Reinforced Axially Restrained Coupling
The GRIP-Z is a standard axial restrain coupling with reinforced internal structure so that can bear higher pressure. The double anchoring rings can bite into the two pipes and prevent them from pulling apart.
Suitable for pipes O.D φ30-φ168.3mm
Suitable for pipes material: Carbon steel, stainless steel, copper, cunifer, cast and ductile iron, GRP, most plastic and other material.
Pressure up to 64bar
GRIP-Z is Reinforced coupling of GRIP-G. Have the same performance of GRIP-G and with higher pressure. Two anchor rings have progressive anchoring effect, it is easy on pipes, as pressure increased, so does the gripping effect. GRIP-Z offers high levels of security by locking pipes together under pressure. GRIP-Z working pressure up to 64 bar. Temperature range: -30℃ up to 180℃, material in SS304, SS316 and SS316TI. It suitable for most applications in building construction, civil engineering, power, machinery component, shipbuilding, offshore industries, industrial process pipe work and others.
GRIP-Z Technical parameters
| Pipe outside diameter | Clamping range | Working pressure | Product O.D. | Width | Distance between sealing slips | Setting gap between pipe ends | Torque rate | Bolt | |||
| O.D. | Min-Max |  |
 |
Φ D | B | C | without strip insert | with strip insert (Max) | |||
| （mm） | （In.） | （mm） | (bar) | (bar) | (mm) | (mm) | (mm) | (mm) | (mm) | (Nm) | M |
| 30 | 1.181 | 29-31 | 32 | 64 | 47.5 | 61 | 17 | 3～5 | 10 | 20 | M8×2 |
| 33.7 | 1.327 | 32-35 | 32 | 64 | 51.5 | 61 | 17 | 3～5 | 10 | 20 | |
| 38 | 1.496 | 37-39 | 32 | 64 | 58.5 | 61 | 17 | 3～5 | 10 | 20 | M8×2 |
| 42.4 | 1.669 | 41-43 | 32 | 64 | 62.8 | 61 | 17 | 3～5 | 10 | 20 | |
| 44.5 | 1.752 | 44-45 | 32 | 64 | 64.9 | 61 | 17 | 3～5 | 10 | 20 | |
| 48.3 | 1.902 | 47-49 | 32 | 64 | 68.7 | 61 | 17 | 3～5 | 10 | 20 | |
| 54 | 2.126 | 53-55 | 30 | 64 | 74.5 | 76 | 33 | 5～10 | 15 | 20 | M8×2 |
| 57 | 2.244 | 56-58 | 30 | 64 | 77.5 | 76 | 33 | 5～10 | 15 | 20 | |
| 60.3 | 2.374 | 59-61 | 30 | 64 | 80.7 | 76 | 33 | 5～10 | 15 | 20 | |
| 66.6 | 2.622 | 64-68 | 30 | 64 | 90.7 | 96 | 37 | 5～10 | 25 | 40 | M10×2 |
| 70 | 2.756 | 68-71 | 25 | 64 | 94 | 96 | 37 | 5～10 | 25 | 40 | |
| 73 | 2.874 | 72-74 | 25 | 64 | 97 | 96 | 37 | 5～10 | 25 | 40 | |
| 76.1 | 2.996 | 75-77 | 25 | 64 | 100.2 | 96 | 37 | 5～10 | 25 | 40 | |
| 79.5 | 3.130 | 78-81 | 25 | 64 | 103.6 | 96 | 37 | 5～10 | 25 | 40 | |
| 84 | 3.307 | 83-85 | 25 | 64 | 108 | 96 | 37 | 5～10 | 25 | 40 | |
| 88.9 | 3.500 | 88-90 | 25 | 64 | 113 | 96 | 37 | 5～10 | 25 | 40 | |
| 100.6 | 3.961 | 99-102 | 22 | 60 | 125 | 96 | 37 | 5～10 | 25 | 40 | |
| 101.6 | 4.000 | 100-103 | 22 | 60 | 125.7 | 96 | 37 | 5～10 | 25 | 40 | |
| 104 | 4.094 | 103-105 | 22 | 60 | 128 | 96 | 37 | 5～10 | 25 | 40 | |
| 108 | 4.252 | 106-109 | 22 | 60 | 132 | 96 | 37 | 5～10 | 25 | 40 | |
| 114.3 | 4.500 | 113-116 | 22 | 50 | 138.4 | 96 | 37 | 5～10 | 25 | 40 | |
| 127 | 5.000 | 126-128 | 22 | 50 | 153.5 | 111 | 54 | 5～10 | 35 | 60 | M12×2 |
| 129 | 5.079 | 128-130 | 22 | 50 | 155.5 | 111 | 54 | 5～10 | 35 | 60 | |
| 130.2 | 5.126 | 129-132 | 22 | 50 | 156.8 | 111 | 54 | 5～10 | 35 | 60 | |
| 133 | 5.236 | 131-135 | 22 | 50 | 159.5 | 111 | 54 | 5～10 | 35 | 60 | |
| 139.7 | 5.500 | 138-142 | 22 | 50 | 166.3 | 111 | 54 | 5～10 | 35 | 60 | |
| 141.3 | 5.563 | 140-143 | 22 | 50 | 167.9 | 111 | 54 | 5～10 | 35 | 60 | |
| 154 | 6.063 | 153-156 | 22 | 50 | 178.9 | 111 | 54 | 5～10 | 35 | 60 | |
| 159 | 6.260 | 158-161 | 22 | 50 | 185.5 | 111 | 54 | 5～10 | 35 | 60 | |
| 168.3 | 6.626 | 167-170 | 22 | 50 | 191.5 | 111 | 54 | 5～10 | 35 | 60 | |
GRIP-Z Material Selection
| Material / Components | V1 | V2 | V3 | V4 | V5 | V6 |
| Casing | AISI 304 | AISI 316L | AISI 316TI | AISI 304 | ||
| Bolts | AISI 316L | AISI 316L | AISI 316L | AISI 4135 | ||
| Bars | AISI 316L | AISI 316L | AISI 316L | AISI 4135 | ||
| Anchoring ring | AISI 301 | AISI 301 | AISI 301 | AISI 301 | ||
| Strip insert (optional) | AISI 301 | AISI 301 | AISI 301 | AISI 301 |
Material of rubber gasket
| Material of seal | Media | Temperature range |
| EPDM | All quality of waters,waste water, air, solids and chemical products | -30℃ up to+120℃ |
| NBR | Water,gas, oil, fuel and other hydrocanbons | -30℃upto+120℃ |
| MVQ | High temperature liquid, oxygen, ozone, water and so on | -70℃ up to+260℃ |
| FPM/FKM | Ozone, oxygen, acids,gas, oil and fuel (only with strip insert) | 95℃up to+300℃ |
Benefits of GRIP Couplings
1. Universal use
Compatible with any traditional jointing system
Joins pipes of the same or dissimilar materials
Quick and simple repairs of damaged pipes without service interruptions
2.Reliable
Stress-free, flexible pipe joint
Compensates axial movement and angular deflection
Pressure-resistant and leak-proof even with inaccurate pipe assembly
3.Easy handling
Detachable and reusable
Maintenance free and trouble free
No time-consuming alignment and fitting work
Easy installation technology
4.Durable
Progressive sealing effect
Progressive anchoring effect
Corrosion resistant and temperature resistant
Good resistant to chemicals
Long service time
5.Space-saving
Compact design for space-saving installation of pipes
Light weight
Needs little space
6.Fast and Safe
Easy installation, no fire or explosion hazard during installation
No cost for protective measures
Absorbs vibration /oscillations