Filtration & Separation & Purification
Valves
Select from a variety of pinch, isolation, flow selection, rocker, and electronic rotary-style valves to open or close off fluid pathways.
Pinch Valves
Pinch valves feature a contoured, smooth design for simple tube installation and removal that's easily integrated and mounted onto manifolds. These valves are available in multiple configurations to control flow across two, three, or even eight medical-grade tubing lines to provide an inert flow path with zero dead volume.
· High tolerance of particulates, precipitate, and sediment
· Frequent cleaning or changing of fluid lines
· Low-pressure flow passage through flexible tubing
· Pressure rated up to 30 psi
· 0.75” or 1.00” solenoid diameter sizes
· Retains a variety of qualified tubing materials including silicone, C-flex, and BPT
· Retains 0.093-0.25” OD tubing
· Available in a variety of valve configurations including normally open, normally closed, and three-way
Isolation Valves
Solenoid-operated isolation valves offer instrument designers a completely inert, nonmetallic fluid path, using a flexible diaphragm to isolate the solenoid actuation mechanism from the fluid path. Isolation valves deliver low internal volumes, precise flow control, and excellent ease of installation.
· Precise, repeatable dispensing of aggressive or expensive reagents
· Fast response with high pressures
· Flow diversion and selection
· Custom designs available up to 500 psi pressure rating
· Robust design rated up to 10 million cycles
· Available in a variety of valve configurations including normally open, normally closed, and three-way.
· Valve orifice sizes ranging from 0.032 - 0.125”
· Available with PTFE, PEEK, PPS, FKM, PSU, FFKM, and EPDM materials
Flow Selection Valves
Flow selection valves combine multiple valve actuators into a single, compact unit to provide flow paths of equal length. Flow paths can be made from extremely inert materials, making these valves particularly suitable for highly aggressive or high-purity fluid applications.
· Equal length flow paths with identical response times, pressures, flow rates, and internal volumes
· Flow mixing, flow selection, and stream splitting
· Reduced cost, leak potential, and maintenance
· Simplified control systems
· Available with PTFE, PEEK, PPS, FFKM, and EPDM materials
· Valve orifice sizes ranging from 0.032 - 0.125”
· Internal fluid volumes ranging from 91 - 2,615 µL
· Pressure rated up to 20 psi
Rocker Valves
Our Opus rocker valves offer a stable, higher-flowing, long-lasting valve solution, ultimately setting a new standard in modern fluidics for dependable fluid handling in a small space and a precise flow rate with a small footprint and low internal fluid volume. Rocker valves are ideal in applications that require fluid interaction with optical detectors and increased flow rates without an increased footprint.
· Response times less than 10 milliseconds
· Pressure rated up to 30 psi
· 40 percent smaller than competitors
· Robust design rated to 15 million cycles
· Compact size of 1 mm with an orifice size of 1.6 mm
· Internal fluid volume of 35 µL
Electric Rotary Valves
Electric rotary valves, or rotary shear valves, are stepper, motor-driven fluid handling valves that provide an inert flow path for aggressive fluids by aligning holes in a PCTFE rotor with holes in the PTFE body. ERVs can be used for port selection or loop injection applications.
· Available in 4- 6- 8- 10- and 12-way port designs
· Pressure rated up to 200 psi
· Port orifice size ranging from 0.032-0.096”
· Head diameter ranging from 1.25 - 1.75”
· Angular move distance between 30 - 90 degrees
· Port-to-port move time between 125 - 250 ms
라프바이오텍(주) | Leaders And Frontiers of Biotechnology