Dresser Style 90 Compression Fittings product photo

Dresser Compression Fittings: Style 65, 90 and 90 Universal

Dresser compression fittings join 1/2 to 2 in service pipe without threading, flaring or welding: stab the pipe in and tighten the nuts. Use the Style 65 on steel water lines, the Style 90 on steel gas services, and the Style 90 Universal to seal and restrain polyethylene and steel. Order by Dresser part number.

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Dresser Style 65 Compression Fittings - Couplings & Adapters
Dresser Style 65 galvanized compression couplings and fittings

Dresser

Free Shipping $499 or more

Dresser Style 65 Compression Fittings - Couplings & Adapters

From $34.72
Dresser Style 90 Universal Compression Fittings
Dresser Style 90 Universal compression fittings

Dresser

Free Shipping $499 or more

Dresser Style 90 Universal Compression Fittings

From $64.04
Dresser Style 90 Compression Fittings
Dresser Style 90 seal-only compression fittings

Dresser

Free Shipping $499 or more

Dresser Style 90 Compression Fittings

From $53.75

Dresser Compression Fittings: Style 65, 90 and 90 Universal

Dresser · Compression Fittings

Dresser Compression Fittings: Style 65, 90 and 90 Universal

Boltless compression couplings, elbows, tees, adapters and caps for 1/2 to 2 in steel and polyethylene service pipe. No threading, flaring or welding.

Dresser Style 90 compression coupling
1/2 to 2 inPipe sizes
150 PSIStyle 90 MAOP
ASTM F194890 Universal, Cat 1
Ships assembledStab and tighten

Dresser compression fittings join small plain-end service pipe without threading, flaring or welding: loosen the end nuts, stab the pipe in and tighten. A resilient gasket under each nut seals the joint and keeps it flexible, and the pipe keeps its full wall thickness at every joint. The Style 65 is the boltless fitting for steel water and service lines. The Style 90 joins steel to steel on natural gas service lines, with plain, armored and insulating builds. The Style 90 Universal seals and restrains polyethylene and steel service pipe in one fitting, qualified to ASTM F1948 Category 1.

Replacement gaskets, end nuts, retainer cups and insulators for both styles are listed separately. Every variant ends with the Dresser part number. Call 1-888.510.4036 or email sales@watermainsupply.com. Genuine Dresser equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.

Will It Work for Your Job?

Pressure

The Style 90 is rated 150 PSI maximum allowable operating pressure, and the Style 90 Universal seals to 150 PSI. The Style 65 uses malleable iron bodies to ANSI 150 PSI fitting dimensions.

Temperature

Dresser limits every gasket grade to 150°F inside Style 65, 88 and 90 compression fittings, even where the same grade runs hotter in a coupling.

Pipe

Style 65 and Style 90 fit steel pipe, 0.84 to 2.38 in OD. The Style 90 Universal also fits PE pipe to ASTM D2513, with an insert stiffener matched to the pipe SDR in every PE pipe end.

Size It With Us

Send the pipe OD, pipe material and line content. We confirm the part number before you order. 1-888.510.4036 · sales@watermainsupply.com

Product Lines

Pick by pipe material and whether the joint must hold the pipe in.

Style 65 Fittings

Style 65 Fittings

Couplings & Adapters

Sizes1/2 to 2 in
BodyMalleable iron
GasketArmored Grade 27
FinishGalvanized or E-coat

Boltless couplings, long couplings, 45 and 90 degree elbows and male adapters for plain-end steel pipe.

  • Insulating adapter gaskets join steel to copper
  • Grade 42 armored gaskets on request
Best for Steel water and service lines
View Style 65 Fittings
Style 90 Fittings

Style 90 Fittings

Sizes1/2 to 2 in
MAOP150 PSI
BodyCast iron or forged steel
GasketsPlain, armored, insulating

Steel to steel compression fittings with self-centering steel retainer cups that protect the gasket and give a true feel for tightness.

  • Insulating couplings, tees and elbows
  • Tap-N-Valve tees
Best for Steel gas service lines
View Style 90 Fittings
Style 90 Universal

Style 90 Universal

Sizes3/4 to 2 in
Sealing150 PSI
StandardASTM F1948 Cat 1
PipePE and steel

Seal and restraint fitting: tightening the nut compresses the gasket and sets a grip ring that holds tighter as pressure tries to pull the pipe out.

  • PE to PE, PE to steel, steel to steel
  • Pullout resistance 1,300 to 6,600 lb on steel
Best for PE and steel gas services
View Style 90 Universal

Compare the Line

Listing Sizes Rating (Dresser) Pipe Fittings
Style 65 1/2 to 2 in ANSI 150 PSI bodies, 150°F Steel Couplings, long couplings, elbows, male adapters
Style 90 1/2 to 2 in 150 PSI MAOP Steel to steel Couplings, elbows, tees, insulating builds, caps
Style 90 Universal 3/4 to 2 in 150 PSI, ASTM F1948 Cat 1 PE and steel Couplings, reducers, elbows, tees, adapters, caps
Style 65 gaskets and parts 1/2 to 2 in 150°F in the fitting Steel Gaskets, insulating adapter gaskets, nuts, cups
Style 90 gaskets and parts 1/2 to 2 in 150°F in the fitting Steel Gaskets, insulators, nuts, cups
Quick rule: Steel water line, use the Style 65. Steel gas service, use the Style 90. Polyethylene gas service, or any joint that must resist pullout, use the Style 90 Universal.

Dresser vs Other Brands We Carry

Need Dresser Smith-Blair (also on our site) Verdict
Compression coupling Style 65 and 90 Style 525 Comparable small-pipe couplings; Dresser offers more fitting shapes and insulating builds
Tee Style 90 tees Style 418 tee coupling Check size and outlet type for your service

We carry both brands. Send the pipe size, material and service and we quote the better fit.

Selection Guide

Job Pipe Recommended
Join or repair a steel water line Steel, 1/2 to 2 in Style 65 coupling or long coupling
Change direction on a steel line Steel Style 65 or 90 elbow
Join steel gas service pipe Steel, 1/2 to 2 in Style 90
Break cathodic protection at a service Steel Style 90 insulating coupling or tee
Join PE gas service pipe, restrained PE to ASTM D2513 Style 90 Universal with insert stiffener
Join PE to steel on a gas service PE and steel Style 90 Universal
Join steel to copper of the same nominal size Steel and copper Style 65 with insulating adapter gasket

Sizing and Best Practices

Match the pipe OD

These fittings are listed by nominal size and OD: 1/2 in steel is 0.84 in OD, 3/4 in is 1.05, 1 in is 1.315, 1-1/4 in is 1.66, 1-1/2 in is 1.90 and 2 in is 2.375 in. Copper tube is smaller than steel of the same nominal size.

Prepare the pipe

Seat the gaskets on clean, round pipe free of gouges and loose scale. On PE, the pipe must be free of scratches and burrs.

Insert stiffeners on PE

Every PE pipe end in a Style 90 Universal needs a Dresser insert stiffener matched to the pipe SDR, ordered separately.

Anchor where needed

Style 65 and Style 90 seal and allow a little movement, up to 1/16 in per gasket on the Style 90. Anchor the line where pullout could occur, or use the Style 90 Universal.

Need help? Send the pipe OD and material to sales@watermainsupply.com and we confirm the Dresser part number.

Why Engineers Specify It

No Threading

Stab the pipe in and tighten the nuts.

Full Wall Thickness

No threads cut into the pipe.

Ships Assembled

No loose parts in the ditch.

Insulating Builds

Break cathodic protection at the service.

Seal and Restraint

Style 90 Universal grips PE and steel.

Part Number Ordering

Every variant ends with the Dresser part number.

Related Dresser Products

Dresser Style 65 Gaskets, Nuts & Retainer Cups

Style 65 Gaskets, Nuts & Retainer Cups

ViewDresser Style 90 Gaskets, Nuts & Retainer Cups

Style 90 Gaskets, Nuts & Retainer Cups

ViewDresser Insert Stiffener - PE Gas Pipe, for Style 711 and 700

Insert Stiffener

PE Gas Pipe, for Style 711 and 700ViewDresser Style 501 Compression Fitting - CTS PE Gas

Style 501 Compression Fitting

CTS PE GasView

Genuine Dresser parts, listed by Dresser part number.

Why Buy From Watermain Supply

Engineering-Led Selection

We check pipe OD, material and line content against Dresser data before we quote.

Multi-Brand Honesty

We carry Dresser and Smith-Blair. If one is not the right fit for your job, we say so.

Order by Part Number

Every variant ends with the Dresser part number, so you get exactly what the spec calls for.

Account Terms

Net terms for contractors, utilities and municipalities on approved accounts.

Data Sheets on Every Listing

Dresser technical specifications and installation instructions are attached to each product.

Gulf Coast Service

Houston-based team for the Gulf Coast and nationwide shipping.

Frequently Asked Questions

What is a Dresser compression fitting?

A boltless fitting that seals plain-end pipe with gaskets compressed by end nuts. Loosen the nuts, stab the pipe in and tighten. No threading, flaring or welding.

What is the difference between Style 65 and Style 90?

The Style 65 is the boltless fitting for steel water and service lines. The Style 90 joins steel to steel on gas services and adds insulating builds and retainer cups.

What does the Style 90 Universal do that the Style 90 does not?

It seals and restrains, and it joins PE as well as steel. A grip ring holds the pipe tighter as pressure tries to pull it out. It meets ASTM F1948 Category 1.

What pressure are Dresser compression fittings rated for?

The Style 90 is rated 150 PSI MAOP and the Style 90 Universal seals to 150 PSI. Style 65 bodies follow ANSI 150 PSI fitting dimensions.

What is the temperature limit?

150°F for every gasket grade inside Style 65, 88 and 90 fittings.

Do I need an insert stiffener?

Yes, on every PE pipe end in a Style 90 Universal. Order the Dresser stiffener matched to the pipe SDR.

Can I join steel to copper?

Yes, with a Style 65 fitting and an insulating adapter gasket, for steel and copper of the same nominal size.

Are replacement gaskets available?

Yes. Style 65 and Style 90 gaskets, nuts, retainer cups and insulators are listed separately.

What warranty applies?

12 months from the date of purchase under Dresser published warranty terms.

Can I get a submittal?

Yes. Email sales@watermainsupply.com with the part numbers.

Ready to Size Your Compression Fitting?

Send the pipe OD, material and line content. We confirm the Dresser part number and quote the same day.

1-888.510.4036Email SalesRequest a Quote
Technical data on this page is taken from Dresser product literature and is subject to change by the manufacturer. Confirm against the current installation manual before specifying. Dresser, Tap-N-Valve are trademarks of Dresser, LLC, used here for product identification only. Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.