Genuine Swagelok SS-DLTW4 high-purity, high-pressure diaphragm-sealed valve from the DL Series.

Two identical valves are available. The advertised price is for one valve.

Each valve remains sealed inside its original Swagelok SC-11 factory bag and retains its protective port caps. The outer boxes have been opened for visual inspection, but the individual clean-process packages have not been opened.

Manufacturer specifications

• Manufacturer part number: SS-DLTW4

• DL Series diaphragm-sealed valve

• 1/4 in. tube socket weld × 3/8 in. tube butt weld connections

• Manual lever operation — quarter-turn from fully open to closed

• Maximum flow coefficient: Cv 0.14

• Maximum working pressure: 3500 psig (241 bar) at 20°C

• Temperature range: −73°C to 121°C

• 316/316L stainless-steel construction of principal wetted components

• SC-11 Special Cleaning and Packaging

• Wetted-surface finish: 20 µin (0.51 µm) Ra average, machine finished

Condition and testing

These are unused old-stock components recovered from a decommissioned laboratory facility. They have no known installation or service history.

BenchSpec has deliberately not opened the SC-11 bags or independently pressure-tested the valves in order to preserve the original clean packaging.

The exact manufacturer part number shown on the original Swagelok packaging is SS-DLTW4.

Each purchase includes one sealed valve and its corresponding original Swagelok box. Photographs show the actual available stock.