SIGMAFlange Adapter SFA12, red flange-by-MJ sleeve

The photos show an SFA sleeve; the third image is a catalog render. The item number sets the size and what comes in the box.

Item # SFADP8 Questions and answers (8)

SIGMAFlange Adapter

Ductile iron flange-by-MJ sleeve, 3 to 36 in., for plain-end ductile iron pipe with ONE-LOK SLDE, or PVC pipe with SLCE (sizes under Specifications). Flange bolts not included.

View price list (PDF)

Rated 350 psi on ductile iron pipe at 8 in.
On PVC pipe: rated to the working pressure of the pipe, with a 2:1 safety factor
UL listed and FM approved at 3 to 12 in., per the submittal
See all specifications

Comes as: SFADP sleeve and SLDE pack

Size: 8 in.

Made: Import

Listed on the Import Restraint Products price list. Domestic-content requirement on the job? Ask your regional team.

Coating: Standard

Sleeve: red exterior and NSF 61 black asphaltic lining, both over an e-coat undercoat.

Your distributor

SIGMA sells through waterworks distributors. Order with item # SFADP8.

Quote from SIGMA

Job location

Sends your quote list to the right regional team.

Quantity

Download the SFA submittal

Need help on the job?

Call 800.999.2550 with the pipe type and the size.

SFA or SFUP? All flange adapters Installation instructions (PDF)

Everything about the 8 in. SFADP sleeve and SLDE pack.

Details, specs, every size and the questions buyers ask. Open what you need.

Product detailsWhat it is, highlights and documents

About the SFA

The SIGMAFlange Adapter, model SFA, connects plain-end ductile iron or PVC pipe to a flanged fitting, valve or pipe. It is an oversized ductile iron mechanical joint by flange sleeve: an O-ring on the flange face seals against the mating flange, and the mechanical joint end takes a ONE-LOK wedge-action gland, SLDE on ductile iron pipe or SLCE on PVC pipe.

Order the sleeve alone (SFA), with SLDE (SFADP) or with SLCE (SFACP). Ratings and installation steps are under Specifications.

It accommodates pipe misalignment and slight variations in field-cut pipe, and works as a dismantling joint for service.

Highlights

3 to 36 in. on ductile iron pipe; PVC sizes under Specifications
Sleeve in ductile iron, ASTM A536 Grade 65-45-12
Max. deflection 5° at 3 to 12 in., down to 1° at 30 and 36 in.

Documents

Specifications8 in. SFADP sleeve and SLDE pack

8 in. SFADP sleeve and SLDE pack

Item number	SFADP8
Comes as	SFADP sleeve and SLDE pack
Size	8 in.
Made	Import
Coating	Standard
Pressure rating	350 psi on ductile iron pipe
Max. deflection	5°
Weight	50.24 lb
Crate quantity
Catalog page	Page 3 of the SFA catalog
Price list	Import Restraint Products, effective 12/9/24, rev. 4/14/26

Materials

Sleeve	Ductile iron, ASTM A536 Grade 65-45-12. Dimensions to ANSI/AWWA C110/A21.10, C153/A21.53 and C115/A21.15 (Class 125/150 drilling pattern)
Gaskets	O-ring (on the sleeve) and mechanical joint gasket (in the ONE-LOK pack) in SBR per ANSI/AWWA C111/A21.11. EPDM, neoprene and nitrile are options on the submittal: ask your regional team
T-head bolts and nuts	In the ONE-LOK pack: high strength, low alloy steel per ANSI/AWWA C111/A21.11. Type 304 or 316 stainless steel and blue fluoropolymer are options on the submittal: ask your regional team
Coating	Sleeve exterior: red over an e-coat (CorrSafe) undercoat. Interior: NSF 61 black asphaltic lining over the e-coat
In the box	SFA: the sleeve with its O-ring. SFADP: the sleeve and a ONE-LOK SLDEP pack (SLDE gland, gasket and T-bolts). SFACP: the sleeve and a ONE-LOK SLCEP pack. Flange bolts are not included

Ratings and approvals

Ductile iron pipe	350 psi at 3 to 16 in.; 250 psi at 18 to 36 in., per the catalog chart and the submittal. The catalog's sample specification says 350 psi at 3 to 12 in. and 250 psi at 14 to 24 in.: confirm with your regional team before you copy it into a spec
PVC pipe	Equal to the rated working pressure of the pipe, 4 to 36 in. per the submittal. The catalog and price list also list a 3 in. PVC pack (SFACP3): confirm it with your regional team. The catalog says the SFA accommodates DIA PVC pipe; for IPS PVC, ask your regional team
Steel pipe	The September 2026 submittal lists steel pipe. Ask your regional team for sizes, rating and gland before you specify it
Safety factor	2:1
UL and FM	UL listed and FM approved at 3 to 12 in., per the submittal
Deflection	5° at 3 to 12 in.; 2° at 14 and 16 in.; 1.5° at 18 to 24 in.; 1° at 30 and 36 in.
Traceability	Each sleeve is cast with heat code information

Installation

Before you start	Check the sleeve for damage and that its O-ring is secured in the cavity on the flange face. Clean the pipe end
Gland and gasket	Slide the ONE-LOK gland onto the pipe, lip toward the pipe end. Lubricate the mechanical joint gasket and the plain end, then slide the gasket on, tapered side toward the pipe end
Flange side	Bolt the sleeve to the mating flange and fully assemble the flanged joint. Flange bolts are not included
Pipe insertion	At least 2.125 in. at 3 and 4 in., 2.5 in. at 6 to 12 in., and 3 in. at 14 to 24 in. The instructions give no value for 30 and 36 in.: ask your regional team
Mechanical joint	Center the pipe, seat the gasket evenly, bring up the gland and hand-tighten the T-bolts. Make any deflection before you tighten the bolts, then install the gland per the ONE-LOK instructions for the pipe

From the SFA submittal (September 2026), catalog and installation instructions (April 2014). Sleeve weights are from the dimensional chart and pack weights from the pack tables, which list different sleeve weights. The submittal's weight column at 10 to 36 in. repeats dimension B (C at 36 in.): use the catalog's dimensional chart for sleeves and its pack tables for packs, or ask your regional team. Dimensions are in the catalog, under Documents.

Every size and item number13 sizes of the SFADP sleeve and SLDE pack · Import, Standard · item numbers

Showing the SFADP sleeve and SLDE pack, Import, Standard. Item numbers follow the options above. Pick a size to load it.

SFA: item numbers, ratings on ductile iron pipe and weights by size
Item #	DI pipe rating	Weight
SFADP3	350 psi	17.18 lb
SFADP4	350 psi	24.29 lb
SFADP6	350 psi	36.62 lb
SFADP8	350 psi	50.24 lb
SFADP10	350 psi	73.97 lb
SFADP12	350 psi	92.72 lb
SFADP14	350 psi	127.31 lb
SFADP16	350 psi	156.53 lb
SFADP18	250 psi	176.73 lb
SFADP20	250 psi	211.37 lb
SFADP24	250 psi	290.66 lb
SFADP30	250 psi	601.54 lb
SFADP36	250 psi	726.12 lb

Ratings are on ductile iron pipe; on PVC pipe the rating equals the pipe's. Sleeve weights from the dimensional chart; pack weights from the pack tables.

Questions and answers8 questions buyers ask about the SFA

Where do I find the price?

On SIGMA's price lists. Where an item is on a posted list, the View price list button near the top of this page opens it, and every posted list is on the Price Lists page. SIGMA sells through waterworks distributors, and your distributor sets your price. For contract pricing, ask your regional team.

SFA, SFADP or SFACP?

SFA is the sleeve with its O-ring. SFADP adds a ONE-LOK SLDEP pack (SLDE gland with its gasket and T-bolts) for ductile iron pipe. SFACP adds a ONE-LOK SLCEP pack for PVC pipe. The sleeve must be used with an SLDE or SLCE gland. Flange bolts are not included with any of them.

Which pipe does it fit?

Plain-end ductile iron pipe, 3 to 36 in., with ONE-LOK SLDE, and PVC pipe with SLCE, 4 to 36 in. per the September 2026 submittal. The catalog and the price list also list a 3 in. PVC pack (SFACP3): confirm it with your regional team. The catalog says the SFA accommodates DIA PVC pipe; for IPS PVC, ask your regional team. For steel pipe, ask your regional team.

What pressure is it rated for?

On ductile iron pipe, 350 psi from 3 to 16 in. and 250 psi from 18 to 36 in., per the catalog chart and the September 2026 submittal. The catalog's sample specification gives 250 psi at 14 and 16 in.: confirm with your regional team before you specify. On PVC pipe, the rated working pressure of the pipe. Both with a 2:1 safety factor.

How much deflection does it take?

5° at 3 to 12 in., 2° at 14 and 16 in., 1.5° at 18 to 24 in. and 1° at 30 and 36 in. Make any deflection after the joint is assembled but before you tighten the bolts.

Is it UL listed or FM approved?

The September 2026 submittal gives UL listed and FM approved at 3 to 12 in.

SFUP or SFA: which one?

Both join plain-end pipe to a flange. The SFUP is a joint pack: adapter ring, ONE-LOK SLGU wedge-action gland, mechanical joint gasket and hex bolts, for ductile iron, steel, PVC and HDPE pipe. The SIGMAFlange Adapter (SFA) is a flange-by-MJ sleeve that is restrained with a ONE-LOK SLDE gland on ductile iron pipe or SLCE on PVC pipe. It comes alone or packed with the gland (SFADP, SFACP). Flange bolts are not included with the SFA.

Can it be taken apart?

Yes. The catalog describes it as a dismantling joint for service and maintenance, with no special tools needed to install or remove it.

How an SFA goes on.

Three basic steps. The installation sheet has the details, and the ONE-LOK instructions cover the gland.

Gland and gasket on the pipe.

Sleeve to the flange, then the pipe.

Seat, deflect, then restrain.

ONE-LOK gland and mechanical joint gasket on a pipe end beside a flanged bend, catalog render

Shown: gland and gasket on the pipe, catalog render.

SFA sleeve bolted to a flanged bend with the pipe going in, catalog render

Shown: sleeve bolted to a flanged bend, catalog render.

Shown: the assembled joint, catalog render. Installation instructions (PDF)

SIGMAFlange Universal (SFUP)

Joint pack for plain-end pipe: ductile iron 3 to 36 in., C900 PVC 4 to 36 in., steel and IPS PVC 3 to 12 in. For 3 in. on steel, ask your regional team.

See SFUP ›