Stainless Steel Vacuum Gas Manifold

What is the Stainless Steel Vacuum Gas Manifold?

A stainless steel vacuum and gas manifold switches between vacuum and gas for several vessels under pressure or vacuum. It is used in glovebox work, gas adsorption studies and inert sample handling.

Overview

This manifold is a stainless steel block or tube set with high-quality valves that can connect each station either to vacuum or to a gas supply, and it is rated for both sub-atmospheric and modest positive pressure. Design pressures range from full vacuum to 5 or 10 bar, and a pressure gauge or transducer monitors each mode. Valves may be bellows-sealed for leak-tightness in hydrogen or helium service, and fittings are often VCR or compression type to minimize leaks. The manifold is used to evacuate and backfill vessels, to dose gas at controlled pressure and to prepare samples for adsorption, permeation and surface area measurement. Heaters or a jacket can be added when outgassing requires elevated temperature, and the whole assembly is often mounted in a frame with a vacuum pump and gas panel.

How does it work?

A vacuum manifold is a tube or block with one inlet for the pump and several valved outlets. Opening a valve connects that outlet to the vacuum while the others remain closed, so each station can be isolated without disturbing the rest. The manifold body must have enough internal bore that flow is not restricted, and each valve must seal reliably at the working vacuum. A gauge or regulator may be fitted to set and monitor the level. Manifolds are made from stainless steel, PTFE, polypropylene or glass depending on chemical exposure and temperature, and connections are usually hose barbs, luer fittings or flanges. Versions with a purge or vent port allow controlled release of vacuum. Because all ports share one pump, the pump flow must be sufficient for the number of stations in use at once.

What are the key features?

• Valves select vacuum or gas for each station
• Rated from full vacuum to 5–10 bar
• Bellows-sealed valves for high leak-tightness
• VCR or compression fittings to minimize leaks
• Pressure gauge or transducer monitoring
• Optional heating or jacket for outgassing

What are the technical specifications?

A typical stainless steel vacuum gas manifold configuration offers number of stations of 2–8, pressure range of Full vacuum to 10 bar, body material of Stainless steel 316L, valve type of Bellows-sealed or ball, fittings of VCR or compression and leak rate of < 1 × 10⁻⁹ mbar·L/s helium. Values are indicative of the product class; the exact figures for each configuration are confirmed on the quotation and the calibration documents supplied with the instrument.

Which applications is it used for?

The Stainless Steel Vacuum Gas Manifold is used in gas adsorption and surface area studies, glovebox gas and vacuum panels, inert sample dosing and backfill, permeation and diffusivity testing and catalyst pretreatment under gas. Across the wider Vacuum Manifolds class, laboratories also deploy it for multi-place vacuum filtration, solid-phase extraction and schlenk line vacuum and gas.

Which standards and certifications apply?

Relevant standards and methods include IEC 61010-1, ISO 21360, ISO 9001, USP <711> and GB 4793.1. Certification candidates for this model are CE, ISO 9001 manufacturing and PED compliance; each is to be confirmed for the specific configuration before shipment, and certificates are supplied only where they have been issued.

Check every valve for leaks at the working vacuum, because a single leaking port reduces performance at all stations. Use the correct tubing and clamps, and avoid kinking or long runs that reduce conductance. Keep manifolds clean and dry, and do not use vacuum grease where it can contaminate samples or block fine passages. Do not exceed the rated vacuum if the body is glass, and support glassware to avoid stress. For solvent work, trap vapor before it reaches the pump and route exhaust safely. Follow IEC 61010-1 for associated electrical equipment. Record the vacuum achieved at each port during commissioning, so that a blocked valve or leaking connection is noticed early.

How do I select the right Stainless Steel Vacuum Gas Manifold?

Choose a stainless vacuum and gas manifold when vessels must be evacuated and backfilled with precise gas pressure, and leak-tightness matters. For simple inert purging, a Schlenk manifold may suffice. In the RFQ, state stations, pressure range, gases, fittings and leak-rate requirement.

How does it compare with other Vacuum Manifolds variants?

Choose the number of ports from the maximum number of stations you will run at once, and check the internal bore so the last port still receives adequate vacuum. Select the body and valve materials for your solvents: PTFE and polypropylene for aggressive chemistry, stainless steel for durability and higher temperatures, and glass for visibility and inertness. Decide which connection type suits your flasks, cartridges or reactors, and whether each port needs an individual control valve or a simple on-off stopcock. Add a gauge or a regulator if the vacuum level must be set, and a vent or purge port if you need to release vacuum gradually. Confirm the pump flow rating for the total number of ports, and consider a manifold with a removable tray or rack for holding vessels.