Investment in Performance.
ValvTechnologies’ investment cast version of the V1-1 severe service isolation valves pay off in low-pressure drain applications with the elimination the typical high-maintenance linear valves and allows the customer to take advantage of the benefits that come standard with the zero-leakage warranty, ensuring long service life. The V1-3 is available in both full and reduced-port models and, like all of our V series products and just as important, our HVOF RiTech® hard coatings enables the same critical mate lapped sealing surfaces – making it impervious to erosive, corrosive and abrasive services.
- Integral metal seat. With our proprietary HVOF RiTech® coating technology, the integral seat in ValvTechnologies’ valves is resistant to the attack of abrasive magnetite and ferrous oxides that may be seen in the steam flow.
- Body seal ring. ValvTechnologies employs a field proven seal ring technology to ensure sealing under all operating conditions, up to 1400°F. The body seal ring is loaded at a pressure higher than 20,000 psi. In addition, valves sized three inch and above contain a secondary Grafoil® seal to further guarantee reliability.
- Patented coating process. The sealing surfaces are overlaid with tungsten or chromium carbide using our exclusive HVOF RiTech® process. These surfaces have a hardness of 68 – 72 Rc to allow long periods of operation in the most severe conditions.
- Live-loaded gland area. The V Series’ sealing design features a four stud, live-loaded assembly designed for heavy industrial applications. The sealing material is high purity Grafoil® surrounded by stainless steel wire mesh anti-extrusion rings. The six Belleville® springs (per stud) provide constant load pressure through extreme thermal shocks and prevent wear leaks in high-cycle service.
- Blow-out proof stem design utilizes a one piece, hard-faced, blow-out proof stem that is inserted through the inside of the body cavity eliminating the possibility of blow-out through the gland area.
- Through conduit design: No tortuous flow path. When open it has the highest possible Cv’s. Minimized wear & tear. Benefit: Eliminated vibration, reduced maintenance
- Fixed position – quarter turn: No seating torques required. Benefit: Minimized stem wear, lower cost of ownership
- Hardened blowout proof stem: One piece, inserted through the body & shouldered. Eliminates the weak link of collared & pinned designs. Benefit: Improved safety
- Metallic body seal ring: Increases body integrity by eliminating external leakage. Benefit: Improved reliability, Zero-leakage shutoff
- Live-loaded packing gland: Minimum four bolt configuration with shallow stuffing box. Ensures consistent torque at variable pressures & temperatures. Benefit: Increased reliability
- Hardcoated & mate lapped seats: High Velocity Oxygen Fuel (HVOF) RiTech® chrome carbide hardcoating with a Rockwell C of up to 72. Mate-lapped seats. Benefit: Wear & corrosion resistant, increased reliability, zero-leakage shutoff
- Seat designs: Hardcoated, both ball & integral downstream seat to the end-cap to eliminate a potential leak path. Benefit: Increased reliability
- Simplicity of design: Designed for ease of installation & maintenance. Benefit: Easily actuated, increased system reliability, increased efficiencies, ease of use, reduced maintenance
- Stringent testing: Every valve is tested, documented & serialized. Benefit: Increased reliability, increased safety, total traceability
Case Study: Teamwork Builds Success
Location: Southeast United States
Plant type: Combined Cycle Power Plant
Industry: Power
Application: HP Steam
Background: During a scheduled weekend outage, a large combine cycle power plant discovered a valve that would not move. Upon further inspection, the customer found a damaged coupler on the valve’s mounting bracket. Assuming this damaged coupler was causing the valve to lock up, the customer decided against purchasing a new valve and instead simply replaced the damaged mounting bracket. Preparing to go back online, the customer found the valve would still not function.
Requirement: Immediate shipment of a V Series metal seated ball valve for main steam draining was required to avoid extended outage time.
Result: Receiving the emergency request on Saturday, ValvTechnologies quickly assembled a cross-functional team to provide the power plant with an immediate solution. Representatives from the Shipping, Warehouse and Service departments were called to the Houston office to solve the customer’s issue. The ValvTechnologies’ team was able to identify, assemble, test and ship a replacement zero-leakage valve by the end of day Saturday, the very same day the emergency request was received.
The customer received the valve Monday morning and immediately installed it. The new valve functioned perfectly and the customer was able to go back online, saving thousands of dollars in potential down time and revenue loss.
Oval hand wheel
Actuator mounting
Lock-out device
Fossil Power Applications
- Above and below seat drains
- Ash handling
- Attemporator spray control
- Boiler drains
- Boiler feed pump isolation
- Continuous boiler blowdown
- Electronic relief
- Feedwater heater drains
- Feedwater isolation
- Instrument isolation
- Main steam stop
- Recirculation
- Seal steam regulators
- Sight/gauge glass drains
- Soot blower regulators
- Startup vents
- Steam dump
- Turbine bypass systems
- Turbine drain
Nuclear Generation Applications
- Boiler feedwater
- Circulating water system
- Component cooling
- Condensate extraction
- Condensate cooling water
- Emergency feedwater
- Fire protection system
- HP safety injection
- HP and LP heater drains
- Heat exchanger vent and drains
- Main steam system isolation, drain and vent
- Power operated relief valve (PORV)
- Pressurizer drain and vent
- Rad waste system
- Reactor coolant pump drain and vent
- Reactor head vents
- Reactor water cooling vents and drains
- Safety injection system
- Secondary system isolation, drain and vent
- Service water system isolation
- Steam generator system
- Turbine by-pass
- Turbine drain and vent
- Fukushima tie ins
- Reliable hardened vents
Upstream Oil and Gas Applications
- Wellhead choke isolation
- HIPPS
- Emergency shutdown
- Compressor recycle and isolation
- Sour gas isolation and control
- Steam, water and gas injection
- Steam chokes
- SAG-D isolation
- Pig launcher and receiver
- Mud drilling isolation and check
- Lean and rich amine isolation
- Molecular sieve regeneration isolation
- Molecular sieve absorber isolation
- First and second stage seperator isolation
Downstream and Chemical Processing Applications
- Coking (delayed and flexi)
Switching
Feed isolation
Overhead vapor line
Cutting water isolation - Fluidized catalytic cracking
Catalyst handling
Slurry isolation and control steam - Ethylene
Steam decoke isolation
Furnace isolation
Steam vent
Quench oil isolation and control - Polyethylene
Isolation
High cycle (PTO)
Reactor block - Heavy oil upgrading and hydrocracking
(H-oil and LC fining)
Catalyst addition and withdrawal
Filter and pump isolation
Overhead vapor isolation and control
High delta-P isolation and control - Reforming (CCR)
Lockhopper
Isolation
Mining and Minerals Processing Applications
- High pressure slurry
Transportation Systems
Pump discharge isolation
Pipeline isolation stations
Pipeline choke stations
Rupture disk isolation
Instrument isolation - Autoclaves
Vessel feed and discharge
Acid injection
Gas injection
Steam injection - Mineral concentrators
Thickener underflow
Discharge isolation
Filter press manifold isolation
Slurry transfer systems
PRV isolation - Waste disposal
Tailings pipelines
Paste backfill
Pulp and Paper Applications
- Boiler vent and drain
- Liquor isolation and control
- Rapid drain
- Steam isolation
- Sky vents
- Dryer pressure control
- Digester steam control
- Lime mud isolation and control
Standard ValvTechnologies’ four-year zero leakage warranty in steam and water applications.
