Register for an account and use coupon code FIRSTORDER to get 20% off your first online order!

Waters Equipment HiDP II Control Valve

Part #
Model #

This product will be discontinued effective June 1, 2018. Click here to view our suggested replacement. Learn More.

The Waters Equipment HiDP II control valve is an adjustable rod-in-tube pressure reducer designed for use in high-quality water sampling streams operating at pressures ranging from 500–5000 psi. The HiDP II control valve is ideal for centralized sampling systems, single-point sample conditioners or similar applications where precise adjustment of a high-pressure and low-flow stream is required.

It features adjustability using a large-diameter, crank-assisted handwheel that requires less time and effort to cycle full open and closed than similar devices. Its easy clean-out incorporates a special blow-by step in the reduction rod which requires less rod retraction from the flow path to clear the unit of trapped solids.


  • All wetted parts are 316 stainless steel to ensure high purity
  • The unit is interchangeable, fitting the exact space and mounting dimensions of similar devices
  • Plain ends standard; available with optional 1/4 inch compression fittings
  • High-pressure sample tubing is captivated with fixed alignment to ensure correct alignment with reduction rods
  • Tube-to-rod concentricity not affected by normal torquing of end fittings during installation
  • Heavy-duty pressure-retaining body constructed of extra heavy wall pipe; drive rod assembly includes deep pitch Acme thread with greater surface area to resist galling
More Information
Maximum Process Pressure 5000 psig at 300°F (345 barg at 149°C)
Process Connections 1/4 in Compression
Wetted Materials 316 SS
Standards Waters Equipment
9 Mistakes To Avoid In Your SWAS Specs

9 Mistakes To Avoid In Your SWAS Specs

Create perfect fossil power plant SWAS specs every time

Download the eBook!

© 2018 Sentry Equipment Corp. All rights reserved.