Skip Content


Stainless Steel (Soft Seat) Pressure Control Valve with 1/2" NPT Port Size

  • Item # 20JT51
  • My Part #
  • Mfr. Model # 647B-4-1/2-2
  • Catalog Page # N/A
  • UNSPSC # 40141608
Pressure Control Valve,250 psi,1/2 NPT close

Using 360° Viewing:

  1. Rotate: Use top-to-bottom, side-to-side by use of mouse arrow.
  2. Zoom In: Double click on image.
  3. Zoom Out/Reset: Put photo at full zoom & then double click.

CAD Downloads

Web Price $2,348.00 / each
Activate Now

to save with

Select AdvantageSM

Please sign in or register to access lists

Please sign in or register to access Quote

Get Free Standard Shipping
  • Shipping Weight 2.71 lbs.
Country of Origin USA Country of Origin is subject to change.
Note: Product availability is real-time updated and adjusted continuously. The product will be reserved for you when you complete your order. More

Product Details

In-line pressure control valve is externally adjustable and features quick response for venting applications.

View More

Technical Specs

  • Item Pressure Control Valve
  • Type Stainless Steel (Soft Seat)
  • Port Size 1/2" NPT
  • Max. Flow GPM 10
  • Max. Flow 10 gpm
  • Preset Setting (PSI) 250
  • Length (In.) 5.88
  • Width (In.) 1.75
How can we improve our Technical Specifications?

Compliance and Restrictions

  • This item is restricted for international sale.

Customer Reviews

Product Reviews Disclaimer:
Grainger is neither responsible for, nor does it endorse, the content of any product review or statement posted. Any statements posted constitute the statements of the poster and are not the statements of Grainger. The statements posted by Grainger employees with the Grainger employee badge represent the views of such employees and are not the statements of Grainger. Grainger makes no representations as to the appropriateness, accuracy, completeness, correctness, currentness, suitability, or validity of any product review or statements posted, including those posted by employees with the Grainger employee badge, and is not liable for any losses, injuries or damages which may result from any such product review or statements. Use of any linked web site provided in a product review or post is at the user's own risk.