Skip Content


1/4" Precision Air Regulator , 14 cfm Max. Flow - Regulators

  • Item # 3NA78
  • My Part #
  • Mfr. Model # PR4021-300
  • Catalog Page # 2667
  • UNSPSC # 41112404
Precision Air Regulator,1/4 In. 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 $197.00 / 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 2.0 lbs.
Country of Origin Unknown 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

Can be panel-mounted or supported by in-line plumbing. Handle has a vinyl-painted finish. Accuracy: ±0.1%.

View More

Technical Specs

  • Product Groupings Precision Air Regulator
  • Pipe Size - Regulators 1/4"
  • Max. Flow Range 0 to 16 cfm
  • Max. Inlet Pressure - Regulators 150 psi
  • Max. Temp. - Regulators 150 Degrees F
  • Overall Height Range 4-5 in.
  • Overall Width Range 2-3 in.
  • Gauge Port 1/4" NPT
  • Series Precision
  • Valve Design Balanced
  • Overall Height - Regulators 4.25"
  • Overall Width - Regulators 2.13"
  • Overall Length 2.13"
  • Body Material Zinc Die-Cast
How can we improve our Technical Specifications?

Compliance and Restrictions

  • This item is restricted for international sale.

Alternate Products

Alternate Products may not be identical in style or function to original selection. Please compare below for more information.

Alternate Search Terms

Related Products

Customer Reviews

1/4 In Precision Air Regulator , 14 cfm Max. Flow (Regulators) is rated 4.0 out of 5 by 1.
Rated 4 out of 5 by from Our paint operation air pressure to gun was flucuating with a standard regulator causing painting problems - Installed this precision air regulator and problem seems to have been eliminated. Can now hold steady air pressure at low psi.
Date published: 2013-06-04
  • y_2017, m_12, d_10, h_19
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_1
  • loc_en_US, sid_3NA78, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=FEATURED, direction=DESCENDING)]
  • clientName_grainger

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.