Page 4 - 2023 Straub Couplings

W1
W2
W4
W5
Components
Casing
Bolts
Bars
Anchoring ring 1.43110
Strip insert (option) 1.44350
MATERIAL SPECIFICATIONS
COUPLING TYPES
W1 W2 W4 W5*
DIN
AISI DIN
301 1.4310/1.4301
316L 1.4435
AISI DIN
301 1.4310/1.4301
316L 1.4435
AISI
301
316L
DIN
1.4310
1.4435
AISI
301
316L
1.0570, galvanized
1024
1.4301/1.4404
304/316L
1.4301
304
1.4571
316 Ti/316L
1.7220
4135
1.7220
4135
1.4404/1.4435
316L
1.4404/1.4435
316L
1.0737 galvanized
12L14
1.0737, galvanized
12L14
1.4404/1.4435
316L
1.4404/1.4435
316L
* Lean Duplex casings available for some product types.
Optional strip insert - AISI Type 316L Stainless Steel, HDPE or PVDF.
For casing designations refer to the size and pressure indicated in the STRAUB-FLEX and STRAUB-OPEN-FLEX selection chart. All materials meets ANSI / AISI standards.
GASKET SPECIFICATIONS
GASKET MATERIAL:
EPDM -4˚ to +212˚F*
Nitrile -4˚ to +180˚F HNBR -4˚ to +257˚F
FPM/FKM -4˚ to +356˚F Fluoroelastomer
GENERAL SERVICE APPLICATION:
Water, dilute acids, alkalies, salts, and many chemical services not involving hydrocarbons, oils or gases. Excellent oxidation resistance.
Note: NOT FOR USE WITH HYDROCARBONS
Note: For Air Service maximum temperature is +250˚F
Exceptions for higher than 250°F air service can be approved on a case by case basis.
Petroleum products, vegetable oils, mineral oils and air contaminated with petroleum oils.
H-NBR available for higher temperature applications. Water, Gas, Oil, Fuel and other Hydrocarbons (on request only, quantity sensitive)
High temperature resistance to oxidizing acids, petroleum oils, hydraulic fluids, halogenated hydrocarbons and lubricants. (Not available in all sizes/types).
* Maximum temperature limit is 212˚F (100˚C) with EPDM gasket material. Higher temperature limits may be allowed subject to specific factory approval. For specific chemical recommendations, please consult your Straub Professional.
HOW TO ORDER (Example)
Product Designation
STRAUB-GRIP STRAUB-METAL-GRIP STRAUB-FLEX + (casing type) STRAUB-OPEN-FLEX + (casing type)
10" IPS
CTS Galvanized “G”
AWWA
Other (Supply actual Pipe OD)
E - EPDM N - Nitrile V - Viton®
Optional Strip Insert
SI PVDF T
Nominal Pipe Size Or Pipe O.D.
Gasket Material
Pipe Designation
Lock Parts
Stainless Steel “SS”
Example: STRAUB-GRIP - 10-IPS - SS - E - S -- Represents STRAUB-GRIP style coupling for 10" IPS pipe with stainless steel lock parts, an EPDM gasket and the optional stainless strip insert.
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