Special Application Solutions
SCORE VALVES’ comprehensive specialty application and manufacturing experience includes: carbon, alloy, stainless, super austenitic, and duplex steels; bronze; monel; inconel; hast and titanium materials, as well as specialty surfacing including: HVOF, flame spray, chrome, nickel, copper and silver plating, ceramic, TFE, PTFE and Ti-Nitride plasma vapor deposition coatings.
Specialty option experience for the variety of chemical process application solutions include; specialty flange ends to ASME, AWWA, DIN, O-ring and Clamp Joint ends; steam/heat transfer liquid tracing; cryogenic & high temperature extensions; LOX/LH2 polymer seat; ccw to close; block and bleed to OSHA and API; 3-way linked valves; splined high-vibration; controlled orifice disc; vacuum service; purged packing and bearings; outboard bearings; live loaded packing; orifice plates; spool pieces/ spacer plates; heat shields; gear and actuator rigid and flexible extensions; process controlled NDE/ weld metallurgy/ heat treatment/ NACE MR0103 & MR0175/ NASA specs./ welding/ material origin; FDA audited cleaning to O2, Cl2, pickled and passivated to ASTM; testing to cryogenic BS6364, MSS and NASA specs.; high temperature testing to 1400F; and fugitive emission testing.
Global competition in pulp and paper means operators are looking for cost effective valves to stay up and running. TRICENTRIC® valves can be found in all steps of the pulping process: the recovery area, stock prep, paper making and within the bleach plant.
SCORE VALVES’ application and manufacturing experience for municipal service includes: district heating; potable water; water-wastewater distribution and flow control. The install base of TRICENTRIC® and HIGHSEAL® valves includes valves to 84” and class 300 rating to both ASME and AWWA design standards.
SCORE VALVES TRICENTRIC® has over 30 years of install base experience in various aerospace, wind tunnel and engineering test facilities to 96” diameter for customers including: NASA Stennis and Kennedy, US Arnolds Airforce Base, Cape Canaveral Lockheed Martin and Aerojet Rocketdyne among others. Applications include: wind tunnel flow/ pressure control, Launch pad sound suppression, Mobile Launch valves, Launch pad/ rocket test stand LNG, LOX, GOX, LH2 fuel flow, transport and storage- control and isolation valves.
SCORE VALVES’ sea water, brine and recycle water applications include: Desalination facilities; drilling rig topsides fire suppression systems; tailings ponds and cooling recycle water with high chloride content. Valve material selection and processing require special consideration for general corrosion, pitting resistance and chloride stress corrosion cracking resistance. Valves manufactured include: alloy 20, duplex, super duplex, super austenitic, bonze, monel and inconel with component materials selected for optimal application performance. Customers include Pertrobras off Brazil, Talisman off Malaysia as well as North Sea installations.
TRICENTRIC® valves are designed for temperatures to 1500° F and higher.
The valve’s all metal robust construction and metal-to-metal unique geometry design provides tight shut-off without any jamming – even at high temperature differential. The selection of materials and design options is determined according to temperature, media and pressure conditions. Extended bonnets are used above 975 F to ensure effective packing sealing. Installed valve high temperature materials include: CF8H; CF8MH; CF8CH; CY-40 and CW6MC, to 84” CL 300 in size.
TRICENTRIC® Reduced Port valves have closure elements where the flow area of the port of the disc is less than the area of inside diameter of the pipeline or pipe flange. Reduced port valves are primarily used in applications involving: Steam jacketed piping or control valves for control of fluid flow. The use of the reduced port style valve for jacketed piping ensures the industry standard gasket sealing width is maintained to eliminate emissions and leakage. Reduced port capacity is used in control valve applications for several reasons including:
- It adapts a valve large enough to handle increased future flow requirements with port capacity properly sized for present needs.
- A valve with adequate structural strength can be selected and still retain reasonable travel vs. capacity relationships.
- A valve with a large body using a restricted port can be used to reduce inlet and outlet fluid velocities.
- It can eliminate the need for pipe reducers.
- Errors in over sizing can be corrected by use of a restricted capacity port.
SCORE TRICENTRIC® Reduced Port valves can be constructed in wafer, lug or double flanged styles, of all available wrought and cast materials with any combination of trim materials and valve options.
Stocked cl150 Wafer valve sizes include: 4”x3”; 6”x4”; 8”x6”; 10”x8” and 12”x10” with other sizes, classes, materials and styles available per order.
For standard service, TRICENTRIC® valves incorporate graphite bearing protectors as standard, which provide protection against media build-up in the bottom bearing area as a result of vertical shaft installation. But when media contains abrasive entrained particulate or when there is potential for media precipitates, bearing options are available to ensure long term valve performance in harsh applications. These conditions can cause wear, galling and binding resulting in increased actuation torque and reduced service life.
TRICENTRIC® offers the following solutions:
- Energized Seals/ O-rings: are incorporated to provide a pressure seal to mitigate particulate migration into bearing areas.
- Bearing Purge/ Lubrication: Incorporates a fluid passage through the body to a lantern ring between the packing and bearing. This fluid passage flushes any media or contaminants from the bearing areas to maintain proper bearing operation.
- Outboard Bearing Design: Applied where severe service conditions are such that bearing wear and binding are likely to occur but the options of bearing protection and bearing purge/lubrication will not effectively overcome this problem or cannot be applied due to temperature, abrasiveness or purge/lubrication fluid compatibility issues. Outboard bearings are installed outside the pressure envelope (packing) thereby making them unaffected by media fluid composition. Design, materials and details of construction are application specific
Specialty Control options are available for the TRICENTRIC® valve including:
- Controlled orifice port/disc design: to provide a specific minimum or maximum flow condition.
- Control Cartridges: to provide linear flow curve.
- Splined Disc connection: to ensure mechanical integrity in high vibration/ noise/ pressure drop services.
Erosion resistant options are available for TRICENTRIC® valves to resist the 4 principle types of erosion:
- Abrasive particles
- High liquid velocity impingement (high velocity gas is dangerous only if droplets of liquid or solids are present).
With the exception of erosive corrosion, a high degree of hardness is required to resist erosive conditions. For erosive corrosion, where the surface oxide layer, typical of stainless steels, is eroded and subsequent corrosion takes place, more noble materials must be used, such as monel, hast or inconel.
Hardsurfacing of specific or all component surfaces when required, based on application details, is available using HVOF, flame spray or welding processes for deposition of cobalt alloy 21, cobalt alloy 6 or other erosion resistant materials. Hardsufacing may also be required for nonstandard conditions including: high cycling; throttling; high vibration; quick closure or high thermal cycling/ ramping.
TRICENTRIC® valves are available as reduced pressure class where the internal components design has a lower ASME class rating than the body shell ASME class rating. The valve internals ASME rating is based on the standard design, differential pressure rating and not on limitations or reductions based on material selection.
- Reduced process differential pressure conditions
- Throttling service
- Code or standards requirements of increased body shell pressure class.
In specific applications the use of reduced pressure class valves will allow for:
- Reduced valve cost resulting from lower internal component costs;
- Reduced actuator costs resulting from lower actuation torque (static and dynamic) requirements and actuator downsizing;
- Reduced piping supports and/or piping stresses resulting from lower valve and actuator assembly weights;
- Feasibility of the application of a butterfly valve where full rated ASME class internals would be unavailable or dimensioning impractical (e.g. 3” cl1500 ASME x cl300 ASME);
- Increased flow capacity resulting from CV values of lower ASME class internals allowing reduced pressure drops and greater control capability as the linear portion of the control curve is extended relative to a higher ASME class.
TRICENTRIC® valves are available in all ASME B16.34 materials as well as specialty Non-ASME listed materials that are registered for pressure service to ASME B31.3 and have been installed in service, including:
- Ni Al Bronze- B148 Gr. C95500
- Super Duplex 2507- A890 Gr. 5A
- Monel 400- A494 Gr. M30-C
- Hast. C- A494 Gr. CX2MW
- Inc. 600- A494 Gr. CY40
- Inc. 625- A494 Gr. CW6MC
- Nickel 200- A494 Gr. CZ100
- Titanium 2 and 3- B367 Gr. C2 & C3; B381 Gr. F2 & F3
SCORE VALVES’ High Purity applications include: medical gas production and distribution; commercial drug production projects as well as food and beverage installations. Designs incorporate: TRICENTRIC® Triple offset, non-rubbing, friction free shut off throughout full pressure to vacuum rating range, resilient material selection to minimize out gassing, non-particle shedding components, a wide selection of materials to suit specific service conditions, the ability to seal in either direction – suitable for alternating vacuum – pressure processes, close control of valve tolerances and finishes to ensure a long cycle life, minimal cavities to nearly eliminate trapping of media and FDA approved clean room assembly.
SCORE VALVES’ Man Safe and Process Safe applications include: OSHA requirement for block and bleed requiring two individual valve disc assemblies with a bleed space between to allow monitoring and ensure a man safe environment downstream of the valve, per API the use of one disc assembly with two seals incorporating a bleed off port between the seals allowing for bleed off and monitoring to ensure a process safe environment downstream of the valve. Both options are supplied by SCORE VALVES and are available to 96” diameter.
TRICENTRIC® valves are available to suit industry and end user specific specialty flange ends and facings to ASME, AWWA, DIN, RTJ, Male tongue and female groove, o-ring and clamp joint ends as well as special finishes and concentric grooving.
TRICENTRIC® and HIGHSEAL® valves are available for applications requiring submerged service or remote mechanical operation with: gear/ actuator watertight housings, gear/ actuator extensions and hand wheel extensions (rigid and flexible). Other specialty options include 3 way linkages.
TRICENTRIC® valves are available with specialty surfaces including coatings, plating and treatments both externally and internally for erosion prevention and corrosion protection. Options include: HVOF; flame spray; chrome, nickel, copper and silver plating; ceramic, TFE, PTFE and Ti-Nitride plasma vapor deposition coatings. Surface treatments include: nitriding and elecro-polishing as well as pickling and passivation.
TRICENTRIC® valves are available with supplemental testing: cryogenic conditions to BS6364, MSS, NASA or End User specifications; high temperature leakage and performance testing to 1400F; and fugitive emission testing to Method 21. TRICENTRIC® valves’ comply with ISO 15848 and Method 21 tests. This includes cycle testing valves up to 5000 times over three thermal cycles, from ambient to 350° F with no packing adjustments required over the duration of the test.