Dresser Style 721 Transition Fitting - Steel to PE, 3-12 in
Dresser Style 721 Transition Fitting product photo
Dresser Style 721 Transition Fitting dimension drawing
Dresser Style 721 Transition Fitting dimension drawing
Dresser Style 721 Transition Fitting specification table
Dresser Style 721 Transition Fitting - Steel to PE, 3-12 in
Dresser Style 721 Transition Fitting product photo
Dresser Style 721 Transition Fitting dimension drawing
Dresser Style 721 Transition Fitting dimension drawing
Dresser Style 721 Transition Fitting specification table

Dresser Style 721 Transition Fitting - Steel to PE SDR 11 Gas Main

Nominal Size: 3 in
PE Grade - Part No.: PE 2708 Medium Density - 072103PE110M

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$751.05
SKU: 072103PE110M
Weight : 12.0 lb
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Description
Dresser · Gas Transition Fitting
Style 721 Transition Fitting
Monolithic steel to PE SDR 11 transition fitting for gas mains, 3 in to 12 in.
Steel to PE SDR 11
ASTM F1973 Category 1
ASTM F2897 Traceability
PE 2708 or PE 4710
12-155 lb Weight
Overview

The Dresser Style 721 joins standard wall steel to SDR 11 polyethylene in one monolithic body, so there are no extra pressure-containing parts to qualify or trace. The grip uses the tooth profile proven in the Style 711 line, and the steel heat code is stamped on the fitting.

Application: Steel to PE transitions on natural gas distribution mains.

  • Fully qualified to ASTM F1973 Category 1
  • Medium density PE 2708 and high density PE 4710 versions
  • Two O-ring seals with insert stiffener
  • ASTM F2897 traceability label on every fitting
What Ships and What It Needs to Run

Included: transition fitting with insert stiffener and O-ring seals.

Genuine Dresser equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.
12-Month Dresser Warranty

Covered for 12 months from the date of purchase under Dresser’s published warranty terms.

Working Pressure

Dresser publishes the Style 721 as qualified to ASTM F1973 Category 1; the rating on the product label governs.

Source: Dresser Style 721 Transition Fitting Spec Sheet. The rating on the product label is the actual rating of each part.

Materials Specifications
Body Monolithic steel, heat code stamped
Seals Two O-rings
PE SDR 11, PE 2708 or PE 4710
Steel Standard wall, Schedule 40

Source: Dresser Style 721 Transition Fitting Spec Sheet.

Sizes
Nominal Size PE Grade
3 in PE 2708 Medium Density, PE 4710 High Density
4 in PE 2708 Medium Density, PE 4710 High Density
6 in PE 2708 Medium Density, PE 4710 High Density
8 in PE 2708 Medium Density, PE 4710 High Density
12 in PE 2708 Medium Density, PE 4710 High Density

Sizes as listed in Dresser’s 2026 price lists; the picker shows the part number for each build.

Before You Order. Confirm the steel wall is standard (Schedule 40) and the PE is SDR 11; other ratios are quoted by Dresser. Non-stock Dresser parts are not returnable without Dresser’s authorization, and ship time is confirmed when you order. Custom builds (other sizes, widths, gaskets or materials) are available: email sales@watermainsupply.com with the pipe OD, material and line content.
For engineering-led sizing and selection support or a factory submittal, email sales@watermainsupply.com or call 1-888.510.4036.
© Watermain Supply — A division of E4 Industrial LLC
Data Sheet
Style 721 Transition Fitting Spec Sheet
Videos

Product videos are being added to this listing. For a walkthrough in the meantime, email sales@watermainsupply.com.

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