The Original GS-Retain Ring Flange System
The GS-Retain Ring Flange System provides a fast and easy method of connect pipes. Connections are made with the highest quality and reliability, completely leak-free with high joint integrity, while still being cost efficient. The GS-Retain Ring Flange System allows piping systems with workings pressures of up to 690 bar to be assembled without welding. The wide range of flanged fittings includes tees, elbows and threaded adaptors in a pipe size range from 26 to 355 mm.
The GS-Retain Ring Flange System provides a compact, high pressure joint, in which the flanges are held to the pipe by a flexible stainless steel retain ring, which sits in a machined groove on the pipe end. The bonded seal between pipe faces ensures tight sealing when tightening the screws.
Approved By
- DNV GL DNV GL Group
- LR Lloyd's Register of Shipping
- ABS American Bureau of Shipping
- BV Bureau Veritas
- RINA Registro Italiano Navale Group
- RS Russian Maritime Register of Shipping
- NKK Nippon Kaiji Kyokai
- CCS China Classification Society
- KR Korean Register
GS-Retain Ring Technical Data
| SAE 3000 | SAE 6000 | SAE 6164 | |
| Pressure* [bar] | 210-350 | 420 | 210-690 |
| Size [Pipe] | 26x6-97x12 | 26x6-97x12 | 60.3x11.04-355.6x41.4 |
| Size [Flange] | 1/2"-3" | 1/2"-3" | 2"-14" |
| Material [Pipe] | Carbon steel, stainless steel, duplex, super duplex, titanium | ||
| Material [Flange] | Electric zinced carbon steel, hot dip galvanized carbon steel, stainless steel or titanium | ||
| Material [Seal] | NBR, Viton | ||
| Material [Retain Ring] | Stainless Steel | ||
Numerous Application Possibilities
The GS-Retain Ring Flange System is used in a broad range of high pressure piping applications, in a wide variety of industries ranging from marine and offshore to different land-based industries. The GS-Retain Ring Flange System is utilized within the Offshore Industry for hydraulic, mud, cement, high pressure water and other high pressure piping systems. High quality, quick assembly, and no “hot work” allow for safe and cost effective installation compared to conventional welding on oil drilling platforms. Within the Marine Industry the GS-Retain Ring Flange System is used extensively for hydraulic and other piping systems, where the reliability and inherent cleanliness, fast installation times and flexible engineering bring major time and cost benefits. The GS-Retain Ring Flange System is utilized by a wide variety of Land-based industries, for instance in metals & mining, wood & forestry and in many demanding testing facilities for its flexibility, precision, inherent cleanliness and reliability
GS-HP Retain Ring System™
GS-Hydro’s new innovative GS-HP Retain Ring™ pipe connecting method allows piping systems with workings pressures up to 400–420bar to be assembled without welding. The GS-HP Retain Ring™ system provides a fast and easy method to connect pipes with the highest possible quality and reliability, completely leak-free with high levels of joint integrity in the most efficient manner.
Approved By
- DNV GL DNV GL Group
- LR Lloyd's Register of Shipping
- ABS American Bureau of Shipping
- BV Bureau Veritas
- RINA Registro Italiano Navale Group
- RS Russian Maritime Register of Shipping
- NKK Nippon Kaiji Kyokai
- CCS China Classification Society
- KR Korean Register
Connection Technology
The GS-HP Retain Ring™ system provides compact, high pressure joint, in which the flanges are held to the pipe by solid retain ring halves which are sitting in a machined groove on the pipe end. The bonded seal between pipe faces ensures tight sealing when tightening the screws. This new system has been subjected to rigorous burst and impulse testing. The HP-retain rings, flanges and screws absorb the axial forces and shocks. The combination of retain rings and flanges strengthens the pipe (at the location of the groove) in such a manner that connection is stronger than the pipe itself! GS-Hydro provides various alternatives where new HP-system can be used. This flange system corresponds to ISO 6162-2 SAE J618 bore pattern (6000 psi) for nominal sizes 24–32 (1 1/2”–2”) and ISO 6164 (350–400 bar) bore pattern for nominal sizes 40–48 (2 1/2”–3”).
- Pipe to pipe connections
- Flange to port connections
- Pipe to block connections
- Hose fitting connections
- Male / female thread connections
- Welding hub connections (in the case of connecting to welded systems)
- Reducer connections
- Vibra bulkhead connections
The GS-HP Retain Ring™ system can be used in a broad range of high pressure piping applications in a wide variety of industries ranging from offshore and marine to various industrial piping systems. The new retain ring system is suitable for various media e.g. high pressure hydraulic oil, lubricating oil fuel oil, sea and fresh water. This new innovation will provide special benefits in the most demanding applications like with pipe and hose connections where hydraulic system and its components are effected by pulsating load, shocks and constant vibration. The GS-HP Retain Ring™ system provides a proven, reliable and leak-free piping solution. New design and improved characteristics lead to a minimised need for maintenance, repair or replacement of piping components. The new innovation is widely patented in several countries.
The Unique Characteristics of the GS-HP Retain Ring System
The excellent sealing performance and very high mechanical strength of new HP-invention has been proven by external testing laboratories. New type of connection technology allows much higher external loads and has unique resistance against external loads. GS-Hydro´s HP Retain Ring connection is the right solution when the final customer application is using thick wall pipes (wt > 8 mm) , high working pressures (up to 400420 bar) and in applications where the pipe connections are under specific stress caused by external load, dynamic impulses and vibration. Because of freely rotating flange connection and self-centering sealing element, the GS-HP Retain Ring™ connection is easy to install and certainly leak proof.