Swagelok B-18RF8 is a brass integral-bonnet needle valve featuring a straight pattern and a regulating stem. These compact needle valves are designed for a variety of applications, offering a maximum flow coefficient (Cv) of 1.80 and utilizing 1/2 in. female NPT connections for both the inlet and outlet.

WARNING

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.

Specifications

Specification	Value
Body Material	Brass
Cleaning Process	Standard Cleaning and Packaging (SC-10)
Connection 1 Size	1/2 in.
Connection 1 Type	Female NPT
Connection 2 Size	1/2 in.
Connection 2 Type	Female NPT
CV Maximum	1.8
Low Emissions Certified	Yes
Maximum Temperature, °F (°C)	400 (204)
Max Temperature Pressure Rating	400°F @ 390 PSIG / 204°C @ 26 BAR
Minimum Temperature, °F (°C)	-65 (-53)
Stem Type	Regulating
eClass (4.1)	37010203
eClass (5.1.4)	37010201
eClass (6.0)	37010203
eClass (6.1)	37010203
eClass (10.1)	37010203
UNSPSC (4.03)	40141602
UNSPSC (10.0)	40141602
UNSPSC (11.0501)	40141602
UNSPSC (13.0601)	40141602
UNSPSC (15.1)	40141602
UNSPSC (17.1001)	40183102