Swagelok SS-16DKM4F4-2 is a 316 stainless steel integral bonnet needle valve designed for reliable isolation and flow control in compact systems. This straight pattern valve features a non-rotating stem with a soft-seat PCTFE tip, providing a maximum flow coefficient (Cv) of 0.53. A critical safety feature is the integrated 2850 psig (196 bar) rupture disc, which protects downstream equipment from overpressure conditions.

Straight Pattern, Non-Rotating Stem

Integral-bonnet needle valves are compact solutions available in a wide range of configurations. The non-rotating stem design minimizes seat wear and enhances seal longevity by preventing galling between the stem tip and the valve body seat. This model utilizes a soft-seat PCTFE stem tip for positive shutoff.

Technical Specifications

Specification	Value
Body Material	316 Stainless Steel
Maximum Cv	0.53
Connection 1	1/4 in. Male NPT
Connection 2	1/4 in. Female NPT
Rupture Disc	2850 psig (196 bar)
Max Temperature	200°F (93°C)
Min Temperature	-20°F (-28°C)
Pressure Rating at 200°F	2580 PSIG (177 BAR)
Stem Type	Soft-Seat PCTFE
Cleaning	Standard Cleaning (SC-10)

Safety Note

System design must be considered to ensure safe performance. The user is responsible for material compatibility, adequate pressure/temperature ratings, and proper installation. Do not mix Swagelok components with those from other manufacturers.