Valves & Actuation
![Marquest Lab Faucet with Duraline Control Valve: Manually Actuated](/sites/default/files/styles/list/public/images/product/0d692b4b5aa1d6ef419683ec3478/LG-DD-HC1_0.jpg?itok=PFAISkFP)
New - Hot and Cold Mixing Lab Faucet for precise control of flow rates and temperature.
![Marquest Lab Faucet with Duraline Control Valve: Manually Actuated](/sites/default/files/styles/list/public/images/product/f6c3ffb5d3e1979ad603cd4a4d28/Deckmount_0.jpg?itok=2OFFpAga)
Note - Right handle control valve. Left handed available.
![Marquest Lab Faucet with Duraline Control Valve: Manually Actuated](/sites/default/files/styles/list/public/images/product/fca72c217e714db8c86ab0776d98/LG-WD-R1_0.jpg?itok=8zNTBNU-)
Note - Right handle control valve. Left handle available.
![Marquest Throttle Master: Manually Actuated - PP \ PTFE](/sites/default/files/styles/list/public/images/product/ebfbe888736fb57cfea5f1098836/NA%20250%20PVC_0.jpg?itok=3o8bc5x2)
Produced in two styles: Globe pattern (straight 180°) and Angle pattern (90°). NSF standard 14 & 61 compliant, FDA, USDA and USP standards met or exceeded. Fine metering control, excellent linearity of flow. No elastomer (O-rings) metals or lubricants. Working pressures to 250 psi @ 70°F.
![Marquest Throttle Master: Manually Actuated - PP \ PTFE](/sites/default/files/styles/list/public/images/product/d94dbba26ce0193618228642a22b/NG%20250%20PVC_0.jpg?itok=sYVdzUY8)
Marquest Scientific’s complete line of Throttle Master™ Needle Valves provide precise control with fine adjustment of corrosive and high purity fluids. The developed metering chamber provides for the most reliable stabilization and linearity of flow. Produced in two styles: Globe pattern (straight 180°) and Angle pattern (90°). Needle finish, SPI/SPE No. 1. Bubble tight, low torque shutoff, long term performance. NSF standard 14 & 61 compliant, FDA, USDA and USP standards met or exceeded. Needle stem is PTFE sealed for excellent chemical resistance