tube OD

Pressure

4000 psi to 10000 psi depends upon size (Please reffer size chart)

Temprature

Upto 648 Degree Celsius

End Connection

Available with NPT, BSPT, BSPP, SAE Pipe Threads or any other type upon request

Material

SS316/SS304

Inline

ASTM A276 / ASTM A479

Forging

ASTM A182

Carbon Steel

Inline

ASTM A108

Forging

ASTM A105 / 

ASTM A106


Also available in Brass, Monel, & Special Alloy in 

Fractional Seamless Stainless Steel Tubing

OD in.

Wall Thickness (in.)

0.012

0.014

0.016

0.02

0.028

0.035

0.049

0.065

0.083

0.095

0.109

0.12

0.134

0.156

0.188

1/16

6800

8100

9400

12000

1/8

8500

10900

3/16

5400

7000

10200

1/4

4000

5100

7500

10200

Working Pressure in psig

5/16

4000

5800

8000

3/8


3300

4800

6500

8600

1/2

2400

3500

4700

6200

5/8

2900

4000

5200

6000

3/4

2400

3300

4200

4900

5800

7/8

2000

2800

3600

4200

4800

1

2400

3100

3600

4200

4700

1.1/4

2400

2800

3300

3600

4100

4900

1.1/2

2300

2700

3000

3400

4000

4900

2

2000

2200

2500

2900

3600

Matric Seamless Stainless Steel Tubing

OD MM

Wall Thickness (mm)

0.8

1.0

1.2

1.5

1.8

2.0

2.2

2.5

2.8

3.0

3.5

4.0

4.5

3

710


6

330

420

520

670

8

310

380

490

10

240

300

380

12

200

240

310

380

430

Working Pressure In bar

14

180

220

280

340

390

430

15

170

200

260

320

360

400

16

190

240

300

330

370

18

170

210

260

290

320

370

20

150

190

230

260

290

330

380

22

130

170

210

230

260

300

340

25

180

200

230

260

300

320

28

180

200

230

260

280

330

30

170

190

210

240

260

310

32

160

170

200

230

240

290

330

38

140

170

190

200

240

280

310

50

150

180

210

240

 Weld Stainless Steel Tubing Allowable Working Pressure

To determine the working pressure of weld tubing to the requirements of ASME B31.3 Code, De-rating factors below must be applied.
For single weld tubing multiply by 0.80 & for double weld tubing multiply by 0.85.
Example: SS316 seamless 1/2″ O.D. x 0.065″ WT allowable working pressure: 4700 psi.
To determine the work pressure of the single weld tubing, multiply 4700 psi by 0.80. 4700 psig x 0.80=3760 psig at -20°F to 100°F (-28°C to 37°C)