straub Coupling GR-S-80A

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Gear-Ring Grip Staub Coupling GR-S-80A

Main Parts:Shell,Bridge Plate,Bolts,Nuts and Washers,Lift-bars and Receiver-lugs

Surface treatment:Acid pickling and passivation

Passivated:Chemically treated after welding for corrosion-resistant coating

Rubber sealing gasket:EPDM/NBR/SILICONE/VITON/GORE-TEX

Bolts:SUS304/316,or cast iron with Q235B galvanization

Nuts:SUS304/316,or cast iron with Q235B galvanization

Washer:SUS304/316,or cast iron with Q235B galvanization

Straub coupling GR-S-80A

Techi Industrial produce Straub Grip-L couplings Grip-S Coupling，stainless steel 304 316 straub pipe coupling are suitable for joining like or dissimilar pipe materials together. Some Applications include: ship building, water and waste water treatment plants and industrial process pipework.

Grip straub coupling GR series material:

Casing: AISI 316Ti. AISI 304
Screws: AISI 316 L. AISI 304
Bolts: AISI 316 Ti. AISI304
Anchoring ring: AISI 301. AISI 304
Sealing sleeve: EPDM standard.

EPDM/NBR sealing sleeve: temperature range – 4 deg. F to 176 deg. F (-20 deg. F to 212 deg. F)

Specification of Straub grip coupling:

ND: Nominal Diameter (A)

ℓ: Allowable Shrinkage/Expansion Clearance (m/m)

D1: Actual Outer Diameter of Pipe (m/m)

U : Outer Diameter of Coupling (m/m)

M: Fastener Bolt Size/Length (m/m)W

P: Working Pressure (kgf·cm2)D2: Min./Max.

Allowable Limit for Pipe (m/m)

L : Coupling Width (m/m)

P: Optimum Locking Torque Value Nm (kgf·)cm

Model（A）	D1(OD)	D2	M	L(S)	L(L)	W.P	P(N.M)
GR-S-20A	27.2	26-28	M6×50L×2 Bolts	57	100	2. 5	5-10
GR-S-25A	34.0	33-35	M6×50L×2 Bolts	57	100	2. 5	5-10
GR-S-32A	42.7	42-44	M8×55L×2 Bolts	80	139	2. 5	10-15
GR-S-40A	48.6	47-49	M8×55L×2 Bolts	80	139	2. 5	10-15
GR-S-50A	60.5	59-62	M10×70L×2 Bolts	107	203	1. 6	15-20
GR-S-65A	76.3	75-78	M10×70L×2 Bolts	107	203	1. 6	15-20
GR-S-80A	89.1	88-92	M12×85L×2 Bolts	107	203	1. 6	15-20
GR-S-100A	114.3	113-117	M12×85L×2 Bolts	116	203	1. 6	25-30
GR-S-125A	139.8	138-142	M14×115L×2 Bolts	116	203	1. 6	25-30
GR-S-150A	165.2	163-167	M14×115L×2 Bolts	116	203	1. 6	25-30
GR-S-200A	216.3	214-219	M16×150L×2 Bolts	155	255	1. 2	40-80
GR-S-250A	267.4	265-270	M16×150L×2 Bolts	155	255	1. 2	40-80
GR-S-300A	318.5	316-321	M18×150L×2 Bolts	155	255	1	80-120
GR-S-350A	355.6	353-358	M18×150L×2 Bolts	155	255	1	80-120
GR-S-400A	406.4	403-408	M18×165L×2 Bolts	155	255	0. 8	80-120
GR-S-450A	457.2	456-461	M18×165L×2 Bolts	155	255	0. 8	80-120
GR-S-500A	508.0	505-512	M18×165L×2 Bolts	155	255	0. 8	120-150