Constant Pressure Cylinder with Assist Mechanism

Designed as DOT 3E with
Special Permit #SP-20245

Constant Pressure Cylinder with Assist Mechanism

Purpose:

The assist handle model is designed for low pressure application where the process pressure is not suffi cient to drive the piston rearward while collecting a sample. Our piston will typically move with at least 25 psi of diff erently pressure. If the application involves a lower pressure or the process characterisitcs are such that they can foul the piston, then the assist handle can be used to overcome the forces of "stickation".

The assist handle is not recommended for high pressure applications.

Features

  • ELECTRO POLISHED CYLINDER BORE
  • NON-HYDRO CARBON LUBRICANT
  • VERY LOW FRICTION FOR LOW PRESSURE APPLICATIONS
  • PEEKĀ© SEATS ON NEEDLE VALVES FOR LONG LIFE
  • EASY CLEAN UP
  • GAUGES CAN BE SIZED TO THE APPLICATION
  • CYLINDER RATED FOR 1800 PSI
  • EASY TO READ MAGNETIC SCALE
  • TEFLON MIXING BALL MEANS NO DENTS OR SCRATCHES TO CYLINDER BORE
  • SPECIAL VORTEX MIXER AVAILABLE FOR HIGH GRAVITY FLUIDS
  • RATED FOR 300° F
  • SULFINERT™ WETTED PARTS ARE AVAILABLE

500 cc Size
SHOWN

Specifications

Description Spec
Wetted Metal 316 SS
Elastomers Viton; 90A Molythane
Tie Rods & Nuts 304 SS
Mixing Ball PTFE
RUPTURE DISC INCONEL 600
Pressure Rating of Cylinder 1800 PSi @ 200°F
Valve Seats Delrin
Valve Seals Viton 75
Temperature Rating 300°F

Constant Pressure Assist Mechanism Diagram 1

Dimensions & Weights

Size Overall Length Weight
300 cc 13.6" 12.3 lbs
500 cc 20.5" 13.0 lbs
1000 cc 34.9" 19.0 lbs

Constant Pressure Cylinder Assist Mechanism Diagram 2

Piston Features

  • Wear Rings - Prevent metal to metal contact between the piston and cylinder
  • Teflon Encapulated Magnets - Prevent rust and corrosion from building up on the magnets