Brand: Victaulic

Victaulic Style 07 Zero-Flex Rigid Coupling

Name: Victaulic Style 07 Zero-Flex Rigid Coupling – Datasheet
Brand: Victaulic
SKU: Style 07

Description

Rigid grooved coupling for fixed pipe runs

The Victaulic Style 07 Zero-Flex is a rigid grooved coupling that joins roll-grooved or cut-grooved carbon steel pipe, fittings and valves. Unlike a flexible coupling, it is designed to restrict axial and angular movement, so it behaves as a fixed joint and is used where the pipe must be held in line: risers, pump and equipment headers, mechanical rooms and fire protection mains. The two-bolt ductile iron housing locks onto the pipe grooves and clamps a pressure-responsive gasket, with no welding or flanging.

The coupling covers 1 to 12 in. (DN25 to DN300) and pressures from full vacuum up to 750 psi (52 bar), depending on size, pipe material and wall thickness. For 14 to 24 in. the datasheet refers to the Style W07 AGS rigid coupling.

Technical specifications

Values are from Victaulic publication 06.02 (Rev S, updated 09/2026).

Parameter	Specification
Type	Rigid coupling, Victaulic Original Groove System (OGS), Style 07 Zero-Flex
Sizes	1 to 12 in. / DN25 to DN300
Pipe material	Carbon steel; stainless steel pipe per Victaulic publications 17.09 and 17.01
Pressure	Full vacuum (29.9 in Hg) up to 750 psi / 5171 kPa / 52 bar, depending on size and pipe
Housing	Ductile iron, ASTM A536 Grade 65-45-12
Housing coating	Orange enamel (standard); hot-dip galvanized to ASTM A153 optional
Gasket Grade E	EPDM, -30 to +230 F / -34 to +110 C; not for petroleum or steam service
Gasket Grade T	Nitrile, -20 to +180 F / -29 to +82 C; not for hot water or steam service
Bolts and nuts	Zinc-electroplated carbon steel oval-neck track bolts and heavy hex nuts
Support design	Hanging and support requirements per ASME B31.1, ASME B31.9 and NFPA 13
Not for	PVC or CPVC pipe

Dimensions and ratings

Selected sizes from the dimension table. Pipe end separation is for system layout only; the coupling is rigid and does not accommodate expansion, contraction or angular movement.

Nominal size, in. / DN	Actual OD, in. / mm	Pipe end separation, in. / mm	Bolt size (2 per coupling), in.	Y, in. / mm	Weight, lb / kg
1 / DN25	1.315 / 33.7	0.05 / 1.3	3/8 x 2	4.22 / 108	1.6 / 0.7
2 / DN50	2.375 / 60.3	0.07 / 1.8	1/2 x 2-1/2	5.78 / 146	2.3 / 1.0
3 / DN80	3.500 / 88.9	0.07 / 1.8	1/2 x 2-1/2	6.81 / 172	3.0 / 1.4
4 / DN100	4.500 / 114.3	0.16 / 4.1	1/2 x 2-3/4	8.21 / 208	5.3 / 2.4
6 / DN150	6.625 / 168.3	0.16 / 4.1	5/8 x 3-1/4	10.83 / 276	8.3 / 3.8
8 / DN200	8.625 / 219.1	0.19 / 4.8	3/4 x 4-1/4	13.74 / 348	15.1 / 6.8
12 / DN300	12.750 / 323.9	0.13 / 3.3	7/8 x 6-1/2	18.88 / 480	28.2 / 13.0

Maximum working pressure, based on ANSI B36.10 carbon steel pipe grooved to Victaulic specification:

Nominal size	Maximum working pressure, psi / kPa
1 to 4 / DN25-DN100 (and 5 in. 141.3 mm)	750 / 5171
5 in. 133 and 139.7 mm; 6 in. 159 to 168.3 mm	700 / 4826
8 in. / DN200	600 / 4137
10 in. / DN250	500 / 3447
12 in. / DN300	400 / 2758

Selection and documents

Choose the coupling type by joint behavior: use a rigid Style 07 where a fixed joint is needed, and a flexible joint such as the Victaulic Style 107N where movement must be absorbed. Confirm the gasket grade for the service and the pressure for the pipe wall in use. More fittings are listed under Pipes and Fittings. The attached Victaulic publication 06.02 holds the full dimension and performance tables. Send the pipe size, gasket grade, coating and quantity for a quotation.

Datasheets & Documents

Datasheet Victaulic publication 06.02 Style 07 Zero-Flex rigid coupling (Rev S) Download

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About brand

Grooved pipe joining started with Victaulic in 1919, and the company, based in Easton, USA, still sets the reference for couplings that join pipe without welding or flanges. Seven Star LLC lists Victaulic couplings and butterfly valves, among them the Style 107N QuickVic rigid coupling, and supplies Victaulic couplings and fittings for mechanical, utility and process piping in Oman on inquiry.

Victaulic Style 107N QuickVic couplings

The Style 107N is a rigid coupling for roll-grooved or cut-grooved carbon steel and stainless steel pipe in sizes from 2 to 12 inches (DN 50 to DN 300). Victaulic rates it from full vacuum up to 750 psi (5171 kPa), but the working pressure of a given joint depends on pipe material, wall thickness and size. The housing has an angled bolt pad that makes the joint rigid, and a galvanized finish is optional.

Where Victaulic couplings are used and what to send

The manufacturer names HVAC, utility and process piping as the applications for this style. For an inquiry, send the style number, nominal size, pipe material and schedule, the fluid and temperature so the gasket grade can be checked, the housing finish and the quantity. GCC consultants often ask for the submittal sheet, which we provide from the manufacturer.

Browse Victaulic products by category: Pipes & Fittings.