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MeteringBellows SealedPackless Design

Swagelok SS-4BMRG-TW Metering Bellows Sealed Valve, 1/4 in. TSW x 3/8 in. TBW

Swagelok SS-4BMRG-TW stainless steel metering bellows sealed valve. Features gasketed seal, regulating stem tip, and 1/4 in. TSW x 3/8 in. TBW connections for leak-tight performance.

Swagelok SS-4BMRG-TW Metering Bellows Sealed Valve, 1/4 in. TSW x 3/8 in. TBW

Swagelok SS-4BMRG-TW Stainless Steel Metering Bellows Sealed Valve, Gasketed, Regulating Stem Tip, 1/4 in. TSW x 3/8 in. TBW.

Isolate system fluids and achieve reliable, leak-tight performance with Swagelok bellows valves, which use a packless design and a welded seal. Bellows valves are ideal for applications where the seal to atmosphere is critical, and we offer multiple options for general and high-purity service.

Specifications

SpecificationValue
Actuator TypeManual
Bellows Material321 Stainless Steel
Body Material316 Stainless Steel
Body SealGasket with metal seat
Cleaning ProcessStandard Cleaning and Packaging (SC-10)
Connection 1 Size1/4 in.
Connection 1 TypeTube Socket Weld
Connection 2 Size3/8 in.
Connection 2 TypeTube Butt Weld
CV Maximum0.3
Flow PatternStraight (2-way)
GasketSilver-Plated 316 SS Gasket
Handle ColorNot Applicable
Handle StyleSilver-mist Chrome-plated 313 SS
Maximum Temperature, F (°C)600 (315)
Max Temperature Pressure Rating600°F @ 300 PSIG / 315°C @ 20.6 BAR
Minimum Temperature, F (°C)-20 (-28)
Room Temperature Pressure Rating700 PSIG @ 100°F / 48.2 BAR @ 37°C
Service ClassGeneral
Stem Tip MaterialChrome Plated 316 Stainless Steel
Stem TypeRegulating
Surface FinishStandard
TestingHelium leak testing according to SCS-00020
eClass (4.1)37010201
eClass (5.1.4)37010201
eClass (6.0)37010201
eClass (6.1)37010201
eClass (10.1)37010201
UNSPSC (4.03)40141600
UNSPSC (10.0)40141609
UNSPSC (11.0501)40141609
UNSPSC (13.0601)40141609
UNSPSC (15.1)40141609
UNSPSC (17.1001)40183102

Safety and Compatibility

The complete catalog contents must be reviewed to ensure that the system designer and user make a safe product selection. When selecting products, the total system design must be considered to ensure safe, trouble-free performance. Function, material compatibility, adequate ratings, proper installation, operation, and maintenance are the responsibilities of the system designer and user.

Do not mix/interchange Swagelok products or components not governed by industrial design standards, including Swagelok tube fitting end connections, with those of other manufacturers.