Valves & Actuation
Marquest Throttle Master: Manually Actuated - CPVC \ PTFE
SKU
NA-250-CPV
Pipe Size
1/4 IN
Connection Type
Threaded
Price
$70.64
SKU
NA-375-CPV
Pipe Size
3/8 IN
Connection Type
Threaded
Price
$70.64
SKU
NA-500-CPV
Pipe Size
1/2 IN
Connection Type
Threaded
Price
$75.94
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 - CPVC \ PTFE
SKU
NG-250-CPV
Pipe Size
1/4 IN
Connection Type
Threaded
Price
$70.64
SKU
NG-375-CPV
Pipe Size
3/8 IN
Connection Type
Threaded
Price
$70.64
SKU
NG-500-CPV
Pipe Size
1/2 IN
Connection Type
Threaded
Price
$75.94
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
Plast-O-Matic RVDT Series: Automatic - CPVC \ PTFE
SKU
RVDT025T-CP
Pipe Size
1/4 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$538.13
SKU
RVDT075T-CP
Pipe Size
3/4 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$722.75
SKU
RVDT150T-CP
Pipe Size
1 1/2 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$1,050.88
SKU
RVDT200T-CP
Pipe Size
2 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$1,568.88
SKU
RVDT300T-CP
Pipe Size
3 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$3,615.50
SKU
RVDTM050T-CP
Pipe Size
1/2 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$648.38
SKU
RVDTM100T-CP
Pipe Size
1 IN
Connection Type
Threaded
Material
CPVC
Seal Material
PTFE
Price
$819.00
Series RVDT In-Line Pressure Relief Valves feature a wetted flat PTFE diaphragm to resist both chemical attack and salt crystallization problems. A large, active diaphragm area provides for smooth, chatter-free operation. Relief setting is infinitely adjustable from 5 PSI to 100 PSI. This design functions as a relief valve, by-pass valve, back-pressure valve and anti-siphon valve. The Relief Function protects systems and equipment from over-pressure and pressure surges. The By-Pass Function prevents pumps from “dead-heading”. The Back- Pressure Function maintains necessary reverse pressure in closed-loop systems. The Anti- Siphon Function prevents unwanted chemical siphoning, if city water pressure drops to zero, and changes in elevation create negative pressure. Series RVDT relief valves are constructed of Type 1, Grade 1 PVC, CPVC, Polypropylene, PTFE or PVDF Kynar® body materials. The wetted diaphragm is PTFE, energized by a non-wetted Viton® diaphragm. Springs (not in wetted area) are zinc-plated steel, fasteners are stainless steel and the adjusting screw is polyethylene.