The Model C-7 Outlet Coupling combines the features of a coupling and a reducing outlet. The C-7 is a joining device with an integral reducing outlet, eliminating the need for a mechanical tee or a reducing tee and couplings. The C-7 is available with grooved, male threaded or female threaded outlets. The C-7 coupling is recommended for fire sprinkler services and other applications up to 300 psi (20 Bar) depending on the size and schedule of pipe being used. The C-7 can be used for dry pipe systems or vacuum services up to -10 inHg or 254 mmHg which may occur when the system is drained. All Model C-7 couplings are comprised of an upper and lower ductile iron housings segment, EPDM rubber gasket and plated track bolts & nuts. Housings segments are supplied with our standard painted finishes, i.e. orange or RAL3000 red. Optional finishes such as hot dipped zinc galvanized and custom epoxy coatings are available.

C-7 couplings should always be installed so that the coupling bolt pads make metal to metal contact.

For Fire Protection pressure rating, listing, and approval information, refer to Data Sheet B-42 or visit SHURJOINT website, www.shurjoint.com for details or contact your SHURJOINT Representative.

Full warranty terms can be found on www.shurjoint.com

Unit: psi / Bar

Model C-7 on Carbon Steel Pipe

Nom. Size	Cut-Grooved			Roll-Grooved
in / mm	XS	STD		STD	Sch. 10		Sch. 7
1½ x *	500	500	500		350	300
40 x *	35	35		35	24		20
2 x *	500	500	500		350	300
50 x *	35	35		35	24		20
2½ x *	500	500	500		350	300
65 x *	35	35		35	24		20
2½ x *	500	500	500		350	300
65 x *	35	35		35	24		20
3 x *	500	500	500		350	300
80 x *	35	35		35	24		20
4 x *	500	500	500		350	300
100 x *	35	35		35	24		20
6 x *	400	400	400		350	300
150 x *	28	28		28	24		20
6 x *	400	400	400		350	300
150 x *	28	28		28	24		20

* = all branch sizes, threaded and grooved

Unit: psi / Bar

Model C-7 on Stainless Steel Pipe

Nom. Size	Cut-Grooved		Roll-Grooved
in / mm	Sch. 80S	Sch. 40S	Sch. 40S	Sch. 10S	Sch. 5S
1½ x *	500	500	350	300	250
40 x *	35	35	24	20	17
2 x *	500	500	350	300	250
50 x *	35	35	24	20	17
2½ x *	500	500	350	300	250
65 x *	35	35	24	20	17
2½ x *	500	500	350	300	250
65 x *	35	35	24	20	17
3 x *	500	500	350	300	250
80 x *	35	35	24	20	17
4 x *	500	500	350	300	250
100 x *	35	35	24	20	17
6 x *	400	400	300	300	250
150 x *	28	28	20	20	17
6 x *	400	400	300	300	250
150 x *	28	28	20	20	17

* = all branch sizes, threaded and grooved

MATERIAL SPECIFICATIONS

• Housing:

Ductile Iron to ASTM A536, Gr. 65-45-12 and or ASTM A395, Gr. 65-45-15, min. tensile strength 65,000 psi (448 MPa).

• Surface Finish:

Standard painted finishes in orange or RAL3000 red.

Hot dip zinc galvanized (Option).

Epoxy Coatings in RAL3000 red or other colors (Option)

•Rubber Gasket:

Grade “E” EPDM (Color code: Green stripe) Good for cold & hot water up to +230oF (+110oC). Also good for services for water with acid, water with chlorine, deionized water, seawater and waste water, dilute acids, oil-free air and many chemicals.

Not recommended for petroleum oils, minerals oils, solvents and aromatic hydrocarbons.

Maximum Temperature Range: -30oF (-34oC) to +230oF (+110oC)*.

*EPDM gaskets for water services are not recommended for steam services unless couplings or components are accessible for frequent gasket replacement.

(Option) Grade “T” Nitrile (Color code: Orange stripe) Recommended for petroleum products, air with oil vapors, vegetable and mineral oils within the specified temperature range. Also good for water services under +150oF (+66oC). Temperature range: -20 oF to +180 oF (-29 oC to +82 oC).

Do not use for HOT WATER above +150 oF (+66 oC) or HOT DRY AIR above +140 oF (+60 oC).

Other options: Grade “O” - Fluoroelastomer.

Grade “L” - Silicone.

For additional details contact Shurjoint.

• Bolts & Nuts:

Heat treated carbon manganese steel track bolts to ASTM A449-83a (or A183 Gr. 2), minimum tensile strength 110,000 psi (758 MPa), Zinc electroplated, with heavy-duty hexagonal nuts to ASTM A563.

Flow Data – Cv Values

Values for flow of water at +60oF (+16oC).

C =

√∆

Where: Cv = Flow coefficient Q = Flow (GPM)

ΔP= Pressure drop (psi)

Flow Characteristics

C-10-3/4 Rev.M 20130220

				Grooved Outlet			Threaded Outlet
	Nominal Size			Cv Values			Cv Values
	in / mm
	½		---			---
15
¾			---			15
20
1			25			25
25
1¼			42			40
32
1½			53			60
40
2			88			---
50
2½			125			---
65

		Grooved Outlet		Threaded Outlet
Nominal Size		Equivalent Length		Equivalent Length
in / mm		feet / m		feet / m
½		---		2.6
15				0.8
¾		---		3.9
20				1.2
1		3.0		3.0
25		0.9		0.9
1¼		6.2		6.2
32		1.9		1.9
1½		5.6		5.6
40		1.7		1.7
2		7.9		---
50		2.4
2½		8.9		---
65		2.7