Vacuum Manifolds

J. Young greaseless valves and the inert atmosphere control your synthesis needs, without paying premium-brand prices for the privilege.

Greaseless J. Young PTFE valves

Single and dual bank configurations

3 to 8 ports to match your bench

A lower-cost route to a Schlenk line

A vacuum manifold is the backbone of any air-free workflow. It lets you switch a flask between vacuum and inert gas without breaking the seal, so moisture- and oxygen-sensitive reactions stay protected from setup to workup. Our range covers single bank manifolds for straightforward evacuation and backfilling, dual bank Schlenk lines for simultaneous vacuum and inert gas control, and space-saving and offset designs for crowded fume hoods. Every model is built with J. Young high vacuum PTFE valves, so you get a reliable, greaseless seal you can rebuild instead of replace

Models suitable for…

Air-sensitive synthesis

Organometallic and catalysis work

Inert atmosphere sample drying

Teaching air-free technique

Vacuum manifold options at a glance

Model	Configuration	Valve or stopcock	Ports	Price from
Space saving manifold	Single bank, compact	J. Young PTFE, 0-10mm	3 / 5 / 8	$595
Single bank manifold	Single bank	J. Young PTFE, 0-10mm	3 / 4 / 5	$668
Single bank with vacuum gauge port	Single bank	J. Young PTFE, 0-10mm	3 / 4 / 5	$822
Dual bank manifold	Dual bank (vacuum + inert gas)	J. Young PTFE, 0-10mm	3 / 4 / 5	$1,358
Dual bank offset manifold	Dual bank, front-control offset	J. Young PTFE, 10mm	3 / 4 / 5	$1,364
Dual bank with glass stopcocks	Dual bank	Glass stopcocks, 4mm	3 / 4 / 5	$1,751

A High Performance (HP) valve upgrade is available across the PTFE-valve models for more demanding applications. Every manifold usually ships in about two weeks.

What vacuum manifold info can you find on this page?

What a vacuum manifold does, and where it fits in air-free work.
Single bank vs dual bank: which configuration you need.
Why J. Young greaseless valves matter for your seal.
Where these vacuum manifolds get used.
How to choose the right vacuum manifold model.
How these compare to Chemglass, Sigma-Aldrich, and other glassware brands.
What drives vacuum manifold pricing.
Vacuum manifold and Schlenk line FAQs.

What a vacuum manifold actually does

A vacuum manifold (also called a vacuum gas manifold or, in its dual bank form, a Schlenk line) is a horizontal glass tube fitted with a row of valved ports. Each port connects to a flask or vessel. The manifold lets you apply vacuum to evacuate a vessel, then backfill it with nitrogen or argon, repeating the cycle until the atmosphere inside is clean.

That single capability is what makes air-free chemistry possible. Reagents that ignite, decompose, or quietly degrade on contact with air or water can be handled safely because they never see either one.

What you can run on a manifold

Evacuate and backfill. Cycle a flask between vacuum and inert gas to remove air and moisture before a reaction.
Hold an inert atmosphere. Keep a reaction under positive nitrogen or argon pressure for its full duration.
Dry samples. Pull residual solvent off a sample after it comes off the rotary evaporator.
Run several vessels at once. With multiple ports, you can manage parallel reactions or transfers on one line.

Having more than one manifold on the bench helps with scheduling and gives you a backup when one line is tied up. It does not remove the need to keep each line and trap clean between jobs.

Single bank vs dual bank vacuum manifolds

The configuration you need comes down to how you want to handle vacuum and inert gas.

Single bank manifolds

A single bank manifold is one tube with one row of valves. You connect it to either a vacuum source or an inert gas source and switch the whole line between tasks. It's the right call for straightforward evacuation and backfilling, sample drying, and labs that don't need to hold vacuum and gas live at the same time. Our single bank range starts at $595 for the space-saving design.

Dual bank manifolds (Schlenk lines)

A dual bank manifold runs two parallel tubes: one on vacuum, one on inert gas. Each port's valve lets you select vacuum or gas for that vessel independently, without touching the rest of the line. This is the classic Schlenk line setup, and it's what you want for demanding air-sensitive synthesis where you're cycling multiple flasks through evacuate-and-backfill steps and need both services available at once.

A compact note on bench space

If fume hood space is tight, the space saving manifold fits more ports into less width. It carries up to 8 ports in a 13mm main tube at 420mm wide, against the standard 16mm tube. The dual bank offset design stacks its two banks with front-facing controls, so the valves stay reachable even in a shallow hood

Why J. Young greaseless valves matter

Every manifold in this range uses J. Young high vacuum PTFE valves rather than greased ground-glass stopcocks (the glass stopcock dual bank model being the one exception, for labs that specifically want them).

Greaseless valves matter for a few concrete reasons:

No grease migration. Stopcock grease can creep into your line and contaminate sensitive reactions. PTFE valves with O-ring seals don't introduce grease at all.
They hold vacuum reliably. A PTFE valve against an O-ring gives a consistent high-vacuum seal that doesn't depend on a fresh coat of grease.
You rebuild instead of replace. O-rings and PTFE spindles are serviceable parts. When a seal wears, you replace a component rather than the whole valve.

The High Performance (HP) valve option goes further, with a reinforced sealing area and improved interchangeability for labs running harder duty cycles. It's available in both fine and fast thread.

Where these vacuum manifolds get used

Air-sensitive and organometallic synthesis

Grignard reagents, organolithiums, metal complexes, and other reagents that won't survive contact with air or water are made and handled under the inert atmosphere a manifold provides.

Catalysis research

Air-free catalyst preparation and screening rely on evacuate-and-backfill cycling to keep oxygen and moisture out of the system..

Materials and polymer chemistry

Controlled-atmosphere polymerizations and air-sensitive material prep use the manifold to hold a clean inert environment for the length of the reaction.

Inert atmosphere sample drying

Samples coming off a rotary evaporator get their last traces of solvent pulled off under vacuum on the manifold.

Teaching and shared synthesis labs

Greaseless valves and serviceable seals make these manifolds practical for departments where many hands use the same line and grease contamination is a recurring headache.

How to choose the right vacuum manifold model

Choose your end connections and valves

1. Decide single bank or dual bank

If you need vacuum and inert gas available on the same line at the same time, you want a dual bank (Schlenk line) model. If you're evacuating and backfilling or drying samples and can switch the whole line between services, a single bank model does the job for less.

2. Count your ports

Ports run from 3 up to 8 depending on the model. Pick for the number of vessels you realistically run at once, plus a little headroom. More ports mean a wider manifold, so check your fume hood width.

3. Choose your end connections and valves

Single bank and standard dual bank models use serrated end connections for tubing. The glass stopcock and offset dual bank models use B19 socket ends for cone adapters. If you want a vacuum gauge on the line, the single bank gauge-port model has it built in, and the standard dual bank can take an NW16 flange for one.

Full specification comparison

Model	Banks	Valve / stopcock	Main tube OD	End connections	Ports	Width	Price from
Space saving	Single	J. Young PTFE, 0-10mm	13mm	Serrated	3 / 5 / 8	225-420mm	$595
Single bank	Single	J. Young PTFE, 0-10mm	16mm	Serrated	3 / 4 / 5	300-500mm	$668
Single bank, gauge port	Single	J. Young PTFE, 0-10mm	16mm	Serrated	3 / 4 / 5	300-500mm	$822
Dual bank	Dual	J. Young PTFE, 0-10mm	24mm	Serrated	3 / 4 / 5	300-500mm	$1,358
Dual bank offset	Dual	J. Young PTFE, 10mm (front control)	24mm	B19 socket	3 / 4 / 5	300-500mm	$1,364
Dual bank, glass stopcocks	Dual	Glass stopcocks, 4mm	24mm	B19 socket	3 / 4 / 5	300-500mm	$1,751

Full specification comparison

Model	Banks	Valve / stopcock	Main tube OD	End connections	Ports	Width	Price from
Space saving	Single	J. Young PTFE, 0-10mm	13mm	Serrated	3 / 5 / 8	225-420mm	$595
Single bank	Single	J. Young PTFE, 0-10mm	16mm	Serrated	3 / 4 / 5	300-500mm	$668
Single bank, gauge port	Single	J. Young PTFE, 0-10mm	16mm	Serrated	3 / 4 / 5	300-500mm	$822
Dual bank	Dual	J. Young PTFE, 0-10mm	24mm	Serrated	3 / 4 / 5	300-500mm	$1,358
Dual bank offset	Dual	J. Young PTFE, 10mm (front control)	24mm	B19 socket	3 / 4 / 5	300-500mm	$1,364
Dual bank, glass stopcocks	Dual	Glass stopcocks, 4mm	24mm	B19 socket	3 / 4 / 5	300-500mm	$1,751

How these compare to Chemglass, Sigma-Aldrich, and other brands

When you price a Schlenk line, you'll come across Chemglass Airfree, Sigma-Aldrich, and similar glassware lines. Here's where Scilogex fits.

The valve technology is the same idea

J. Young greaseless PTFE valves are the recognized standard for high-vacuum, contamination-free service. Our manifolds are built with them. You're not trading down on the part of the manifold that actually controls your atmosphere.

The cost structure is different.

Scilogex prices reliable, no-frills glassware below premium-branded lines. The budget you keep on the manifold goes to the rest of the bench: your glovebox consumables, your inert gas, your next instrument.

The serviceable design protects you long term.

Replaceable O-rings and PTFE spindles mean a worn seal is a cheap part, not a new manifold. That keeps your cost of ownership down over the years a manifold stays in service.

Where premium lines pull ahead is breadth of accessories and proprietary fittings. If your lab is standardized on a specific brand's adapter ecosystem, factor that in. For the manifold itself, the Scilogex range gives you the same air-free capability at a lower entry price.

What drives vacuum manifold pricing

A few factors explain the spread from $595 to $1,751 across this range.

Single vs dual bank

A dual bank manifold is effectively two manifolds joined as one, with twice the valving. That's the single biggest driver of price between our single bank and Schlenk line models.

Number of ports

More ports mean more valves and more glasswork. A 5-port manifold costs more than the 3-port version of the same model.

Valve grade

The standard J. Young PTFE valve covers most work. The High Performance (HP) upgrade adds a reinforced seal for harder duty cycles at additional cost.

Glass stopcocks vs PTFE valves

The glass stopcock dual bank model sits at the top of the range for labs that specifically want ground-glass stopcocks over PTFE valves.

Gauge ports and flanges

A built-in vacuum gauge port or an NW16 flange option adds capability, and a small amount to the price, versus the base model.

Adapters

The glass stopcock and offset models don't include cone adapters in the base price (see Jya/1 and Jya/2). Budget for those if your setup needs them.

Vacuum manifold and Schlenk line FAQs

What is a vacuum manifold used for?

A vacuum manifold lets you switch a flask between vacuum and inert gas without exposing its contents to air. That makes it the core tool for handling moisture- and oxygen-sensitive reagents, running air-free reactions, and drying samples under vacuum.

What's the difference between a vacuum manifold and a Schlenk line?

A Schlenk line is a specific type of vacuum manifold: a dual bank design with one tube on vacuum and one on inert gas, so you can select either service for any port. Single bank manifolds connect to one source at a time. Every dual bank manifold in this range is a Schlenk line.

Do I need single bank or dual bank?

Choose dual bank if you need vacuum and inert gas live on the same line at once, which is typical for air-sensitive synthesis. Choose single bank for evacuation and backfilling, sample drying, or any workflow where switching the whole line between services is fine

Why use greaseless J. Young valves instead of glass stopcocks?

Greaseless PTFE valves don't introduce stopcock grease into your line, which protects sensitive reactions from contamination. They also hold a consistent high-vacuum seal and use replaceable O-rings, so a worn seal is a serviceable part rather than a reason to replace the valve. We do offer a glass stopcock dual bank model for labs that prefer ground-glass stopcocks

How many ports should my manifold have?

Pick for the number of vessels you run at the same time, with a little headroom. Our manifolds range from 3 to 8 ports. Remember that more ports mean a wider manifold, so confirm it fits your fume hood

Can I add a vacuum gauge to the manifold?

Yes. The single bank gauge-port model has a vacuum gauge port built in. The standard dual bank manifold can take an NW16 flange to connect a gauge (look for the -NW16 product codes).

What are the manifolds connected to?

One bank connects to a vacuum pump, usually through a cold trap that keeps solvent vapors out of the pump. The inert gas bank connects to a nitrogen or argon supply, typically vented through an oil bubbler to maintain a slight positive pressure. The manifold is the control point between your vessels and those two services

What's the High Performance (HP) valve option?

The HP valve is an upgraded J. Young PTFE valve with a more robust design, a reinforced sealing area, and improved interchangeability, intended for more demanding applications. It's available in both fine and fast thread across the PTFE-valve models

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Vacuum Manifolds

J. Young greaseless valves and the inert atmosphere control your synthesis needs, without paying premium-brand prices for the privilege.

Greaseless J. Young PTFE valves

Single and dual bank configurations

3 to 8 ports to match your bench

A lower-cost route to a Schlenk line

Models suitable for…

Air-sensitive synthesis

Organometallic and catalysis work

Inert atmosphere sample drying

Teaching air-free technique

Vacuum Manifolds

J Young Single Bank Manifolds

J Young® Single Bank Manifolds (Vacuum Gauge Port)

J Young Space Saving Manifolds

J Young Dual Bank Manifolds

J Young Dual Bank Manifolds with Glass Stopcocks

J Young Dual Bank Offset Manifolds

Vacuum manifold options at a glance

What vacuum manifold info can you find on this page?

What a vacuum manifold actually does

What you can run on a manifold

Single bank vs dual bank vacuum manifolds

Single bank manifolds

Dual bank manifolds (Schlenk lines)

A compact note on bench space

Why J. Young greaseless valves matter

Where these vacuum manifolds get used

Air-sensitive and organometallic synthesis

Catalysis research

Materials and polymer chemistry

Inert atmosphere sample drying

Teaching and shared synthesis labs

How to choose the right vacuum manifold model

1. Decide single bank or dual bank

2. Count your ports

3. Choose your end connections and valves

Full specification comparison

Full specification comparison

How these compare to Chemglass, Sigma-Aldrich, and other brands

The valve technology is the same idea

The cost structure is different.

The serviceable design protects you long term.

What drives vacuum manifold pricing

Single vs dual bank

​Number of ports

​Valve grade

​Glass stopcocks vs PTFE valves

Gauge ports and flanges

​Adapters

Vacuum manifold and Schlenk line FAQs

10x10, 30L, up to 500°C. The Hotplate Stirrer you need.

Save time, Save money, and save valuable chemicals. It's genie-us.

Trade in your old pipettes today for a major discount toward the new Superpette.

Do you have any product inquiries or other concerns?

Why Buy From SCILOGEX?

View our 2025 Product Catalog

Earn Rewards

Download Scilogex Literature

Number of ports

Valve grade

Glass stopcocks vs PTFE valves

Adapters