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flexible coupling, type 7777DX



flexible coupling, type 77 >victaulic groove system<
Flexible coupling made of stainless steel
Victaulic No. 77S
Flexible grooved standard couplings allow controlled linear as well as angular and rotary
motion at all connection points to compensate for expansions/contractions, settling, vibrations,
noises, as well as other motions of the pipe system.
Material specifications
Housing:
Stainless steel for corrosion resistance and strength.
Standard version
Size | Material |
---|---|
20 mm/ 3/4" | CF8M/Typ 316 |
25 - 100 mm/ 1" - 4" | CE8MN/ Duplex |
150 - 450 mm/ 6" - 18" | CF8M/Typ 316 |
Seal:
Standard:
• Grade “EW” EPDM
EPDM (Green W color code). Temperature –30°F to +230°F/–34°C to +110°C. Recommended for
hot water service within the specified temperature range plus a variety of dilute acids, oil-free air
and many chemical services. WRAS-certified material with approved microbiological resistance to
BS 6920 for cold and hot potable water service up to +149°F/+65°C. NOT RECOMMENDED FOR
PETROLEUM SERVICES.
Optional Gaskets: (specify choice)
• Grade “E” EPDM
EPDM (Green Stripe color code). Temperature range –30°F to +230°F/–34°C to +110°C.
Recommended for cold and hot water service within the specified temperature range plus a
variety of dilute acids, oil-free air and many chemical services. UL Classified to ANSI/NSF 61 for
cold +86°F/+30°C and hot +180°F/+82°C potable water service. NOT RECOMMENDED FOR
PETROLEUM SERVICES.
• Grade “T” nitrile
Nitrile (Orange Stripe color code). Temperature range –20°F to +180°F/–29°C to +82°C.
Recommended for petroleum products, air with oil vapors, vegetable and mineral oils within the
specified temperature range. Not recommended for hot water services over
+150°F/+66°C or for hot dry air over +140°F/+60°C.
• Grade “O” fluoroelastomer
Fluoroelastomer (Blue Stripe color code). Temperature range +20°F to + 300°F/–7°C to +149°C.
Recommended for many oxidizing acids, petroleum oils, halogenated hydrocarbons, lubricants,
hydraulic fluids, organic liquids and air with hydrocarbons.
Performance data of the flexible coupling system
Nominal pressures
Pressure depending on nominal size and wall thickness
Design
D x s | Sched. | bar |
---|---|---|
26,9 x 1,65 | 5S | 22,41 |
26,9 x 2,11 | 10S | 34,45 |
26,9 x 2,87 | 40S | 51,75 |
26,9 x 2,87 | 40S* | 82,73 |
------------- | ------ | ------ |
33,7 x 1,65 | 5S | 22,41 |
33,7 x 2,77 | 10S | 34,45 |
33,7 x 3,38 | 40S | 51,75 |
33,7 x 3,38 | 40S* | 82,73 |
------------- | ------ | ------ |
42,4 x 1,65 | 5S | 22,41 |
42,4 x 2,77 | 10S | 34,45 |
42,4 x 3,56 | 40S | 51,75 |
42,4 x 3,56 | 40S* | 82,73 |
------------- | ------ | ------ |
48,3 x 1,65 | 5S | 22,41 |
48,3 x 2,77 | 10S | 34,45 |
48,3 x 3,68 | 40S | 51,75 |
48,3 x 3,68 | 40S* | 82,73 |
------------- | ------ | ------ |
60,3 x 1,65 | 5S | 22,41 |
60,3 x 2,77 | 10S | 34,45 |
60,3 x 3,91 | 40S | 51,75 |
60,3 x 3,91 | 40S* | 82,73 |
------------- | ------ | ------ |
88,9 x 2,11 | 5S | 17,24 |
88,9 x 3,05 | 10S | 27,60 |
88,9 x 5,49 | 40S | 51,75 |
88,9 x 5,49 | 40S* | 82,73 |
------------- | ------ | ------ |
114,3 x 2,11 | 5S | 15,51 |
114,3 x 3,05 | 10S | 24,13 |
114,3 x 6,02 | 40S | 27,60 |
114,3 x 6,02 | 40S* | 82,73 |
------------- | ------ | ------ |
168,3 x 2,77 | 5S | 8,62 |
168,3 x 3,40 | 10S | 13,79 |
168,3 x 7,11 | 40S | 20,68 |
168,3 x 7,11 | 40S* | 82,73 |
40S* = milled groove duplex tube
Performance data of the flexible coupling system
D x s | Sched. | bar |
---|---|---|
219,1 x 2,77 | 5S | 5,17 |
219,1 x 3,76 | 10S | 8,62 |
219,1 x 8,18 | 40S | 20,68 |
-------------- | ------ | ------- |
273,0 x 3,40 | 5S | 4,19 |
273,0 x 4,19 | 10S | 5,17 |
273,0 x 9,27 | 40S | 20,68 |
-------------- | ------ | ------- |
323,9 x 3,96 | 5S | 4,57 |
323,9 x 4,57 | 10S | 8,62 |
323,9 x 9,53 | 40S | 20,68 |
Permissible pipe end gap
Pipe OØ | max. |
---|---|
26,9 - 101,6 | 1,6 |
108,0 - 610,0 | 3,2 |
All specifications in mm
extended product description
Stainless steel Victaulic Standard Nutsystem flex & type 77DX/77S
flexible coupling, type 7777DX

Flexible coupling made of stainless steel
Victaulic No. 77S
Flexible grooved standard couplings allow controlled linear as well as angular and rotary
motion at all connection points to compensate for expansions/contractions, settling, vibrations,
noises, as well as other motions of the pipe system.
Material specifications
Housing:
Stainless steel for corrosion resistance and strength.
Standard version
Size | Material |
---|---|
20 mm/ 3/4" | CF8M/Typ 316 |
25 - 100 mm/ 1" - 4" | CE8MN/ Duplex |
150 - 450 mm/ 6" - 18" | CF8M/Typ 316 |
Seal:
Standard:
• Grade “EW” EPDM
EPDM (Green W color code). Temperature –30°F to +230°F/–34°C to +110°C. Recommended for
hot water service within the specified temperature range plus a variety of dilute acids, oil-free air
and many chemical services. WRAS-certified material with approved microbiological resistance to
BS 6920 for cold and hot potable water service up to +149°F/+65°C. NOT RECOMMENDED FOR
PETROLEUM SERVICES.
Optional Gaskets: (specify choice)
• Grade “E” EPDM
EPDM (Green Stripe color code). Temperature range –30°F to +230°F/–34°C to +110°C.
Recommended for cold and hot water service within the specified temperature range plus a
variety of dilute acids, oil-free air and many chemical services. UL Classified to ANSI/NSF 61 for
cold +86°F/+30°C and hot +180°F/+82°C potable water service. NOT RECOMMENDED FOR
PETROLEUM SERVICES.
• Grade “T” nitrile
Nitrile (Orange Stripe color code). Temperature range –20°F to +180°F/–29°C to +82°C.
Recommended for petroleum products, air with oil vapors, vegetable and mineral oils within the
specified temperature range. Not recommended for hot water services over
+150°F/+66°C or for hot dry air over +140°F/+60°C.
• Grade “O” fluoroelastomer
Fluoroelastomer (Blue Stripe color code). Temperature range +20°F to + 300°F/–7°C to +149°C.
Recommended for many oxidizing acids, petroleum oils, halogenated hydrocarbons, lubricants,
hydraulic fluids, organic liquids and air with hydrocarbons.
Performance data of the flexible coupling system
Nominal pressures
Pressure depending on nominal size and wall thickness
Design
D x s | Sched. | bar |
---|---|---|
26,9 x 1,65 | 5S | 22,41 |
26,9 x 2,11 | 10S | 34,45 |
26,9 x 2,87 | 40S | 51,75 |
26,9 x 2,87 | 40S* | 82,73 |
------------- | ------ | ------ |
33,7 x 1,65 | 5S | 22,41 |
33,7 x 2,77 | 10S | 34,45 |
33,7 x 3,38 | 40S | 51,75 |
33,7 x 3,38 | 40S* | 82,73 |
------------- | ------ | ------ |
42,4 x 1,65 | 5S | 22,41 |
42,4 x 2,77 | 10S | 34,45 |
42,4 x 3,56 | 40S | 51,75 |
42,4 x 3,56 | 40S* | 82,73 |
------------- | ------ | ------ |
48,3 x 1,65 | 5S | 22,41 |
48,3 x 2,77 | 10S | 34,45 |
48,3 x 3,68 | 40S | 51,75 |
48,3 x 3,68 | 40S* | 82,73 |
------------- | ------ | ------ |
60,3 x 1,65 | 5S | 22,41 |
60,3 x 2,77 | 10S | 34,45 |
60,3 x 3,91 | 40S | 51,75 |
60,3 x 3,91 | 40S* | 82,73 |
------------- | ------ | ------ |
88,9 x 2,11 | 5S | 17,24 |
88,9 x 3,05 | 10S | 27,60 |
88,9 x 5,49 | 40S | 51,75 |
88,9 x 5,49 | 40S* | 82,73 |
------------- | ------ | ------ |
114,3 x 2,11 | 5S | 15,51 |
114,3 x 3,05 | 10S | 24,13 |
114,3 x 6,02 | 40S | 27,60 |
114,3 x 6,02 | 40S* | 82,73 |
------------- | ------ | ------ |
168,3 x 2,77 | 5S | 8,62 |
168,3 x 3,40 | 10S | 13,79 |
168,3 x 7,11 | 40S | 20,68 |
168,3 x 7,11 | 40S* | 82,73 |
40S* = milled groove duplex tube
Performance data of the flexible coupling system
D x s | Sched. | bar |
---|---|---|
219,1 x 2,77 | 5S | 5,17 |
219,1 x 3,76 | 10S | 8,62 |
219,1 x 8,18 | 40S | 20,68 |
-------------- | ------ | ------- |
273,0 x 3,40 | 5S | 4,19 |
273,0 x 4,19 | 10S | 5,17 |
273,0 x 9,27 | 40S | 20,68 |
-------------- | ------ | ------- |
323,9 x 3,96 | 5S | 4,57 |
323,9 x 4,57 | 10S | 8,62 |
323,9 x 9,53 | 40S | 20,68 |
Permissible pipe end gap
Pipe OØ | max. |
---|---|
26,9 - 101,6 | 1,6 |
108,0 - 610,0 | 3,2 |
All specifications in mm
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