Manual Valves : Omnifit - LOW Pressure
'cap-type' connectors with valves

New manual rotary distribution valves
New from Omnifit is a range of large manual rotary distribution valves for high precision gas and fluid control in laboratory equipment and analytical instruments.

Pressure rated up to 500 psi (33 bar), the new valves have chemically inert PTFE wetted parts, sturdy PEEK casings and KEL-F rotors.
There are 5, 7, 9 and 11 port versions for 4-way, 6-way, 8-way and 10-way distribution, as well as 6 and 10 port versions for loop injection.
Port connections are standard ¼ - 28 UNF threads and port sizes are standard 1.5 mm. Each port is identified by a simple click-stop.

SMALL Tube : 0.5 to 4mm OD tube

• Variable bore connectors with valves Instant tube connection

• Chemically inert

• Colour-coded caps for identification

• Typical presssure rating 50 psi (3 bar)

• On-off operation

The Omnifit range of 'Cap-type' valves is a versatile system for connecting different types of hardwall tubing such as PTFE, instantly.
Each connector has a manual valve operation, enabling flow to be switched on or off. They can be used for sampling, flow-splitting, mixing and fluid line interconnection.
Tubing sizes between 0.5 and 4mm OD can be connected using either Viton O-rings or PTFE cones.
O-ring option
One large and two small Viton O-rings are suppled as standard with every connector.
These allow instant connection of tubing sizes from 1mm to 4mm OD and make a compression-type fitting.
PTFE cone option
PTFE cones are supplied as standard with every connector: 1/16'' (0.4mm) with standard bore connectors and 1/32'' (0.8mm) with small bore connectors.
A range of PTFE cones to accept other tubing sizes from 0.5mm to 4mm OD tubing are also available separately. PTFE cones also make a compression-type fitting, but ensure an all-PTFE flow path.
Standard bore valves
Standard bore valves are supplied with Viton O-rings, 1/16'' PTFE cones and coloured polypropylene caps.
They have a 1.5mm bore size and accept tubing sizes between 0.5 and 4mm OD.
Small bore valves
Small bore valves are supplied with Viton O-rings, 1/32'' (0.8mm) cone and natural Tefzel caps.
They have a bore size of 0.8mm and can accept tubing sizes between 0.5 and 4mm OD.
The coloured or Tefzel caps have an internal thread that accepts 1/4''-28 UNF fittings, such as the Omnfiit inverted cone or Gripper fitting.
The PTFE cone supplied with the connector provides the flat bottom for the 1/4'' -28 UNF fitting to give a leak-free, self-centering connection

Small Tubing Manual Valves
Part Nos examples

Small manual rotary valves with Omnifit
'Cap- type' connections

• Small manual rotary valves Simple or complex flow options

• Low dead volume

• Low and high pressure ratings

• PTFE body

• Kel-F® key

• Small and large bore versions

Distribution pattern printed on top for easy ID Omnifit's small manual rotary valves use the 'cap-type' connection system and can be used for sampling, flow-splitting, mixing and fluid line interconnection.
They have a 1.5mm bore size and accept tubing sizes between 0.5 and 4mm OD. They are pressure rated to 50 psi/3.3 bar.
The valves are available in 4 and 5 port versions and any spare ports can be sealed with a plug (part number 002320) or by using a PTFE cone blank ( part number 001514 ) for maximum flexibility.
4-port valves
4-port valves allow flow across selected ports, from either one or two inlets to a combination of the remaining ports. Flow configurations available for 4-port valves can be seen on the left of the picture above.
5-port valves
All the 5-port valves utilise the bottom port as the inlet and allow flow to a combination of the remaining 4 ports.
Flow configurations available for 5-port valves can be seen on the right of the picture above.
Omnifit 'cap-type' connections
The valves are supplied with Viton O-rings, 1/16'' PTFE cones and coloured polypropylene caps integral to the Omnifit 'cap-type' connection system.
O-ring option
One large and two small Viton O-rings are supplied as standard with every valve. These allow instant connection of tubing sizes from 1mm to 4mm OD and make a compression-type fitting.
PTFE cone option
1/16'' (0.4mm) PTFE cones are supplied as standard with every valve. A range of PTFE cones to accept other tubing sizes from 0.5mm to 4mm OD tubing are also available separately.
PTFE cones also make a compression-type fitting, but ensure an all-PTFE flow path.

The coloured or Tefzel caps have an internal thread that accepts 1/4''-28 UNF fittings, such as the Omnfiit inverted cone or Gripper fitting. The PTFE cone supplied with the valve provides the flat bottom for the 1/4'' -28 UNF fitting to give a leak-free, self-centering connection.

Small Rotary Valves
Part Nos

Large Tube :  4 to 11mm OD tube

• Leak-free, reliable connections

The Omnifit range of 'Cap-type' connectors is a versatile system for connecting different types of hardwall tubing such as PTFE, instantly.
These valved versions can be used for sampling, flow-splitting, mixing and fluid line interconnection.
Tubing sizes between 0.5 and 11mm OD can be connected using either Viton seals or PTFE cones.

Viton seal option
Viton seals are suppled as standard with every connector.
These allow instant connection of tubing sizes from 4mm to 11mm OD and make a compression-type fitting.
PTFE cone option
A range of PTFE cones to accept Imperial tubing sizes from 5/32'' to 7/16'' and metric tubing sizes from 4mm to 11mm OD are available separately.
PTFE cones also make a compression-type fitting, but ensure an all-PTFE flow path.
Large bore to large bore connector with valve
These are supplied with Viton seals in both ends of the connector and can be used to connect tubing sizes from 4 to 11mm OD. They have a nominal 4.7mm bore size.
Large to small bore reducing connector with valve
The large bore end has a Viton seal suitable for 4 to 11mm OD tubing sizes and the small bore end is supplied with one large and 2 small Viton O-rings suitable for 0.5 to 4mm OD tubing sizes.

The coloured or Tefzel caps at the small bore end of the valve have an internal thread that accepts 1/4''-28 UNF fittings, such as the Omnfiit inverted cone or Gripper fitting. PTFE cones are available separately and should be used with the connector to provide the flat bottom for the 1/4'' -28 UNF fitting to give a leak-free, self-centering connection.

Large Tubing Manual Valves
Part Nos

08

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