Skip to content
PRICE DEMOLITION SALE: Hundreds of Job-Crushing Deals. Shop Now >
Northern Tool Equipment Logo TextNorthern Tool Equipment Logo text link to Home.

Free Gift Card on All Orders Over $100 See Details

Final Day

Free Gift Card Details

$100 Order

$10
gift card

$250 Order

$25
gift card

$500 Order

$50
gift card

$1000 Order

$100
gift card
  • The promotion will be automatically applied on the Shopping Cart page.
  • To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
  • Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
  • E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
  • Free e-gift cards expire 11/01/26.
  • Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
  • Valid online and in participating retail stores.
  • Limited-time offer. Subject to change without notice.
Print

ARO Ingersoll Rand, 1/4in. Precision Regulator, Model# PR4021-300

Item# 4972974
ARO Ingersoll Rand, 1/4in. Precision Regulator, Model# PR4021-300

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

ARO Ingersoll Rand, 1/4in. Precision Regulator, Model# PR4021-300

Click or Tap image to Zoom

$253.76

  • Shipping: 

    Free shipping (lower 48 states) - Factory shipped

  • Store Pickup: 

    Not available - online only
  • Precision / air regulators are high precision, multi-stage pressure regulators

See full description

  • Description

  • Key Specs

  • Reviews

  • Q & A

  • Warranty

  • Compare

Product Summary

Features Precision / air regulators are high precision, multi-stage pressure regulators. The highest degrees of regulation and repeatability are achievable by reacting to downstream pressure fluctuations as small as 0.01 psig (0.07 kPa) above set pressure. Action occurs as downstream pressure is piloted to the control chamber to act on a finely tuned, stainless steel measuring capsule. A continuous bleed of less than 0.08 scfm (0.15 m/hr) works on the pilot diaphragm causing appropriate movement of the supply valve or the relief valve. Movements as small as .0001in. (.0025 mm) will cause the main valve to correct to the proper position. Relief flows of up to 10 scfm can be achieved on the high relief model (-100 models). Exhaust is achieved through the exhaust vents located in the side of the body.
  • The precision / air regulator controls output pressure with an accuracy of 0.1 percent, and has very low sensitivity to changes in supply pressure and flow
  • The regulator has been designed to eliminate the need for any readjustment of the regulated pressure after long “down time.” At start-up, the regulated pressure will return to its output setting
  • The regulated pressure is held constant over substantial changes in flow due to the high-gain pneumatic servoamplifier. Particularly good from dead-end to 12 scfm (203.4 m3/hr.)
  • The unit may be installed in any position. It can be panel mounted or supported by in-line plumbing

    • What's Included

      (1) REGULATOR

    Features + Benefits

    • Precision / air regulators are high precision, multi-stage pressure regulators

    Key Specs

    AttributeSpecification

    item#

    		4972974

    Brand

    		ARO Ingersoll Rand

    Manufacturer's Warranty

    		2 year limited warranty

    Ship Weight

    		2.0 LB

    Min. Temperature

    		20 °F
    AttributeSpecification

    Max. Temperature

    		150 °F

    SCFM

    		14

    Product Weight

    		1.7000 lb

    Dimensions L x W x H (in.)

    		5.2 x 2.7 x 2.4 in

    Reviews

    Questions & Answers

    130 Reviews This action will navigate to reviews.

    Questions

    Warranty

    Manufacturer's Warranty

    2 year limited warranty

    Recently Viewed Items

    This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.

    ARO Ingersoll Rand, 1/4in. Precision Regulator, Model# PR4021-300
    4.8 out of 5 stars. 130 reviews

    ARO Ingersoll Rand, 1/4in. Precision Regulator, Model# PR4021-300

    Item # 4972974

    $253.76