Port Cap Manifold, 38-430 Nalgene, 10-Port, size L (4 x 1/4" NPT, 6 x 1/4-28)

Port Cap Manifold, 38-430 Nalgene, 10-Port, size L (4 x 1/4" NPT, 6 x 1/4-28)

In most regards the 38-430 plastic bottle thread is identical to the GL38 glass version, with the noted difference that a small shoulder has been introduced to the mouth of the plastic bottle which raises the required depth of the cap. This inconvenient change means that the GL38 safety caps offered in the previous pages are too shallow to engage and seal on a plastic 38-430 threaded bottle.

The most common 38-430 plastic bottles are from the Nalgene® brand, although several other manufacturers make bottles with similar finishes which seem to follow the same standard.

Although practically all the bottle caps provided here could be used for either solvent extraction or waste collection, the difference in function lies in how ventilation is handled.

During solvent extraction, air must enter the bottle to displace solvent removed - a problem resolved with a oneway check valve. The removeable valve is constructed of inert PTFE components with stainless spring, compatible with most laboratory solvents, with a low opening pressure below 1psi to avoid pump cavitation.

Tubing is secured to threaded ports (“Type A” 1/4-28) in inert PTFE inserts.The insert rotates independently from the Polypropylene cap collar - a feature which prevents twisted tubing when the cap is removed. The tubing connections provided are for 1/8” (3.2mm) OD tubing.

This port manifold cap is designed to fit quick disconnect cans and has 10 ports

• Includes (6) Type A port and (4) Type D ports
• Manifold is a wetted component and made from Polypropylene
• Smallest hole (Type A) accepts 1/4-28 UNF tubing adapters (sold separately)
• Largest hole (Type D) accepts 1/4” NPT tubing adapters (sold separately)