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Dresser Gas Repair Couplings | Fittings
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Dresser Gasket | 27 Buna S | Pinned Armored
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Dresser Style 96 Fabricated Steel Split Sleeves
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Dresser Gas Repair Couplings | Fittings
Dresser Utility Solutions › Gas Distribution Products
Authorized Dresser Distributor
Dresser Gas Distribution ProductsCouplings, Fittings, Valves, Sleeves & Hot Tap Solutions
The complete Dresser gas distribution catalog — PE-to-steel transitions, meter set valves, repair sleeves, and LS-2 hot tap fittings. Engineered for natural gas mains, distribution lines, and service connections at 125 to 740 PSIG.
740 PSIG
Max Working Pressure
19+
Product Styles Stocked
135 yrs
Dresser Pipeline Heritage
Why Dresser for Gas Distribution
Dresser Pipeline Solutions has supplied the gas distribution industry for over 135 years. Every product in this catalog is engineered for code-compliant installation on natural gas mains, services, and meter sets — with full traceability and DOT-recognized compliance.
DOT
192.281(e) Compliant
Style 401, 501, 502, 575, and 711 product lines are fully compliant to DOT 192.281(e) and ASTM F1948 / F1924 / F1973 Category 1 specifications.
F2897
Full Traceability
ASTM F2897 encoding is bar-coded and stamped on every fitting. Heat code traceability is maintained on the steel tailpiece adjacent to the weld prep.
PE+Steel
Universal Material Range
Joins steel, polyethylene (MDPE 2708, HDPE 4710), copper, and cast iron in any combination. One product family covers the entire distribution system.
ALCLAD™
Fusion-Bonded Coating
Steel components carry Dresser ALCLAD fusion-bonded epoxy coating with 2 in layback for field welding. Standard weld-prep bevel: 30–37.5 degrees.
125 – 740
PSIG Range
From low-pressure CTS service taps at 125 PSIG up to LS-2 Class 300 spherical tee fittings rated 740 PSIG B31.8 DF=0.72 for transmission applications.
What Watermain Supply Provides
Authorized Dresser distribution out of Houston, Texas — with engineering support, accurate quotes, and direct factory shipment for the entire Dresser gas product line.
Our Dresser Gas Service Includes
- Authorized Dresser distributor. Watermain Supply is an authorized Dresser Utility Solutions distributor — you get authentic Dresser product, factory warranty, and full ASTM F2897 traceability documentation on every order.
- Quote turnaround within 24 hours. Send the pipe size, material (steel, MDPE 2708, HDPE 4710, CIP), and pressure rating — you receive a configured part number and pricing the next business day.
- Configuration support. CTS vs IPS sizing, SDR 10 vs SDR 11 selection, conductive vs insulating couplings, gasket grade selection, and PE cell classification — we'll spec the correct part the first time.
- Houston-based, Gulf Coast focused. Serving Texas LDCs, contractors, and municipal gas utilities across Texas, Louisiana, Oklahoma, Arkansas, and New Mexico with local technical support.
- Factory-direct or stocked. High-velocity SKUs ship from inventory; specialty configurations ship factory-direct from Bradford, PA. Lead times confirmed at quote.
- Submittal documentation. ASTM compliance certificates, dimensional drawings, material specifications, and DOT 192.281(e) documentation supplied with every quote.
Dresser Gas Product Families
Complete Dresser gas distribution catalog — organized by application. Pipe joining, meter set valves, repair sleeves, and hot tap / line stop fittings.
Pipe Joining — Compression & Transition Fittings
Style 401
All-Plastic Compression End Fittings
Compression couplings and line caps for sealing and restraining polyethylene tubing. PE to PE and PE to copper. Includes pipe insert. Fully DOT 192.281(e) / ASTM F1924 Category 1 compliant.
Sizes1/2 – 1-1/4 in CTS
Pressure125 PSIG
MaterialsPE x PE, PE x Copper
ConfigurationsCouplings, Line Caps
Style 501
Transition — Steel to PE Service
Compression-end transition fittings for joining steel pipe to CTS polyethylene tubing. Couplings, ells, tees, male adapters, and Tap-N-Valve tees. Includes pipe insert. ASTM F1948 Category 1 compliant.
Sizes1/2 – 1-1/4 in
Pressure125 PSIG
MaterialsSteel x PE
ConfigurationsCplg, Ell, Tee, Adapter, Tap-N-Valve
Style 502
Service Head Adapter — Steel x PE
Service head adapters for sealing and restraining the connection between steel service risers and polyethylene service piping. E-coated finish standard. ASTM F1948 Category 1 compliant.
Sizes3/4 – 1-1/2 in
Pressure150 PSIG
MaterialsSteel x PE
FinishE-Coated
Style 711
Sealing & Restraining Bolted Coupling
The flagship gas-distribution coupling. Bolted, fully restrained, conductive or insulating. Joins steel, PE, and cast iron in any combination. The proven gripping tooth profile is the basis for the Style 721 transition design.
Sizes1-1/4 – 12 in
MaterialsPE x PE, Steel x PE, Steel x Steel, Cast x PE / Steel
VariantsConductive & Insulating
IncludesLine Cap Plug Kit Available
Style 721
Mainline Steel-to-PE Transition
Monolithic-body mainline transition fitting for steel to MDPE 2708 or HDPE 4710. ASTM F1973 Category 1 qualified. ALCLAD fusion-bonded epoxy coated with 2 in weld layback. Factory-beveled weld prep at 30–37.5 degrees.
Sizes3, 4, 6, 8, 12 in
Pressure125 PSIG
PE SpecSDR 11 (HD & MD)
StandardASTM F1973 Cat 1
Meter Valves & Strainers
Style 175
Meter Curb Valve — Universal 90
Curb valves with Universal 90 compression ends for steel and IPS polyethylene. Available in 360-degree turn or 90-degree open-left configurations. Cut-in variant rated 175 PSIG. Threaded FIPS x FIPS GTO version available.
Sizes3/4 – 2 in
Pressure150 – 175 PSIG
Operations360° Turn, 90° Open-Left
FinishE-Coat or Plastisol
Style 275
Threaded Meter Valve — FIPS
Threaded FIPS meter valves with lock wing for residential and commercial gas meter set installations. Available with insulated union variant for cathodic isolation between the service and the customer-side meter set.
Sizes3/4 – 1-1/4 in
Pressure175 PSIG
ConnectionFIPS Threaded
VariantStd or Insulated Union
Style 575
Angle Ball Valve — Compression Tee
Compression-end angle ball valves with MIPT inlet x compression branch for cast iron and ductile iron mains feeding PE service tubing. Includes PE pipe insert. Plastisol-finish housing. ASTM F1948 Category 1 compliant.
Sizes1-1/4, 1-1/2 in
Pressure125 PSIG
MaterialsCIP / DIP x PE
IncludesPE Insert
Style 350 Ultraseal
Flanged or Weld-End Meter Valve
2 in flanged or weld-end meter valves for commercial and industrial gas meter set installations. Furnished with lock plate; 2 in operating nut variant available. Ideal for upstream of Style 351 strainer and rotary measurement equipment.
Size2 in
Pressure175 / 275 PSIG
ConnectionFlanged or Weld-End
IncludesLock Plate
Style 351
Pipeline Tee Strainer — 100 Mesh
Tee-body inline strainers protecting diaphragm and rotary meters from particulate damage. 100-mesh stainless screen. Flanged ends rated 175 PSIG; weld ends rated 275 PSIG. Replacement 20-mesh screens available.
Sizes2, 3, 4, 6 in
Pressure175 / 275 PSIG
Mesh100 Mesh Std / 20 Mesh Avail
ConnectionFlanged or Weld
LS-2 Hot Tap & Line Stop Fittings
LS-2 Weld Fittings
Threaded Hot Tap — Class 150
Threaded weld-on hot tap fittings with plug and cap for steel gas mains. Includes side outlet variants for branch service connections. The smallest fitting in the LS-2 line — ideal for service tap-ins and small-bore line stops.
Sizes1-1/4 – 3 in
Pressure285 PSIG
MaterialSteel
ConfigurationsThreaded Plug, Threaded Cap, Side Outlet
LS-2 Spherical Tee
Class 150 / Class 300 Flanged Hot Tap
Flanged spherical tee fittings — the workhorse of the LS-2 line for hot taps and line stops on transmission and high-pressure distribution mains. Class 150 rated 285 PSIG; Class 300 rated 740 PSIG (B31.8, DF=0.72) for all class locations.
Sizes2, 3 (Threaded) · 4 – 12 in (Flanged)
Pressure285 PSIG (CL150) · 740 PSIG (CL300)
MaterialCarbon Steel
VariantsStandard or Reduced Branch
LS-2 Split Sleeve Fittings
Encapsulating Hot Tap Fittings
Full-encapsulation split sleeve fittings for retrofit hot taps where pipe cannot be welded directly. Available with or without side outlet for branch service. Class 150 rated 285 PSIG; Class 300 rated 740 PSIG.
Sizes2 – 12 in
Pressure285 PSIG (CL150) · 740 PSIG (CL300)
MaterialCarbon Steel
ConfigurationsStd · Side Outlet
LS-2 Completion Plugs
Permanent Hot Tap Closure
Permanent completion plugs for closing LS-2 spherical tee fittings after hot tap or line stop operations. Threaded engagement; pressure-rated to match the parent fitting. Required to seal the fitting permanently after operations are complete.
Sizes1-1/4 – 12 in
Pressure285 PSIG
MaterialCarbon Steel
TypeThreaded Permanent Plug
Repair & Reinforcing Sleeves
Style 50
Cast Iron Repair / Hot Tap Sleeve
Dual-purpose split sleeve for cast iron pipe — emergency repair OR hot tap. Each sleeve accommodates multiple branch sizes for inventory reduction. Custom-fabricated branches available with threaded, flanged, or plain ends.
Sizes6 – 24 in (up to 48 in custom)
Pressure (MAOP)100 PSI
MaterialSteel (insulated from main)
ApplicationCIP Mains
Style 54 / 73
Cast Split Sleeves — Steel Pipe
Cast split sleeves for repair of defective screw collars, butt joints, and double-bell welded joints on small-diameter steel gas pipe. Vented for under-pressure installation. Each sleeve air-tested at 60 PSI and hydro-tested to 1000 PSI before shipment.
Sizes2, 3, 4 in (54) · 2 in (73)
Pressure500 PSIG
MaterialCast Iron
UseRepair, Vented, Encapsulating
Style 96
Fabricated Steel Repair Sleeve
Expanded-body fabricated steel split sleeves for high-pressure transmission repairs. ANSI 150 (500 PSI) standard; available up to 1500 PSI on application. Grade 29 gaskets, ASTM A36 body halves, ALCLAD fusion-bonded epoxy optional.
Sizes6 – 24 in (and larger)
Pressure500 – 1500 PSIG
MaterialASTM A36 Steel
Class RatingsANSI 150, 300, 600
Change-Out Kits
Style 965
Diaphragm Meter Change-Out Kits
Pre-engineered conversion kits for changing out diaphragm meters — American, Rockwell, AL, and Equimeter platforms — to ROOTS rotary measurement. Type I, II, and III kits cover the common conversion paths from 8C-3M through 16M sized meters.
Type I10 in / 11 in centers, threaded or flanged
Type IIAL / Rockwell / American to 2M
Type III8C-3M, 5M, 7M, 11M-16M kits
NoteMeters not included
Pipe Material & Pressure Selection Guide
Match the application to the right Dresser product family. Pressure ratings shown are maximum working pressures — consult factory for hydrostatic test pressures and class location adjustments per DOT 192.105.
| Application | Material Combo | Recommended Style | Pressure Range | Size Range |
|---|---|---|---|---|
| CTS Service Tubing — sealing & restraint | PE x PE, PE x Copper | Style 401 | 125 PSIG | 1/2 – 1-1/4 in |
| CTS Service Tubing — transition | Steel x PE | Style 501 | 125 PSIG | 1/2 – 1-1/4 in |
| Service Riser — meter set head | Steel x PE | Style 502 | 150 PSIG | 3/4 – 1-1/2 in |
| Distribution Main — mechanical coupling | Steel x Steel, Steel x PE, Cast x PE | Style 711 | To 175 PSIG | 1-1/4 – 12 in |
| Distribution Main — mainline transition | Steel x PE (SDR 11) | Style 721 | 125 PSIG | 3 – 12 in |
| Meter Set — residential / commercial curb | Steel, IPS PE | Style 175 / 275 | 150 – 175 PSIG | 3/4 – 2 in |
| Meter Set — CIP main service | CIP / DIP x PE | Style 575 | 125 PSIG | 1-1/4, 1-1/2 in |
| Meter Set — commercial 2 in flanged / weld | Steel | Style 350 Ultraseal | 175 / 275 PSIG | 2 in |
| Meter Set — particulate protection | Steel | Style 351 | 175 / 275 PSIG | 2 – 6 in |
| Hot Tap — small bore service tap | Steel | LS-2 Weld Fitting | 285 PSIG | 1-1/4 – 3 in |
| Hot Tap / Line Stop — flanged | Steel | LS-2 Spherical Tee CL150 / CL300 | 285 / 740 PSIG | 2 – 12 in |
| Hot Tap — encapsulating retrofit | Steel | LS-2 Split Sleeve Fitting | 285 / 740 PSIG | 2 – 12 in |
| Pipe Repair — cast iron mains | CIP | Style 50 | 100 PSI MAOP | 6 – 24 in |
| Pipe Repair — small bore steel | Steel | Style 54 / 73 | 500 PSIG | 2, 3, 4 in |
| Pipe Repair — transmission steel | Steel | Style 96 (ANSI 150–600) | 500 – 1500 PSIG | 6 – 24 in |
Steel-to-PE Transition: Style 721 Specifications
Mainline transition fittings to ASTM F1973 Category 1, fully traceable per ASTM F2897. Specify pipe size, PE cell classification, dimension ratio, approved extruder, and steel pipe wall thickness when ordering.
| Nom. Size (in) | Steel Length Min (in) | PE Length Min (in) | Overall Length (in) | SCH 40 Wall (in) | Shipping Wt (lbs) | HD Part Number | MD Part Number |
|---|---|---|---|---|---|---|---|
| 3 | 9 | 12 | 27 | 0.216 | 12 | 072103PE110H | 072103PE110M |
| 4 | 9 | 12 | 27 | 0.237 | 18 | 072104PE110H | 072104PE110M |
| 6 | 9 | 18 | 33 | 0.280 | 35 | 072106PE110H | 072106PE110M |
| 8 | 9 | 24 | 42 | 0.322 | 70 | 072108PE110H | 072108PE110M |
| 12 | 9 | 24 | 46 | 0.375 | 155 | 072112PE110H | 072112PE110M |
Required Order Data
Pipe size · PE cell classification (2708 or 4710) · Dimension ratio (SDR 11 std) · Approved extruder for PE pipe · Steel wall thickness if non-SCH 40 · Special configurations.
Coating & Weld Prep
ALCLAD fusion-bonded epoxy with 2 in layback for field welding. Factory-beveled weld prep at industry-standard 30 to 37.5 degrees. ASTM F2897 bar code and alphanumeric data on the fitting.
Traceability
Heat code stamped on the steel tailpiece adjacent to the weld prep ensures 100% traceability of pressure-containing metallic content. PE traceability label duplicates the print line encoding.
Standards & Compliance
Every Dresser gas product carries the documentation and certification operators and inspectors need for code compliance.
DOT 192.281(e)
Plastic Pipe Joining
Pipeline safety regulation governing joining of plastic pipe in gas distribution. Style 401, 501, 502, 575, and 711 product lines fully comply.
ASTM F1924
PE Compression Couplings
Standard for plastic mechanical fittings used on outside-diameter-controlled polyethylene pipe and tubing. Style 401 Category 1 compliant.
ASTM F1948
Metallic Mechanical Fittings
Standard for metallic mechanical fittings for use on outside-diameter-controlled PE and PA gas distribution pipe. Style 501, 502, 575, 711 Cat 1.
ASTM F1973
Anodeless Risers / Transitions
Factory-assembled steel-to-PE transition fittings standard. Style 721 fully qualified to F1973 Category 1 with monolithic body design.
ASTM F2897
Traceability Encoding
Standard for traceability information embedded in plastic gas pipe and fittings. Bar code and alphanumeric markings on every Style 721 fitting.
B31.8 / DF=0.72
Gas Transmission & Distribution
ASME piping code governing gas transmission and distribution. LS-2 Class 300 spherical tee fittings rated 740 PSIG for all class locations.
Frequently Asked Questions
Common questions about specifying and sourcing Dresser gas distribution products through Watermain Supply.
What's the difference between Style 711 and Style 721?
Style 711 is a bolted mechanical coupling used for joining or repairing pipe in the field — same-size or transition between steel, PE, and cast iron in any combination. Style 721 is a mainline transition fitting only — a monolithic-body factory assembly that connects steel pipe to SDR 11 polyethylene mains in 3 in through 12 in sizes. The Style 721 gripping tooth profile is derived from the proven Style 711 design but the product is purpose-built for permanent steel-to-PE transitions and qualifies to ASTM F1973 Category 1.
Do I need conductive or insulating couplings?
Conductive couplings maintain electrical continuity along the pipeline — required when cathodic protection extends through the joint and the upstream/downstream pipe is the same material requiring a common CP system. Insulating couplings break electrical continuity — required at transition points between dissimilar materials (steel to cast iron, steel to copper) or wherever you need to isolate cathodic protection zones. Style 711 is available in both. If unsure, ask your engineer or call us with the system context.
How do I specify a Style 721 transition fitting?
You need six pieces of information: (1) nominal pipe size (3, 4, 6, 8, or 12 in); (2) PE cell classification — medium density 2708 or high density 4710; (3) dimension ratio (SDR 11 is standard); (4) approved extruder for the PE pipe; (5) steel pipe wall thickness if not standard SCH 40; (6) any special configuration requirements. The PE cell classification and SDR drive whether you order the H (HDPE) or M (MDPE) part number suffix.
Can I hot tap a cast iron main with LS-2 fittings?
LS-2 weld fittings are designed for steel pipe. For cast iron mains, the correct product is the Style 50 split repair sleeve, which is dual-purpose — emergency repair OR hot tap base. Style 50 sleeves can be ordered with custom branch service outlets up to 16 in IPS branch on a 24 in CIP main, and they integrate with LS-2 flange fittings for the actual hot tap operation. MAOP for the Style 50 is 100 PSI standard; higher pressures available on application.
What's the difference between LS-2 Class 150 and Class 300?
Class designation refers to the ANSI flange rating and the corresponding pressure rating. Class 150 LS-2 fittings are rated 285 PSIG and are appropriate for most gas distribution applications. Class 300 LS-2 fittings are rated 740 PSIG (per B31.8 with design factor 0.72) for all class locations — required for high-pressure transmission, fully-rated transmission service, and any application above 285 PSIG. Class 300 fittings have heavier wall thickness and substantially higher unit cost.
Are Dresser gas products certified for potable water?
No. The Dresser gas product line covered on this page (Style 401, 501, 502, 711, 721, LS-2 fittings, Style 175 / 275 / 575 / 350 / 351, and the Style 50 / 54 / 73 / 96 / 965 series) is engineered specifically for natural gas distribution. For potable water applications, see our Dresser Water collection — Style 38, 40, 62, 128, 167, and related water products carry NSF 61 / 372 certification. Don't substitute gas-line products into water service.
What's the lead time on Dresser gas products?
High-velocity items (Style 401, 501, 502, 711, 175 / 275 in common sizes) typically ship within 1–2 weeks. Style 721 transition fittings, larger Style 711 sizes, and LS-2 hot tap fittings ship factory-direct from Bradford, PA — lead times are typically 3–6 weeks but vary with current production. Custom configurations (Style 50 with branch outlet, large Style 96 sleeves) run 6–10 weeks. We confirm actual lead time on every quote.
Why don't you publish pricing on the website?
Dresser gas products are highly configured. A Style 711 coupling has dozens of permutations across material combinations, gasket grades, conductive vs. insulating, and pipe ODs. Style 175 curb valves alone come in 360-degree vs 90-degree, anode connector vs standard, e-coat vs plastisol, and four material combinations — that's over 30 SKUs in 1-1/4 in alone. Publishing one price would mislead more than help. Send us your pipe size, material, pressure, and configuration — you'll have accurate pricing within 24 hours.
What geographic area do you serve?
Watermain Supply is based in Houston, Texas. We primarily serve Texas, Louisiana, Oklahoma, Arkansas, and New Mexico LDCs and gas-line contractors. We can quote and ship throughout North America — technical support and submittal turnaround are fastest for Gulf Coast projects.
Are you an authorized Dresser distributor?
Yes. Watermain Supply (a DBA of E4 Industrial LLC) is an authorized Dresser Utility Solutions distributor. All product is authentic Dresser, ships with full ASTM F2897 traceability documentation where applicable, and carries the standard Dresser factory warranty.
Ready to Spec Your Dresser Gas Order?
Send us your pipe size, material, pressure rating, and configuration — you'll have a configured part number and pricing within 24 hours.
281.664.8000Dresser®, ALCLAD™, ROOTS®, Ultraseal™, Tap-N-Valve™, and POSI-HOLD® are trademarks of Dresser, LLC, a subsidiary of Baker Hughes, and are used under license. Watermain Supply is a DBA of E4 Industrial LLC, an authorized Dresser Utility Solutions distributor based in Houston, Texas.
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