Flexible Coupling

STYLE 77S

Designed to provide a rugged mechanical joint for grooved end stainless steel piping systems,

Style 77S coupling sizes 1" - 4"/24 - 100mm are cast of CE8MN (duplex stainless steel). Coupling

sizes ¾"/20mm and 6" - 18"/150mm - 450mm are cast of CF8M (316 stainless steel). Style 77S

couplings come standard with WRAS-certified, Grade "EW" EPDM gasket material with approved

microbiological resistance .

 

See pressure rating table.

 

Material specifications housing:

1" - 4"/25 - 100mm:

CE8MN (duplex stainless steel conforming to ASTM A890/A890M)

 

¾"/20mm and 6" - 18"/150 - 450mm:

 

CF8M (316 stainless steel) conforming to ASTM A351,

A743 and A744.

 

Optional

(sizes ¾"/20mm and 6"/150mm ONLY): CE8MN (duplex stainless steel) conforming to

ASTM A890/A890M

 

Housing Coating:

None

Note:

¾"/20mm and 6"/150mm sizes are supplied with standard, CF8M (Type 316 stainless steel)

housings. Please contact Victaulic for ¾"/20mm and 6"/150mm CE8MN (duplex stainless steel)

option.

Gaskets:

*Services listed are General Service Recommendations only. It should be noted that there are

services for which these gaskets are not recommended. Reference should always be made to

the latest Victaulic Gasket Selection Guide (05.01) for specific gasket service recommendations

and for a listing of services which are not recommended.

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 recomended for hot water services over

Style 475

 Designed to provide a durable mechanical joint for grooved end stainless steel piping systems,

Style 475 stainless steel couplings are available in Type 316 (CF8M). See chart on page 2

for pressure ratings. The Style 475 comes standard with WRAS- certified, Grade “EW” EPDM

gasket material with approved microbiological resistance.

Stainless steel track bolts, which provide single-wrench tightening, are provided as standard.

The Victaulic system accommodates expansion/contraction/deflection and permits designers

to take advantage of these characteristics. Elimination or reduction of special vibration

accessories,

expansion loops and settlement allowance are among the options. Request

26.01, 26.02 and 26.04 for additional details.

Unique design features of the Style 475 coupling permit assembly by removing one nut/bolt

and scissoring housing over gasket. This reduces the number of components to handle during

assembly, which speeds and eases installation.

 

Housing:

 

 

 

Type 316 stainless steel, conforming to ASTM-A351, A743, and A744 Grade CF8M.

 

 

Housing Coating:

 

 

 

None

 

 

Gaskets:

 

 

 

 

 

* Services listed are General Service Recommendations only. It should be noted that there are

 

services

 

for which these gaskets are not recommended. Reference should always be made to the

 

latest Victaulic Gasket Selection Guide (05.01) for specific gasket service recommendations and

 

for a listing of services which are not recommended.

 

 

 

 

 

Standard:

 

 

 

 

 

•

 

 

 

Grade “EW” EP DM

 

 

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” EP DM

 

 

 

EPDM (Green Stripe color code). Temperature range -30°F to +250°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 RECOMMENED FOR

 

Petroleum services.