ELEMENTS
1) Initiators (Pressure Transmitters)
HIPPS are typically supplied with three pressure transmitters that monitor the pressure in the line and provide the information to the next element.
This three elements can be selected from the same supplier or three different ones; supplying the pressure transmitters of three different brand avoid what it is call a “common fail”, for instance a quality problem in a lot of Pressure Transmitters produced by the same manufacturer that could affect to the proper performance of the HIPPS.
HIPPS is designed to be able work only with two Pressure Transmitters for a while. This is to allow to make some checking or to replace any of them with the HIPPS under operation. In such case, system is work in “degraded mode” and logic solver receives that information.
2) Logic Solvers
Logic solver is the device in charge of processing the input signals received from the initiators and it is configured to send the signal to operate the final elements, when the received input is above the preconfigured pressure value.
Ringo can supply HIPPS with different types of logic solvers:
- Central Processing Unit (CPU): software can be programmed to configure the response based on the inlet signals. This type is certified up to SIL 3.
- Solid State Logic (SSL), with a configuration of intelligent cards. This type cannot be programmed but can be certified up to SIL 4
Logic Solver can be supplied with different configurations, based on customer specifications. Cabinets with IP protection grade for hazardous area are available.
Interface with the user are customized, by instance touch screen or light and push bottoms panel.
Logic solvers can be supplied to support any communicating protocol:
- Mobdus
- OPC
- Profibus
- Send and Receive TCP
- HART
3) Final elements
Final elements have the function of isolating the downstream part of the installation from the overpressure. Typically, final elements consist of two valves with their related actuators installed in serial to be closed when the signal is received from the logic solver. Actuators may be pneumatic or hydraulic and are supplied with their own control panel, including the solenoid valves to govern their operation.
Actuators are sized to provide a very fast operation time (less than 2 seconds).
Ball Valves
Ringo Válvulas offer a full range of trunnion mounted ball valves designed and produced according to API 6D/ ISO 14313, API 6A, API 6DSS / ISO 14723, ISO 17292, ISO 14313, ISO 7121, BS5351, ASME B16.34 and other international standards as well as customer specifications on request. with all the possible configuration:
Trunnion mounted ball valves, SIL 3 Certified
| Size Range | Rating Range | Design Temperature | ||
|---|---|---|---|---|
| Construction | Side entry / Top entry | 2” to 60” | 150# to 4500# in API 6D 3000# to 15000# in API 6A |
-196 up to 550ºC |
| Seats: | Soft seated / Metal seated | |||
| Ends: | Flanged, Welding Engs, HUB |
STANDARD FEATURES
- Bidirectional flow
- Trunnion Design for Low Torque Operation
- Soft seated or Metal Seated construction
- Automatic Cavity Pressure Relief
- Anti Blow-Out Stem
- Grease Fittings
- Drain and vent
- Antistatic Device
- Fire Safe Design & Certified API 6FA, API607 and BS6755
OPTIONAL FEATURES
- Double Piston Effect
- Double Block-Bleed
- Locking Device
- Flanged grease fittings, vents and drains
- Stem extension
- Low emission packing
- Live loaded packing
- Lip seals
MATERIALS
Ringo Válvulas ball valves are supplied with all material types to fulfill all the different combinations of service fluid, design pressure and temperature. Valves can be supplied either forged or casted based on customer specifications:
- Carbon Steel for General Use
- Carbon Steel for Low Temperature
- Alloy Steel for High Temperature
- Martensitic Steel
- Stainless Steel Corrosion Resistant
- Duplex & Superduplex Stainless Steel
- Nickel Base Alloys
- Aluminium Bronze
- Titanium
- Special Materials
Materials also meet the requirements of NACE MR-0175/ISO 15156 when sour gas services are specified. Our technical staff is ready and available to provide customized material selection for those special customer applications RV always provides the customer with suitable information of material selection which is agreed prior valves are manufactured.
Further information about ball valves is available on Ringo Ball Valves brochure PRD-VBOL-ING-001-R0
Axial Valves
Design
A stream lined body with constant sectional area, offers a very reduced coefficient resistance and gives larger Cv values for the same sizes.
On entering the valve, the fluid is channeled into an annular path between the inner and outer bodies until it reaches the characterized cage.
Smooth changes in flow direction and no turbulences contribute to lower noise levels.
The high capacity, combined with the large range ability, make our axial valve to be acknowledged as the ideal design to control over the full range of process conditions with a single valve.
As an option extended body neck is offered for cryogenic operations, with a variety of sealing wafer.
Zero emission is guaranteed by the O-ring seals combined with back-up packing.
Distance between flanges is in accordance with ISA 75.03 when data are available or API 6D for larger sizes.
Actuator flanges are machined according to DIN__ or other standards.
All types of quarter turn actuator are easily mounted.
Our model RAX Cv features:
- Larger Cv value, combined with high rangeability.
- Standard at 90° reduced torque actuator.
- No backlash, low friction drive mechanism, with reduced torque requirements.
- Zero stem leakage.
- Cage guided balanced plug for smooth operation.
- Linear, equal percent or other characteristics.
- Effective noise reduction and cavitation.
- Soft seated, bubble tight shut-off.
- Variety of cage designs to handle gas and liquid critical applications.
Our RAX Cv is manufactured in sizes 4-48” and ratings up to 2500 lbs.
Body Materials
- Carbon Steel A216 WCB.
- Stainless Steel A351 CF8A.
- Other at request.
Sizes: 4” through (DN100-DN1200).
Ratings: ANSI 150-2500 lbs.
End connection: ANSI RF, RTJ, DIN …
Bolted bonnet, teflon, graphite packs, Zero emission.
Trim Materials
Standard materials:
- 410/420 corrosion resistant steel
- 316 and 316 stellited stainless steel
- 440/17.4 PH stainless steel
Special materials: Hastelloy, Monel, Colmonoy or other with hard coating, including tungsten carbide.
Shut-off ( IV, V (ANSI B16.104) Classes) metal seated or class VI soft seated.
Bidirectional tightness is also offered.
Actuators
Actuators assembled with Ringo valves for the HIPPS systems can be pneumatic or hydraulic and they are supply in full compliance with customer specifications. Actuators include the control panel as specified, with solenoid valves.
Partial Stroke Test is available on request.
