Special Valves

Custom fabricated valves, piping assemblies, and pressure vessels for various chemical processes.

Drain Valves

The purpose of a Plunger Style Drain Valve is to fill the Nozzle or Stud Pad with the plunger/extended body so that there is no dead space to fill with product. This can be a great assist in solving plugging or mix ratio issues. The Tretter Plunger Seal and Body Seal provide for a high seal quality in a wide range of configurations. Air Cylinder, Electric Motor, Air Motor, Hydraulic Cylinder and Manual Actuators are available. Welded Integral Heat Jackets are an option also.

Diverter Valves

Our Diverter Valves are an assembly of multiple Plunger or Disc Valves into a unit that can be used to Turn Flow from one line to another.  Most common uses are Parallel Filters, Parallel Pumps or to Join or Divert a Process Stream. They are available from 3/4″ to 14″. from full Vacuum to custom processes in excess of 2500# class.  The most common forms are tube style or block style designs in planar construction.  But they are also available in multi plane 3, 4, 5 and 6 way combinations. Options include; integral Heat Jacket, High Alloys, Manual, Electric, Hydraulic, or Pnuematic operators.

Sampling Valves

Sampling valves are as varied as there are applications. There are many ways to mount or configure the valve to fit your pipe or vessel. The sampling valve name applies to valves that are used for injection, venting, draining, kill valves and sampling. The sizes generally range from 1/4″ to 2″. The can be flanged or threaded or welded to the pipe or vessel. Actuation can be handle, handwheel, spring to close lever, air cylinder or air motor. Integral welded heat jackets are also available.

Line Shutoff Valves

The In-line Shutoff Valve is the perfect choice for situations where you need absolute dead tight shutoff.  The valve has a raised seat so there is no pocket in the line.  Other valves have a recess in which product can puddle and degrade.  The raised seat makes it so the line is completely drainable on either side of the seat.  Combine a line drain with the In-line Shutoff Valve and you have a perfect combination for polymer shut down.   This design uses the plunger seal so it can be used in high temperature / high pressure processes including 2500# @ 1000F.  Available in either full port or reduced port designs.  Another option for In-Line Shutoff is the inclusion of a small Line Blind to guarantee no leakage.  Seen towards the bottom of the page was a recent design including an integral swing style line blind.

Line Blinds

Line Blinds are an assembly that makes the process of blanking off a line into a simple procedure. Our design accomplishes the task without the use of any tools. The operator simply turns the handle and swings or slides the plate. The blind is designed to be an integral piping component. It is fully ANSI rated and involves no spreading of the pipe. Available in sizes 3/4” to 44”. Available in classes to 1500# depending on size. The blind design can be either Swinging as shown below or Sliding (as seen in our videos) in the larger sizes to support the weight.

Reasons to use Line Blinds
A: A line blind can be changed in minutes saving labor costs every time it is used
B: A line blind gives a visual indicator of line condition
C: You can blank a line with one person even in the largest sizes
D: No tools required
E: No spreading of the pipe so no sagging when changing
F: Since the blind is a solid plate, there is zero down stream leakage

Quick change Spectacle Blinds

  • Common Applications:
  • Tank Farms
  • Steam lines
  • Cement Plants
  • Loading Stations
  • Feed lines
  • Mining
  • Pharmaceutical Plants
  • Shipping terminals
  • Paper Mills
  • Cryogenic plants
  • Refineries
  • Pipelines
  • Pigging Stations
  • Cokers