Swagelok SS-HBV51-C is a stainless steel high pressure bellows sealed valve featuring a 1/4 in. female Swagelok VCR face seal fitting and a normally closed (NC) pneumatic actuator. Designed for straight pattern flow, this valve utilizes a packless design and a welded seal to isolate system fluids and achieve reliable, leak-tight performance.

Bellows valves are ideal for applications where the seal to atmosphere is critical. The SS-HBV51-C offers a maximum room temperature pressure rating of 3500 PSIG at 100°F (241 BAR at 37°C) and is subjected to helium leak testing according to SCS-00020 to ensure high-purity service integrity.

WARNING

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.

Specifications

Specification	Value
Actuator Model	HB Series Actuator
Actuator Operation Mode	Normally Closed Spring Return
Actuator Type	Pneumatic
Bellows Material	316L Stainless Steel
Body Material	316L Stainless Steel
Body Seal	None
Cleaning Process	Special Cleaning and Packaging (SC-11)
Connection 1 Size	1/4 in.
Connection 1 Type	Face Seal (Metal Gasket) Female VCR
Connection 2 Size	1/4 in.
Connection 2 Type	Face Seal (Metal Gasket) Female VCR
CV Maximum	0.3
Flow Pattern	Straight (2-way)
Gasket	PTFE-Coated 316L Gasket
Maximum Temperature	150°F (65°C)
Max Temperature Pressure Rating	150°F @ 3220 PSIG / 65°C @ 221 BAR
Minimum Temperature	-40°F (-40°C)
Room Temperature Pressure Rating	3500 PSIG @ 100°F / 241 BAR @ 37°C
Service Class	General
Stem Tip Material	PCTFE
Stem Type	Conical
Surface Finish	Ra 20 μin
Testing	Helium 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