Receiver Adapter, Straight Delivery

Quick Answer: A straight delivery receiver adapter is a straight glass fitting that extends the outlet of a condenser directly to the receiving vessel without any bend. It is used where the condenser already points downwards, such as vertical or steeply inclined condensers.

When No Bend Is Needed

A bend exists only to redirect a sloping condenser’s output into an upright receiver. When the condenser itself stands vertically, as a coil or double-surface condenser often does in a downward distillation, a bend would send the liquid sideways. The straight adapter simply continues the line, taking the condenser outlet at one end and delivering into a flask, cylinder or separating funnel directly underneath at the other.

Straight adapters also work as extensions. Added below a condenser, they lengthen the delivery so the tip reaches a receiver held lower down, or passes through the neck of a collecting vessel placed in a cooling bath. In recovery and water-distillation set-ups where the condenser descends steeply, the straight pattern keeps the path short and without low points where liquid can hang.

Details are not in the title: joint size, length and whether the lower end is a cone or a drip tube.

Care & Handling

• Mount a vertical condenser and straight adapter with the receiver clamped separately, so no weight hangs on the lower joint.
• Check that the straight path stays vertical; a leaning adapter directs drops onto the receiver neck instead of into it.
• Clean it by drawing a bottle brush straight through, which is easier than on bent patterns.

Specifications

Applications

• Downward distillation with a vertical coil or double-surface condenser
• Solvent recovery where distillate runs straight into a collection flask or separating funnel
• Extending a condenser outlet into a receiver sitting in a cooling bath
• Rebuilding compact stills where the condenser stands vertically above the receiver

Why Choose LabEquip

Solvent-recovery users and labs running vertical-condenser distillations order the straight adapter to complete their sets. LabEquip lists it in the chemistry lab equipment range together with the Graham coil condenser, which is often used upright; ask for joint sizes on the contact page.

Frequently Asked Questions

When should I use a straight delivery adapter instead of a bent one?

When the condenser is vertical or steeply inclined and the receiver stands directly below it. A bend is needed only when the condenser slopes and the receiver must stand upright.

Can a straight adapter be used as an extension piece?

Yes. Fitted below a condenser, it lengthens the delivery so the tip reaches a receiver placed lower down or sitting in a cooling bath.

Is a straight delivery adapter vented?

No side tube is named in the title. If the receiver is sealed to a ground joint, provide a vent elsewhere in the set, or use an adapter with a side tube.

Which condensers work vertically?

Coil condensers and double-surface condensers are commonly used upright because their cooling surfaces drain well in that position. A Liebig condenser can also be used vertically for downward distillation.

Does a straight adapter help avoid liquid hold-up?

Yes. With no bend or level section, the distillate has no low point in which to collect, so all of it reaches the receiver.

How do I stop drops missing the receiver?

Line the condenser and adapter up vertically against the stand rod, then raise the receiver until the tip is inside its neck.

Last Updated: September 2026