Smith-Blair Flanged Coupling Adapters

Smith-Blair flanged coupling adapters join plain-end pipe to a flanged valve, meter, pump or fitting without welding or threading. Restrained styles hold the pipe at the joint: Flange-Lock 911 for ductile iron and steel, 920 for PVC, the 923 sleeve, and the EZ-W. Standard styles seal and need the pipe anchored: 912 cast, 913 steel, 914 reducing and 921 Top Bolt wide range. Sizes run 2 to 48 in, at 150 to 250 PSI. Order by the measured pipe OD; send it with the pipe material and flange size and we confirm the part number the same day. Call 1-888.510.4036 or email sales@watermainsupply.com.

Smith-Blair Flanged Coupling Adapters

Smith-Blair · Flanged Coupling Adapters · 2 in to 48 in

Flanged Coupling Adapters Restrained & Standard

Join plain-end pipe to a flanged valve, meter, pump or fitting with no welding, no threading and no fabricated spool. Restrained Flange-Lock and EZ-W adapters that hold the pipe, standard steel, cast and wide-range FCAs that seal it, and reducing builds that change size at the flange. Eight Smith-Blair styles for ductile iron, steel, PVC, cast iron, AC and HDPE pipe.

Smith-Blair Style 911 Flange-Lock restrained flanged coupling adapter

8 Styles911 · 912 · 913 · 914 · 920 · 921 · 923 · EZ-W

2–48 inNominal Size

150–250 PSIWorking Pressure

4 RestrainedStyles That Hold the Pipe

NSF/ANSI 61Potable Water Gaskets

A flanged coupling adapter (FCA) is a plain end x flange fitting. One end bolts to the companion flange of a valve, meter, pump or fitting; the other slides over plain-end pipe and seals on its outside diameter with a compressed gasket. It replaces a welded or threaded flange, takes up small gaps and misalignment, and lets a flanged valve or meter be pulled and reset without cutting pipe. The decision that matters most is whether the adapter must also restrain the pipe against thrust, and the second is the measured pipe OD.

We supply the full Smith-Blair FCA range, Flange-Lock 911, 920 and 923, EZ-W, 912, 913, 914 and 921, every listed build with its part number. We also carry the Dresser Style 128 and TX3, compared further down this page. Send us the measured pipe OD, the pipe material, the flange size and the working pressure, and we confirm the style and part number with a same-day quote. Call 1-888.510.4036 or email sales@watermainsupply.com. Genuine Smith-Blair equipment, factory-new in original packaging — sold and supported by Watermain Supply, an independent industrial supplier.

Will It Work for Me?

Answered from Smith-Blair published data.

Warranty

12 months from the date of purchase, under Smith-Blair's published warranty terms.

Reliability

Fusion-bonded epoxy bodies (Smith-Blair Flexi-Coat per AWWA C213), Nitrile gaskets certified to NSF/ANSI 61 and 372 on the 912, 913, 914 and 921, and 304 or 316 stainless hardware on most styles for buried and corrosive service.

Fit

Working pressure runs 150 PSI (911, 913, 914, 923) to 175 PSI (920 through 12 in, 921, EZW-F) and 250 PSI (912). A standard FCA seals but does not restrain: anchor the pipe, or choose a restrained style.

Size It Now

Measure the pipe OD with a pi tape or caliper and email it with the pipe material and flange size. We match it to the part number the same day, or call 1-888.510.4036.

Email Your Pipe ODPipe OD, material, flange size and pressure: style and part number back the same day

Restrained or Standard?

Line pressure pushes the pipe out of any joint at a valve, dead end or change of direction. Something has to hold it.

Restrained FCA

Seals and grips the pipe, so the joint itself resists pull-out.
Flange-Lock 911: ductile iron and steel pipe, black Cam-Lock wedges, 3–48 in.
Flange-Lock 920: PVC pipe, red Cam-Lock wedges, 3–36 in, SDR 26 or heavier.
Flange-Lock 923: the adapter body alone, for a Cam-Lock 111 or 120 gland of your choice.
EZ-W FCA: steel, ductile iron, PVC and HDPE, gripping band, 2–12 in.

Standard FCA

Seals on the pipe OD; the pipe is held by thrust blocks, tie rods or a restrained pipeline.
912 cast ductile iron, 250 PSI, 3–12 in; 913 fabricated steel, 3–24 in.
914 reducing: pipe of one size to a flange of another.
921 Top Bolt: wide OD range, up to 1.31 in per size, 2–12 in.

Quick rule: if there is no thrust block, no tie rods and no restrained pipe behind the joint, buy a restrained FCA: 911 on ductile iron or steel, 920 on PVC, EZ-W where one adapter must fit steel, iron, PVC or HDPE. Anchor studs on the 912 and 913 hold the pipe end too, at the thrust ratings Smith-Blair publishes per OD.

The Lines

Two families. Every listing carries the manufacturer part number on each build.

Smith-Blair Style 920 Flange-Lock restrained flanged coupling adapter for PVC

Restrained FCAs

Smith-Blair Flange-Lock 911 · 920 · 923 and EZ-W

2–48 inNominal size

150–175 PSIClass D flange

To 5°Deflection per gland

Flange x MJ911 · 920 · 923

Flange-Lock puts a Cam-Lock wedge gland on an MJ end: the wedges set against the pipe and the breakaway nuts twist off when they are seated, so the joint is restrained the day it is made. The pipe passes completely through the body, which makes large sizes easier to set.

911: 300 lb flanges built to order, rated to 300 PSI on 3–16 in ductile iron
920 wide-range builds (-100) fit both PVC ODs, 4–12 in
EZ-W: stab fit, no disassembly, low-alloy or 304 stainless bolts

Best forValve and hydrant connections with no room or permission for a thrust block.

View Flange-Lock 911

Smith-Blair Style 913 steel flanged coupling adapter

Smith-Blair Standard FCAs

912 cast · 913 steel · 914 reducing · 921 top bolt

2–24 inFlange size

150–250 PSIWorking pressure

To 4°Deflection

NSF/ANSI 61, 372Nitrile gasket

The 912 is cast ductile iron with color-coded followers and an OMNI-compatible gasket; the 913 is fabricated steel to 24 in; the 914 reduces from pipe to a smaller or larger flange in one piece; the 921 covers up to 1.31 in of OD per size with one top bolt and a removable inner gasket.

Galvanized, 304 or 316 stainless, or ductile cross-bolt hardware (912)
Anchor-stud builds on 912 and 913, 3–12 in
921 seals copper, AC and HDPE (with stiffeners) as well as iron, steel and PVC

Best forPump, meter and valve connections where the pipe is already anchored.

View Style 913

Size by Pipe OD

An FCA is ordered by the measured outside diameter of the pipe, not its nominal size. A 6 in PVC pipe can be 6.63 in or 6.90 in OD depending on its standard.

Nominal	Steel and IPS PVC OD (in)	Listed styles that fit	Ductile iron and C900 PVC OD (in)	Listed styles that fit
2 in	2.38	EZW-F / 921 · Dresser 128 · TX3	—	—
3 in	3.50	920 · 923 / 912 · 913 · 921 · Dresser 128 · TX3	3.96	911 · 923 / 912 · 921 · TX3
4 in	4.50	920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3	4.80	911 · 920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3
6 in	6.63	920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3	6.90	911 · 920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3
8 in	8.63	920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3	9.05	911 · 920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3
10 in	10.75	920 · 923 / 912 · 913 · 921 · Dresser 128 · TX3	11.10	911 · 920 · 923 / 912 · 913 · 921 · Dresser 128 · TX3
12 in	12.75	920 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3	13.20	911 · 920 · 923 · EZW-F / 912 · 913 · 921 · Dresser 128 · TX3
14 in	14.00	913 · Dresser 128	15.30	911 · 920 · 923 / 913 · Dresser 128
16 in	16.00	913 · Dresser 128	17.40	911 · 920 · 923 / 913 · Dresser 128
18 in	18.00	913 · Dresser 128	19.50	911 · 920 · 923 / 913 · Dresser 128
20 in	20.00	913 · Dresser 128	21.60	911 · 920 · 923 / 913 · Dresser 128
24 in	24.00	913 · Dresser 128	25.80	911 · 920 · 923 / 913 · Dresser 128
30 in	30.00	Dresser 128	32.00	911 · 920 · 923 / Dresser 128
36 in	36.00	Dresser 128	38.30	911 · 920 · 923 / Dresser 128
42 in	—	—	44.50	911 · 923
48 in	—	—	50.80	911 · 923

Red = restrained. Dresser 128 and TX3 are our Dresser listings, compared below. 911 is listed at ductile iron OD and takes ductile iron and steel pipe only; 920 is for PVC only; 923 is a body that needs a Cam-Lock 111 (iron, steel) or 120 (PVC) gland. Steel pipe at IPS OD can be restrained with EZ-W, or with a 923 and Cam-Lock 111 through 12 in. For a pipe-to-flange size change, the 914 coupling end covers 3.44 to 32.09 in OD to a 3–24 in flange. Old cast iron and AC pipe run to other ODs: the 912, 913, 921, TX3 and Dresser 128 CIP builds cover many of them.

How to measure: wrap a pi tape around clean pipe where the gasket will sit, or measure the circumference with a tape and divide by 3.1416. Take two readings 90° apart on PVC and old cast iron, which can be out of round. Example: 8 in C900 PVC reads 9.05 in OD, so it takes a 920 (restrained), or a standard 912 (8.54–9.11), 913 (8.99–9.10), 921 (8.54–9.85) or TX3 (8.54–9.84).

Compare All Eight

The figures Smith-Blair publishes for the standard listed builds.

Style	Restrains pipe	Pipe	Sizes	Working pressure	Body and gasket	Hardware
SB 911	Yes, Cam-Lock	Ductile iron; steel 3–12 in	3–48 in	150 PSI; 300 lb flange to order	Steel, flange x MJ; SBR MJ gasket	HSLA T-bolts
SB 920	Yes, Cam-Lock	PVC, SDR 26 or heavier	3–36 in	175 PSI to 12 in; 150 to 30 in; 125 at 36 in	Steel, flange x MJ; SBR or Multi-Seal	HSLA T-bolts
SB 923	With gland	DI, steel, PVC	3–48 in	150 PSI; 125 at 36 in PVC	Steel sleeve, body only	Ordered with gland
SB EZ-W	Yes, gripping band	Steel, DI, PVC, HDPE	2–12 in	175 PSI	Steel; SBR gasket	Low-alloy or 304 SS
SB 912	Anchor studs optional	Steel, DI, CI, AC, PVC	3–12 in	250 PSI	Cast DI; Nitrile, NSF 61/372	Galv, 304, 316 or cross bolts
SB 913	Anchor studs optional	Steel, SS, DI, CI, AC, PVC, HDPE	3–24 in	150 PSI	Steel; Nitrile, NSF 61/372	Low-alloy, 304 or 316
SB 914	No	Steel, SS, DI, AC, PVC, HDPE	3.44–32.09 in OD to 3–24 in flange	150 PSI	Steel; Nitrile, NSF 61/372	Low-alloy
SB 921	No	Steel, SS, DI, AC, PVC, copper, HDPE	2–12 in	175 PSI	Steel; removable Nitrile inner gasket	304 SS top bolt

Where Smith-Blair documents disagree on a rating, the lower figure is shown. Allowable pressure in service also depends on the pipe, its rating and the companion flange.

Smith-Blair vs Dresser

We also carry two Dresser adapters. These are the closest head-to-head matches.

Steel FCA: Smith-Blair 913 vs Dresser 128

Spec	Smith-Blair 913	Dresser 128
Sizes	3–24 in, three OD ranges per size	2–36 in, steel and CI/DI builds
Working pressure	150 PSI	150 PSI MAOP, 4–24 in
Flange	ANSI 150 flat face 3–5 in; AWWA C207 Class D 6 in up	AWWA C207 Class D; ANSI 150 Alclad on 2–12 in steel
Gasket	Nitrile, NSF/ANSI 61 and 372	Grade 27 Buna-S wedge gasket
Hardware	Low-alloy, 304 or 316 stainless on every size	AWWA C111 black E-coat; 316 SS at 12 and 24 in CIP
Pipe hold	Anchor-stud builds, 3–12 in	Lock-pin build on request

Verdict: the 913 wins on stainless hardware choice, published NSF/ANSI 61 and 372 certification and listed anchor-stud builds. The Dresser 128 wins on range: 2 in and 30–36 in, and dedicated cast iron OD builds.

Wide-range FCA: Smith-Blair 921 vs Dresser TX3

Spec	Smith-Blair 921 Top Bolt	Dresser TX3
Sizes	2–12 in, seven parts	2–12 in plus 10 and 12 in oversize, nine parts
OD range, 6 in	6.56–7.60 in	6.56–7.65 in
OD range, 12 in	12.62–13.67 in	12.62–13.66 in; OS to 14.45 in
Working pressure	175 PSI published	Per product label
Install	Single top bolt; removable inner gasket for the upper range	Drawbolts; dual-layer wide-range gasket

Verdict: the 921 wins on its published 175 PSI rating, one-bolt installation and copper and HDPE in its pipe list. The TX3 wins on old oversize cast iron, with 10 and 12 in OS builds to 14.45 in OD.

FCA Cross-Reference

From Smith-Blair's own cross-reference. Styles are matched by function, not by dimension: confirm the OD range and flange of the one you are replacing.

Standard FCA	Smith-Blair	Dresser	Ford	Romac	JCM	PowerSeal
Cast	912	127	FFCA	FCA501	301	3521
Steel	913	128	FCA	FC400	303	3528
Steel reducing	914	—	—	FC400	304 / 306	—
Steel wide range	921	—	—	—	—	—
Flanged meter adapter	926	131	—	—	—	—
Restraint plate	907	—	—	490	—	—

Restrained FCA	Smith-Blair	EBAA	Ford	Romac	SIGMA	Star
Ductile iron pipe to flange	911	2100	RFAD	RFCA	SFA	3200
PVC pipe to flange	920	2100	RFAP	PVC RFCA	SFA	4200
Sleeve only	923	—	—	—	—	—
Steel restrained FCA	EZ-W	—	—	—	—	—

Source: Smith-Blair Water Products Price Book, 2025, competitor cross-reference. Brand and model names are used for identification only. Replacing one of these on an existing job? Email the model and the pipe OD and we match it.

Selection Guide

Pipe, restraint and the space you have to work in.

Job	Pipe	Choose	Notes
Valve or hydrant tee, no thrust block	Ductile iron	911	Black wedges; 300 lb flange to order for higher pressure
Valve or hydrant tee, no thrust block	C900 or D2241 PVC	920	Red wedges; SDR 26 or heavier; -100 builds take both ODs
Restrained, your own gland	DI, steel, PVC	923 + Cam-Lock 111 or 120	Body only; add gland, MJ gasket, T-bolts
Restrained, steel or HDPE	IPS or DIPS steel, HDPE	EZ-W FCA	Stiffener required on PE pipe
Pump or meter set, pipe anchored	Any, 3–12 in	912	250 PSI; one body per size, follower by OD
Larger anchored line	Steel, iron, PVC to 24 in	913	304 or 316 hardware for buried service
Pipe and flange differ in size	Any	914	Replaces a reducer plus an FCA; flange-end bolts not included
OD unknown or between standards	Any, incl. copper	921 or TX3	Wide range; TX3 OS for oversize cast iron
30–36 in steel pipe	Steel	Dresser 128	Only listed steel FCA past 24 in

Key Terms

What the datasheets assume you know.

Cam-Lock Wedges

Single-tooth ductile iron wedges in the 911 and 920 glands. Black for iron and steel, red for PVC: never swap them. The breakaway nuts twist off once every wedge is set.

Anchor Studs

Factory studs on the 912 and 913 that pass through holes drilled in the pipe wall, holding the pipe end at a published thrust rating. The pipe cannot be moved afterward.

AWWA C207 Class D

The steel ring flange on most FCAs, drilled to ANSI 150 lb so it bolts to ANSI 125 and 150 lb companion flanges.

Wide Range

One part that seals across a span of ODs: up to 1.31 in on the 921, for pipe of unknown or mixed standard.

Pass-Through Body

Flange-Lock bodies let the pipe pass all the way through, so a large adapter can be slid back and set without pulling pipe (not with raised-face flanges).

Flexi-Coat

Smith-Blair's fusion-bonded epoxy, applied per AWWA C213 inside and out, for buried and wet service.

Restraint Hardware

For flanged connections that need tie rods across the joint.

Style 907 Restraint Plate

Carbon steel, 3-hole, 4–48 in

Smith-Blair Style 101 tie rod and nut set

Style 101 Tie Rods

Alloy steel rod and nut sets, 5/8–1-1/2 in

Smith-Blair asks that 907 plates be checked before use with a 912; email us the application. Flange gaskets and flange bolts for the companion flange are not part of an FCA kit: we quote them with the adapter.

Why Watermain Supply

Engineering-Led Sizing

We match your measured OD, pipe material and pressure to the exact part number before anything ships.

Two Brands, Honest Advice

We carry Smith-Blair and Dresser. If a style is not the right fit for your pipe, we will say so and name the one that is.

Part Numbers on Every Build

Each variant carries the manufacturer catalog number, so your PO, submittal and receiving all match.

Account Terms

Account terms for contractors, utilities and municipalities.

Submittals and Parts

Datasheets, specs and installation instructions on every listing; submittal packages, gaskets, studs and tie rods on request.

Houston and the Gulf Coast

Based in Houston, serving utilities and contractors across Texas and the Gulf Coast,.

Frequently Asked Questions

What is a flanged coupling adapter?

A plain end x flange fitting: one end bolts to a flanged valve, meter, pump or fitting, the other slides over plain-end pipe and seals on its OD with a compressed gasket. It replaces a welded or threaded flange and lets the flanged item be removed without cutting pipe.

Do I need a restrained FCA?

If nothing else holds the pipe at that joint (no thrust block, tie rods or restrained pipe), yes. A standard FCA seals but does not restrain, and Smith-Blair requires the pipe to be anchored. Choose the 911 for ductile iron or steel, the 920 for PVC, or the EZ-W FCA.

Can I use a Style 911 on PVC pipe?

No. The 911 has black wedges made for ductile iron and steel. PVC takes the Style 920 with red wedges, in SDR 26 or heavier wall. Never swap the wedges between the two.

How do I find the right size?

Order by the measured pipe OD, not the nominal size. A 6 in pipe can be 6.63 in OD (steel, IPS PVC) or 6.90 in (ductile iron, C900 PVC). Measure with a pi tape, or divide the circumference by 3.1416, and match it to the OD range in the listing.

What pressure are these adapters rated for?

150 PSI on the 911, 913, 914 and 923; 175 PSI on the 921, the EZ-W FCA and the 920 through 12 in; 250 PSI on the 912. The pipe and the companion flange can set a lower limit.

Are the flange gasket and flange bolts included?

Usually not. The FCA kit covers the coupling end; the gasket and bolts for the companion flange are sized to that flange. The 912 ships with its flange bolts. We quote the rest with the adapter.

How much deflection does an FCA take?

Up to 5° per gland on the Flange-Lock 911 and 920 at 4–12 in (3° at 3 in, less on larger sizes), 4° on the 921 and 2° on the 912, 913 and 914, each at the manufacturer's minimum pipe insertion.

Can an FCA go on HDPE pipe?

Yes, with a pipe stiffener: the 913, 914 and 921 list HDPE, and the EZ-W FCA restrains it. Smith-Blair requires the stiffener on PE and thin-wall PVC pipe.

What is the warranty?

12 months from the date of purchase, under Smith-Blair's published warranty terms.

What replaces a Romac FC400 or Dresser 127?

By Smith-Blair's cross-reference, the 913 matches the Dresser 128, Romac FC400, Ford FCA, JCM 303 and PowerSeal 3528; the 912 matches the Dresser 127, Romac FCA501, Ford FFCA, JCM 301 and PowerSeal 3521. Confirm the OD range and flange before ordering.

Ready to Order Your FCA?

Send the measured pipe OD, the pipe material, the flange size and the working pressure, and tell us whether the joint must be restrained. We reply the same day with the style, part number and price.

1-888.510.4036 Email sales@watermainsupply.com Request a Quote

Technical data on this page is taken from Smith-Blair and Dresser product literature and is subject to change by the manufacturer. Confirm against the current installation instructions before specifying.
Smith-Blair, Flange-Lock, Cam-Lock, EZ-W, OMNI, Top Bolt and Flexi-Coat are trademarks of Smith-Blair, Inc.; Dresser, TX3, Ford, Romac, JCM, PowerSeal, EBAA, SIGMA and Star are trademarks of their respective owners. All are used here for product identification only.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.

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Smith-Blair Flanged Coupling Adapters

Smith-Blair Style 912 OMNI Cast Flanged Coupling Adapter - 3-12 in

Smith-Blair Style 913 Steel Flanged Coupling Adapter - 3-24 in

Smith-Blair Style 911 Flange-Lock Restrained Flanged Coupling Adapter - Ductile Iron and Steel, 3-48 in

Smith-Blair Style 920 Flange-Lock Restrained Flanged Coupling Adapter - PVC, 3-36 in

Smith-Blair Style 923 Flange-Lock Restrained FCA Sleeve - MJ x Flange, 3-48 in

Smith-Blair EZW Restrained Flanged Coupling Adapter - 2-12 in

Smith-Blair Style 914 Steel Reducing Flanged Coupling Adapter - 3-30 in

Smith-Blair Style 921 Top Bolt Wide Range Flanged Coupling Adapter - 2-12 in

Smith-Blair Flanged Coupling Adapters

Flanged Coupling Adapters Restrained & Standard

Will It Work for Me?

Warranty

Reliability

Fit

Size It Now

Restrained or Standard?

Restrained FCA

Standard FCA

The Lines

Restrained FCAs

Smith-Blair Standard FCAs

Style 911

Style 920

Style 923

EZ-W FCA

Style 912

Style 913

Style 914

Style 921

Size by Pipe OD

Compare All Eight

Smith-Blair vs Dresser

Steel FCA: Smith-Blair 913 vs Dresser 128

Wide-range FCA: Smith-Blair 921 vs Dresser TX3

FCA Cross-Reference

Selection Guide

Key Terms

Cam-Lock Wedges

Anchor Studs

AWWA C207 Class D

Wide Range

Pass-Through Body

Flexi-Coat

Restraint Hardware

Style 907 Restraint Plate

Style 101 Tie Rods

Why Watermain Supply

Engineering-Led Sizing

Two Brands, Honest Advice

Part Numbers on Every Build

Account Terms

Submittals and Parts

Houston and the Gulf Coast

Frequently Asked Questions

What is a flanged coupling adapter?

Do I need a restrained FCA?

Can I use a Style 911 on PVC pipe?

How do I find the right size?

What pressure are these adapters rated for?

Are the flange gasket and flange bolts included?

How much deflection does an FCA take?

Can an FCA go on HDPE pipe?

What is the warranty?

What replaces a Romac FC400 or Dresser 127?

Ready to Order Your FCA?

Customer Service

Company

Shipping & Returns

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