Upchurch Scientific VHP MicroTight True ZDV Union Assembly for 1/32 inch OD Tubing, 6-32 Coned, PEEK/SST, Single - UH-632

Very High Pressure VHP True Zero Dead Volume ZDV Union for 1/32” OD Capillary Tubing, 6-32 Coned Threads, 15,000 psi (1,034 bar), PEEK / Stainless Steel, Single

Includes(2) PK-126, (1) P-553 Gauge Plug

Product Number: UH-632

Categories: Connectors, Fluidic Connections, Ultra High Pressure Multiport Connectors, VHP MicroTight(r) Unions, UHP

The Upchurch Scientific / IDEX Health & Science / Biotech Fluidics UHP MicroTight Union features a durable stainless steel body and a unique stainless steel union capsule. This enables excellent chemical compatibility and conductivity making it an ideal choice for electrical interfacing in certain LC-MS applications. It delivers zero dead volume allowing two pieces of tubing to perfectly butt together. It is for 1/32" OD tubing and includes (2) PK-126 ferrules and (1) P-553 Gauge Plug.

Related Products:

• 315050 - PEEKsil™ Tubing 1/32" OD x 150µm ID Purple 50cm - 2 Pack
• U-1128 - Stainless Steel Tubing 1/32" OD x 205µm ID 30cm Clear Band

VHP MicroTight® Unions for Capillary Tubing

• Featuring stainless steel bodies and PK/PEEK fittings
• Pressure rated up to 15,000 psi (1,034 bar)
• Options to direct-connect both 1/32” OD tubing and 360 μm OD tubing

The UH-432 and UH-436 — follow the design of our popular Mini MicroFilters (see page 109) and allow a convenient union between either 1/32” OD tubing or 360 μm OD tubing. Each features a stainless steel union body and a unique stainless steel union capsule, enabling both excellent chemical compatibility as well as conductivity, making these a great choice for electrical interfacing in certain LC-MS applications. Each is also coupled with direct-connect ferrules made from our proprietary PEEK polymer blend (PK), allowing tubing connections up to 15,000 psi (1,034 bar). (Please Note: While these connectors can be used at elevated pressures, they are not recommended for applications above 100 ºC.)

The UH-632 is a more traditionally designed connector, incorporating internally threaded ports. The union (UH-632) features a true ZDV (zero dead volume) connection between both tubes. This unique product is coupled with our one-piece Ultra-High Performance Fingertight fittings manufactured from our proprietary PEEK polymer blend, allowing them to be used in high temperature applications (up to 200 ºC) at pressures up to 6,000 psi (414 bar) — or use these connectors at room temperature up to 15,000 psi (1,034 bar)!

The 1959-01 is a VHP union designed to accept the popular M4x0.7 threaded fittings for 1/32” OD tubing. These unions will work nicely with both the VHP-900 fittings as well as the reusable VHP-920.

What is a True ZDV Union?

True zero dead volume (ZDV) unions are designed so that the two joined pieces of tubing butt perfectly together as shown in the image to the right. These products have no swept volume contained within the union body. The fluid moves directly from one tube into another in this type of connector.

When using true ZDV unions, it is important to take care to ensure connecting tubing has burr-free 90 degree ends. Find tubing cutters to assist with cleanly cutting polymer and fused silica tubing. Gauge plugs are supplied with True ZDV Unions to assist with assembly. With the gauge plug inserted into one side of the union, a hard stop is created for the tubing to bottom out against as it is connected to the opposite port. The gauge plug is removed and then the second piece of tubing is connected, using the first piece of tubing to bottom out against resulting in the two tubes joined together in the center of the union.

UHPLC Product Range

• UH-196 - Ftg UltraHigh Press 1/16x10-32
• UH-196X - Ftg UH Press 1/16/10pk
• UH-402 - Union UH Press 10-32 1/16 SS
• UH-427 - Tee UH Press 10-32 1/16 SS
• UH-429 - Cross UH Press 10-32 1/16 SS
• UH-432 - MicroUnion UH Press 1/32
• UH-435X - MicroUnion UHPress Non-C 360µm
• UH-436 - MicroUnion UH Press 360µm
• UH-630 - Adpt UH Press 10-32/6-32
• UH-631-01 - Adapt Body UH 10-32/6-40 coned
• UH-632 - Union UH Press 6-32 SS ZDV
• UH-634 - Adapt SS 1/16x360µm Ftngs
• UH-634C - Adapt SS 1/16x360µm Ftngs 100pk
• UH-700 - MicroTee Assy  SS  1/32in
• UH-702 - MicroCross Assy  SS  1/32in
• UH-750 - MicroTee Assy  SS  360µm
• UH-752 - MicroCross Assy  SS  360µm
• UH-753 - MicroTee Assy SS 360µm
• UH-881 - Adpt UltraHigh Press 1/16x1/32
• UH-906 - MicroCross Assy SS 360µm
• UP-700 - Bio Union Body ZDV 10-32, .008
• UP-701 - Bio Union Body ZDV 10-32, .016