1-800-356-1688 or 1-814-353-1300
www.restek.com455
SAMPLE HANDLING |
GAS SAMPLING
Sample Cylinder Valves
Metering Control Valves
(Stainless Steel & Sulfinert®-Treated)
• Reduces pressure between sample cylinder and GC injector.
• Maintains fine metering control.
• Contains Kel-F® seat.
26326
*To order a sample cylinder valve with dip tube, please call Restek® Customer Service at 800-356-1688, ext. 3, or contact
your Restek® representative. Specify dip tube length or % outage when ordering (maximum length = 5.25"/ 13.3 cm).
Note: End of part will not be treated after cutting tube to length.
Sample Cylinder Valves
(Stainless Steel & Sulfinert®-Treated)
• Multiple valve configurations, including dip tube and rupture discs.
• Large, durable, Kel-F® seat ensures leak-free operation.
• Temperature range: –40 °C to 120 °C
• 303 stainless steel.
Alta-Robbins’ unique valve design incorporates a fully contained soft seat that pro-
vides durability and longer lifetime. Tight shut-off is easily achieved with very low
torque, yet the valve is rugged enough to withstand overtightening.
Multiple valve configurations are available for both high-pressure and ultra-high-pres-
sure sample cylinders. An outage tube or dip tube provides a headspace above liquefied
gases so that, should expansion occur with an increase in temperature, the pressure is
not dramatically increased. Outage is expressed as a percent of the total cylinder vol-
ume, based on the ratio of the length of headspace to the total length of the cylinder,
with a maximum available outage of 50%. The dip tube is welded directly to the male
inlet of the valve and cut to a length of up to 5.25 inches. Rupture discs function to
protect sample cylinders from over-pressurization by venting to the atmosphere. The
pressure rating on the rupture disc should always be lower than the cylinder.
Rupture Disc Tee
(Stainless Steel & Sulfinert®-Treated)
Unlike other designs, Alta-Robbins rupture disc tee is NOT permanently soldered to
the disc, making the discs replaceable. Discs are easily changed without removing the
valve or tee from the cylinder. These tees are designed to be installed into existing
systems to provide reliable over-pressure protection.
21400
26298
26300
21401
21402
26314
26318
26324
26323
Stainless Steel
Sulfinert-Treated
Description
cat.#
price
cat.#
price
3,500 psig (24,132 kPa) DOT Pressure Rating
1
/
4
" Male NPT x
1
/
4
" Male NPT
26297
21400
1
/
4
" Male NPT x
1
/
4
" Female NPT
26298
26299
1
/
4
" Male NPT x
1
/
4
" Male Compression
26300
21401
1
/
4
" Male NPT x
1
/
4
" Male NPT w/5.25" Dip Tube*
26301
21402*
1
/
4
" Male NPT x
1
/
4
" Male NPT w/1,800 psi (12,411 kPa) Rupture Disc
26302
26303
1
/
4
" Male NPT x
1
/
4
" Female NPT w/1,800 psi (12,411 kPa) Rupture Disc
26304
26305
Replacement Rupture Disc, 1,800 psig (12,411 kPa)
26320
—
5,000 psig (34,474 kPa) DOT Pressure Rating
1
/
4
" Male NPT x
1
/
4
" Male NPT
26306
26307
1
/
4
" Male NPT x
1
/
4
" Female NPT
26308
26309
1
/
4
" Male NPT x
1
/
4
" Male Compression
26310
26311
1
/
4
" Male NPT x
1
/
4
" Male NPT w/5.25" Dip Tube*
26312
26313
1
/
4
" Male NPT x
1
/
4
" Male NPT w/2,850 psi (19,650 kPa) Rupture Disc
26314
26315
1
/
4
" Male NPT x
1
/
4
" Female NPT w/2,850 psi (19,650 kPa) Rupture Disc
26316
26317
Replacement Rupture Disc, 2,850 psig (19,650 kPa)
26324
—
Stainless Steel
Sulfinert-Treated
Description
cat.#
price
cat.#
price
1,800 psig DOT Pressure Rating
Rupture Disc Tee,
1
/
4
" Male NPT x
1
/
4
" Female NPT
26318
26319
Replacement Rupture Disc
26320
—
2,850 psig DOT Pressure Rating
Rupture Disc Tee,
1
/
4
" Male NPT x
1
/
4
" Female NPT
26322
26323
Replacement Rupture Disc
26324
—
Stainless Steel
Sulfinert-Treated
Description
cat.#
price
cat.#
price
3,500 psig (24,132 kPa) DOT Pressure Rating
Metering Control Valve,
1
/
4
" Male NPT x
1
/
4
" Male NPT
26326
26327