ASA HV Tees (Grooved & Flat Flanges): Reliable Three-Way Sealing in ASA High-Vacuum Systems
ASA HV Tees (Grooved & Flat Flanges) from TFM are precision-engineered components used in high-vacuum (HV) systems that require dependable three-way connectivity. Constructed from 304L stainless steel tubing, these tees are designed with ASA-standard sexed flanges, providing a reliable sealing interface via a combination of grooved and flat flange ends.
The ASA flange system uses a grooved flange to retain an elastomeric o-ring, which mates against a smooth flat flange to form a tight vacuum seal when bolted together. TFM’s ASA HV tees allow flexible configuration across the run and branch axes, giving users the option to specify grooved or flat flanges as needed.
Key Features of ASA HV Tees (Grooved & Flat Flanges):
304L Stainless Steel Construction
Ensures long-term corrosion resistance, mechanical strength, and vacuum cleanliness—ideal for high-purity applications in R&D, semiconductor, and industrial sectors.Rotatable ASA Flanges
Each of the three ports features a rotatable ASA flange, configurable in any combination of grooved and flat sealing surfaces. This enables flexible integration with existing system hardware.Sexed Sealing Interface
Designed to meet ASA standards, one flange provides the o-ring groove while the mating flange offers a flat sealing face, forming a secure, leak-tight connection capable of reaching pressures as low as 10⁻⁸ Torr.Reducer Tees Available
TFM offers reducer versions of ASA HV Tees (Grooved & Flat Flanges), allowing users to join two different flange sizes for hybrid systems or expansion modules.Standard and Custom Sizing Options
Available in ASA sizes including 4″, 6″, 8″, 10″, and 12″, with customizable tube lengths, wall thicknesses, and flange orientations to meet specific engineering requirements.
Common Applications:
Pumping or gauge tee ports in high-vacuum chamber systems
Modular gas injection or exhaust paths
Three-way instrumentation branching
ASA infrastructure expansion or conversion
Custom foreline manifold design for lab or pilot systems
TFM provides ASA-compatible bolt sets, FKM or Buna-N o-rings, blank flanges, and adapter flanges to complete your vacuum system build efficiently and reliably.
In summary, ASA HV Tees (Grooved & Flat Flanges) offer a flexible and secure three-way vacuum connection with customizable flange sealing combinations. Whether you’re building a new vacuum infrastructure or upgrading an existing ASA system, these tees deliver robust performance and leak-tight reliability.
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