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Bellows-sealed Valves

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Bellows-sealed Valves - 1

SW and SU Series Bellows-sealed Valves provide hermetic stem sealing via a metal bellows — the right choice for toxic, flammable, or otherwise hazardous media where even minimal leakage is unacceptable.

  • SW Series — working pressure up to 69 bar (1000 psig), temperature range −28°C to +450°C (−20°F to 842°F)
  • SU Series — working pressure up to 172 bar (2500 psig), two-stage sealing (bellows + upper packing), temperature range −28°C to +450°C (−20°F to 842°F)

Low-Temperature (Cryogenic) Option −LT
The SU Series is also available for cryogenic applications with a working range of −196°C to +204°C (−320°F to 400°F), featuring PTFE auxiliary packing. To order, add the -LT suffix to the valve ordering number, e.g. SUSS-FL4-5-LT or SUSS-ML12-5-LT.

Typical applications: liquid nitrogen (LIN, −196°C), liquid oxygen (LOX, −183°C), liquid argon (LAR, −186°C), and other cryogenic fluids used in laboratory and industrial processes (air separation, food freezing, semiconductor manufacturing, hydrogen technologies).

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316 SS, SU Bellows-sealed Valves, Two-stage Sealing of Bellows and Graphite Packing, 1/4" Tube Fitting, 2500psig(172bar), -28°C to 450°C, 0.16" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Seal
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IDSUSS-FL4-2
ID parker-
ID swagelok-
EAN8596694475009
316 SS, SU Series Bellows-sealed Valve, Two-stage Sealing of Bellows and Graphite Packing, 1/4" Tube Fitting, 2500psig(172bar), -20°F to 842°F(-28°C to 450°C), 0.16" Orifice, Stellite Spherical Stem Tip, Body- to-Bellows Gasketed Seal,90°C NC actuator, CE Certification
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IDSUSS-FL4-2-C-CE
ID parker-
ID swagelok-
EAN
316 SS, SU Series Bellows-sealed Valve, Two-stage Sealing of Bellows and Graphite Packing, 1/4" Tube Fitting, 2500psig(172bar), -20°F to 842°F(-28°C to 450°C), 0.16" Orifice, PCTFE Conical Stem Tip, Body-to- Bellows Gasketed Seal,90°C NC actuator, CE Certification
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IDSUSS-FL4-2-KN-C-CE
ID parker-
ID swagelok-
EAN
316 SS, SU Bellows-sealed Valve, 1/4" Tube Fitting, Orifice: 0.16", Stellite Spherical Stem Tip, Green Aluminum Bar, Body-to- Bellows Gasketed Seal, Low Temperature Sevice
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IDSUSS-FL4-2-LT
ID parker-
ID swagelok-
EAN
316SS, Bellows-sealed valve, 1/4" Tube OD, Orifice sizez: 4.3mm, Tip Type: Regulating
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IDSUSS-FL4-2-R
ID parker-
ID swagelok-
EAN8596694358036
316SS, Bellows-sealed valve, 1/4" Tube OD, Orifice sizez: 7.9mm, Handle: 321 stainless steel bar
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IDSUSS-FL4-5-M
ID parker-
ID swagelok-
EAN8596694389269
316 SS, SU Series Bellows-sealed Valves, Two-stage Sealing of Bellows and Graphite Packing, 3/8" Tube Fitting, 2500psig(172bar), -20°F to 842°F(-28°C to 450°C), 0.26" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Seal
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IDSUSS-FL6-3
ID parker-
ID swagelok-
EAN8596694474996
316 SS, SU Series Bellows-sealed Valve, 3/8" O.D. Tube Fitting, MWP: 172 bar, PTFE Packing, Temp.: -196 to 204°C, Orifice: 0.26"(6.6mm), Stellite Spherical Stem Tip, Green Aluminum Bar, Body-to-Bellows Gasketed Seat, Low Temperature Sevice
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IDSUSS-FL6-3-LT
ID parker-
ID swagelok-
EAN
SUSS-FL6-4
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IDSUSS-FL6-4
ID parker-
ID swagelok-
EAN8596694462108
316 SS, SU Series Bellows-sealed Valves, Two-stage Sealing of Bellows and Graphite Packing, 1/2" Tube Fitting, 2500psig(172bar), -20°F to 842°F(-28°C to 450°C), 0.30" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Sea
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IDSUSS-FL8-5
ID parker-
ID swagelok-
EAN8596694462115
316 SS, SU Series Bellows-sealed Valve, 1/2" FITOK Tube Fitting, 0.30" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Seal, Low Temperature Sevice -196*C
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IDSUSS-FL8-5-LT
ID parker-
ID swagelok-
EAN8596694506840
316 SS, SU Series Bellows-sealed Valves,1/2"Female BSPP( RP),0.30"Orifice,Stellite Spherical Stem Tip, Normally Closed Pneumatic Actuator,CE Certified
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IDSUSS-FRP8-5-C-CE
ID parker-
ID swagelok-
EAN
316 SS, SU Series Bellows-sealed Valves, Two-stage Sealing of Bellows and Graphite Packing, 12mm Tube Fitting, 2500psig(172bar), -20°F to 842°F(-28°C to 450°C), 0.28" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Seal
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IDSUSS-ML12-4
ID parker-
ID swagelok-
EAN
316 SS, SU Series Bellows-sealed Valve, 12MM FITOK Tube Fitting, 0.30" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Seal, Low Temperature Sevice -196*C
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IDSUSS-ML12-5-LT
ID parker-
ID swagelok-
EAN8596694517099
16 SS, SU Series, Two-stage Sealing of Bellows and Graphite Packing, 14mm Tube Fitting, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Seal
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IDSUSS-ML14-4
ID parker-
ID swagelok-
EAN8596694464843
316 SS, SU Series Bellows-sealed Valves, Two-stage Sealing of Bellows and Graphite Packing, 6mm Tube Fitting, 2500psig(172bar), -20°F to 842°F(-28°C to 450°C), 0.16" Orifice, Stellite Spherical Stem Tip, Bodyto-Bellows Gasketed Seal
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IDSUSS-ML6-2
ID parker-
ID swagelok-
EAN8596694418204
316 SS, SU Series Bellows-sealed Valves, Two-stage Sealing of Bellows and Graphite Packing, 6mm Tube Fitting, 1500psig(103bar), -196°C to 204°C, 0.16" Orifice, Stellite Spherical Stem Tip, Body-to-Bellows Gasketed Sea
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IDSUSS-ML6-2-LT
ID parker-
ID swagelok-
EAN
316SS, Bellows-sealed valve, 6mm Tube OD, Orifice sizez: 4.3mm, Tip Type: Regulating
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IDSUSS-ML6-2-R
ID parker-
ID swagelok-
EAN8596694400452
Body:316SS, MWP:2,500psig, Bellows:316L SS, Stem Tip:Stellited Spherical, Conn.:14mm x 14mm OD Tube Socket Weld, Green Al T-bar Handle
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IDSUSS-MTS14-5
ID parker-
ID swagelok-
EAN8596694430275
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/4 " Female FR ,Orifice Size 4.1mm
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IDSWSS-FFR4-2
ID parker-
ID swagelok-
EAN
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/4 " Female FR ,Orifice Size 4.1mm, FC-02 Cleaning and packing
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IDSWSS-FFR4-2-F2
ID parker-
ID swagelok-
EAN8596694272639
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/4 " Female FR ,Orifice Size 7.6mm
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IDSWSS-FFR4-5
ID parker-
ID swagelok-
EAN8596694383175
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/2 " Female FR ,Orifice Size 7.6mm
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IDSWSS-FFR8-5
ID parker-
ID swagelok-
EAN8596694358043
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/8 " FITOK ,Orifice Size 4.1mm
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IDSWSS-FL2-2
ID parker-
ID swagelokSS-2BG
EAN8596694421211
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/4 " FITOK ,Orifice Size 4.1mm
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IDSWSS-FL4-2
ID parker-
ID swagelokSS-4BG
EAN8596694272646
SW Series, 316SS Body, Conn.: 1/4" × 1/4" Tube OD, 2-Ferrule, Orifice: 4.1mm, PCTFE Conical Stem Tip, F2 Cleaned
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IDSWSS-FL4-2-KN-F2
ID parker-
ID swagelok-
EAN
Body:316SS, MWP:1,000psig, Bellows:316L, Stem Tip:SS Regulating Type, Conn.:1/4in. x 1/4in. Tube OD, 2-Ferrule, Orifice:4.1mm, Cv:0.36, Black nylon Knob
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IDSWSS-FL4-2-R
ID parker-
ID swagelokSS-4BG
EAN8596694466045
Body:316SS, MWP:1,000psig, Bellows:316L, Stem Tip:SS Regulating Type, Conn.:1/4in. x 1/4in. Tube OD, 2-Ferrule, Orifice:4.1mm, Cv:0.36, Black nylon Knob
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IDSWSS-FL4-2-R-O
ID parker-
ID swagelokSS-4BG
EAN8596694466038
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/4 " FITOK ,Orifice Size 7.6mm
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IDSWSS-FL4-5
ID parker-
ID swagelok-
EAN8596694389276
316 SS Bellows-sealed Valve SW Series,Connection Type and Size 3/8 " FITOK ,Orifice Size 6.6mm
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IDSWSS-FL6-3
ID parker-
ID swagelokSS-6BG
EAN8596694383182
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/2 " FITOK ,Orifice Size 7.6mm
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IDSWSS-FL8-5
ID parker-
ID swagelokSS-8BG
EAN8596694272653
316 SS, SW Series Bellows-sealed Valves, 1/4" Male FR Fitting, 1000psig(69bar), -20°F to 842°F(-28°C to 450°C), 0.16" Orifice, Stellite Spherical Stem Tip, Body- to-Bellows Gasketed Seal
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IDSWSS-FR4-2
ID parker-
ID swagelok-
EAN
316 SS, SW Series Bellows-sealed Valves, 1/4" Male FR Fitting, 1000psig(69bar), -20°F to 842°F(-28°C to 450°C), 0.16" Orifice, Stellite Spherical Stem Tip, Body- to-Bellows Gasketed Seal, FC-02
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IDSWSS-FR4-2-F2
ID parker-
ID swagelok-
EAN
Body:316SS, MWP:1,000psig, Bellows:316L SS, Stem Tip: Stainless Steel Regulating, Conn.:1/4in. × 1/4in. Male FR Fitting, Orifice:4.1mm, Cv:0.36, Black Nylon
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IDSWSS-FR4-2-R-O
ID parker-
ID swagelokSS-4BG VCR
EAN8596694466953
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/4 " Male FR ,Orifice Size 4.1mm
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IDSWSS-MFR4-2
ID parker-
ID swagelok-
EAN8596694358050
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/2 " Male FR ,Orifice Size 7.6mm
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IDSWSS-MFR8-5
ID parker-
ID swagelok-
EAN8596694358067
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 10mm FITOK ,Orifice Size 7.1mm
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IDSWSS-ML10-4
ID parker-
ID swagelok-
EAN8596694358074
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 12mm FITOK ,Orifice Size 7.6mm
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IDSWSS-ML12-5
ID parker-
ID swagelokSS-12BG-MM
EAN8596694272660
316SS， 12mm Tube OD, Orifice: 0.3"(7.6mm), Tip Material: Stellite
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IDSWSS-ML12-5-W
ID parker-
ID swagelok-
EAN8596694358081
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 14mm FITOK ,Orifice Size 6.6mm
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IDSWSS-ML14-3
ID parker-
ID swagelok-
EAN8596694383199
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 14mm FITOK ,Orifice Size 10mm
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IDSWSS-ML14-6
ID parker-
ID swagelok-
EAN8596694383205
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 6mm FITOK ,Orifice Size 4.1mm
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IDSWSS-ML6-2
ID parker-
ID swagelokSS-6BG-MM
EAN8596694272677
316 SS, SW Series Bellows-sealed Valve, 6mm Tube Fitting, 145 psig(10bar), -18°F to 200°F(-28°C to 93°C), 0.16" Orifice, PCTFE Conical Stem Tip, Body- to-Bellows Gasketed Seal,Normally Closed Pneumatic Actuator, CE Certifiied
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IDSWSS-ML6-2-KN-C-CE
ID parker-
ID swagelok-
EAN
316 SS, SW Series Bellows-sealed Valve, 6mm Tube Fitting, 145 psig(10bar), -18°F to 200°F(-28°C to 93°C), 0.16" Orifice, PCTFE Conical Stem Tip, Body-to-Bellows Gasketed Seal, Normally Closed Pneumatic Actuator, FITOK FC-02
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IDSWSS-ML6-2-KN-C-F2
ID parker-
ID swagelokSS-6BG-MM
EAN
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 6mm FITOK ,Orifice Size 4.1mm, Tip Type - Regulating
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IDSWSS-ML6-2-R
ID parker-
ID swagelok-
EAN8596694391033
316SS, 6mmTube OD, Orifice size: 4.1mm, Tip Material: Stellite
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IDSWSS-ML6-2-W
ID parker-
ID swagelok-
EAN8596694358098
316SS, 6mm Tube OD, Orifice size: 4.1mm, Tip Material: Stellite，Black Handle
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IDSWSS-ML6-2-W-B
ID parker-
ID swagelok-
EAN8596694358104
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 8mm FITOK ,Orifice Size 4,1mm
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IDSWSS-ML8-2
ID parker-
ID swagelok-
EAN8596694383212
SWSS-MTB14-3
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IDSWSS-MTB14-3
ID parker-
ID swagelok-
EAN8596694462122
SWSS-MTB14-6
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IDSWSS-MTB14-6
ID parker-
ID swagelok-
EAN8596694462139
316 SS Bellows sealed valve, 3.1. certification, 14mm O.D. but welded
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IDSWSS-MTS14-3
ID parker-
ID swagelok-
EAN8596694383229
SWSS-MTS25-7
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IDSWSS-MTS25-7
ID parker-
ID swagelok-
EAN8596694462146
Body:316SS, MWP:1,000psig, Bellows:316L SS, Stem Tip: Stainless Steel Regulating, Conn.:but weld 1/4in, Orifice:4.1mm, Cv:0.36, Black Nylon
Show
IDSWSS-TB4-2-R-O
ID parker-
ID swagelokSS-4BG
EAN8596694469688
316 SS Bellows-sealed Valve SW Series,Connection Type and Size 1/4 " Tube Socket Weld ,Orifice Size 4.1mm
Show
IDSWSS-TS4-2
ID parker-
ID swagelok-
EAN8596694383267
316 SS Bellows-sealed Valve SW Series,Connection Type and Size 1/4 " Tube Socket Weld ,Orifice Size 4.1mm , reg.type
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IDSWSS-TS4-2-R
ID parker-
ID swagelok-
EAN8596694466922
316 SS Bellows-sealed Valve SW Series,Connection Type and Size 3/8 " Tube Socket Weld ,Orifice Size 7.1mm
Show
IDSWSS-TS6-4
ID parker-
ID swagelok-
EAN8596694383274
316 SS Bellows-sealed Valve SW Seriess,Connection Type and Size 1/2 " Tube Socket Weld ,Orifice Size 7.6mm
Show
IDSWSS-TS8-5
ID parker-
ID swagelok-
EAN8596694272684

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