D-SLDE domestic wedge-action gland, face view

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Item # D-SLDE12 Questions and answers (5)

D-SLDE

Domestic wedge-action restraint for mechanical joints on ductile iron pipe.

View price list (PDF)

Rated 350 psi at 12 in., with a 2:1 minimum safety factor
BABA and AIS compliant per its catalog
Auto-torque bolts break off at the set torque, a visual check for the crew
See all specifications

Pipe size: 12 in.

Made: Domestic

D-SLDE, 3 through 48 in. The import SLDE runs to 64 in.

Finish: Standard

Comes with: Gland only

Gland, wedges and actuating bolts.

Your distributor

SIGMA sells through waterworks distributors. Order with item # D-SLDE12.

Quote from SIGMA

Job location

Sends your quote list to the right regional team.

Quantity

Download the D-SLDE submittal

Need help on the job?

Call 800.999.2550. Real people answer, mid-job too.

Right restraint? Selection Tool How far to restrain? Calculator

Everything about the 12 in. D-SLDE.

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

Product detailsWhat it does, highlights and documents

About this product

Water under pressure pushes a gasketed joint apart. D-SLDE holds it at the fitting: contoured wedges grip the pipe, auto-torque bolts break off at the set torque, and the gland bolts to the fitting. Built for projects that need BABA and AIS compliance.

Highlights

BABA and AIS compliant per its April 2026 catalog
Contoured wedges and a set torque protect the pipe wall and its cement lining during installation
Allows deflection of the joint after assembly
Re-rounding feature available on 30 to 48 in.

Documents

Specifications12 in.: 350 psi · 13.20 in. pipe OD · 8 wedges · 41.5 lb

At 12 in.

Item number	D-SLDE12
Working pressure	350 psi
Safety factor	2:1 minimum
Joint deflection	5°
Ductile iron pipe OD	13.20 in.
Gland weight	41.5 lb

Installation at 12 in.

Wedges / bolts	8 / auto-torque bolts that break off at the set torque
T-bolts (no. / size / torque)	8 / 3/4 x 4 in. / torque per the installation tag
Gasket	SIGMASEAL, offered for this size
Torque	On the installation tag that ships with each gland
Tools	Standard tools, no special tool

Materials and standards

Gland, brackets, wedges and actuating bolts	ASTM A536 65-45-12 ductile iron
Wedge hardness	370 BHN minimum
T-head bolts and nuts	High-strength, low-alloy steel to AWWA/ANSI C111/A21.11, 65,000 psi tensile and 45,000 psi yield minimum
Re-rounding feature	30 to 48 in., offered with or without

Ordering

Made	Domestic, BABA and AIS compliant per its catalog
Finish	Standard
Comes with	Gland only
Sizes	3 to 48 in.
Price list	Domestic Pipe Restraint Products, effective 1/19/26

Every size and item number18 sizes, 3 to 64 in. · Domestic, standard, gland only · item numbers

Showing Domestic, standard, gland only. Item numbers follow the options above. Pick a size to load it.

D-SLDE item numbers and submittal data by pipe size
Item #	Pressure	Pipe OD	Gasket	Gland wt.
D-SLDE3	350 psi	3.96 in.	SIGMASEAL, offered for this size	8.6 lb
D-SLDE4	350 psi	4.80 in.	SIGMASEAL, offered for this size	11.7 lb
D-SLDE6	350 psi	6.90 in.	SIGMASEAL, offered for this size	17.6 lb
D-SLDE8	350 psi	9.05 in.	SIGMASEAL, offered for this size	21.7 lb
D-SLDE10	350 psi	11.10 in.	SIGMASEAL, offered for this size	31.9 lb
D-SLDE12	350 psi	13.20 in.	SIGMASEAL, offered for this size	41.5 lb
D-SLDE14	350 psi	15.30 in.	SIGMASEAL, offered for this size	57.0 lb
D-SLDE16	350 psi	17.40 in.	SIGMASEAL, offered for this size	64.0 lb
D-SLDE18	250 psi	19.50 in.	SIGMASEAL, offered for this size	81.0 lb
D-SLDE20	250 psi	21.60 in.	SIGMASEAL, offered for this size	90.0 lb
D-SLDE24	250 psi	25.80 in.	SIGMASEAL, offered for this size	107.0 lb
D-SLDE30	250 psi	32.00 in.	SIGMASEAL, offered for this size	158.7 lb
D-SLDE36	250 psi	38.30 in.	SIGMASEAL, offered for this size	315.8 lb
D-SLDE42	250 psi	44.50 in.	SIGMASEAL, offered for this size	432.2 lb
D-SLDE48	250 psi	50.80 in.	SIGMASEAL, offered for this size	568.7 lb
Not made	250 psi	57.56 in.
Not made	250 psi	61.61 in.
Not made	250 psi	65.67 in.

Ratings, weights, wedges and T-bolts are from the D-SLDE submittal, September 2026; item numbers from the price list. Torque for your size is on the installation tag.

Questions and answers5 questions buyers ask about D-SLDE

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.

Where is the submittal?

Below the Add to quote list button. The D-SLDE submittal has the ratings, dimensions and bolt counts by size. Every SIGMA submittal is also in the Submittals Library.

Is D-SLDE BABA and AIS compliant?

Its April 2026 catalog marks D-SLDE as BABA compliant and AIS compliant. For project paperwork, ask your regional team.

What is the re-rounding feature?

On 30 to 48 in., threaded lugs with hex bolts bring out-of-round pipe close to round so the spigot fits the bell, with no outside equipment: four lugs at 30 and 36 in., six at 42 and 48 in. The black re-rounding bolts are separate from the blue break-off bolts and are not used to install the gland. D-SLDE is offered with or without it.