The flagship of the ValvTechnologies’ product line, the V1-1, is the valve by which all other severe service metal-seated ball valves are measured. The V1-1 design includes integral seats, RiTech® hard coatings, blowout-proof stem and live-loaded packing. Primarily used in severe service applications, V1-1 valves are manufactured to each customer’s unique specifications.
The V Series’ proven seat supported design provides improved performance, far beyond the capability of linear operated valves which feature obstructed and torturous flow paths. ValvTechnologies’ design and construction delivers the extra safety margin so crucial to maintaining productivity: customers benefit by realizing increased security, less downtime and lower maintenance.
V1-1’s are engineered to be leak-free, maximize flow and reduce the overall cost of ownership. So confident of their performance, only ValvTechnologies’ V1-1 valves are backed by the best four year, zero-leakage warranty in the industry*.
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.
Backpressure protected sealing. Standard with the V1-1 valves, the design prevents the upstream spring from collapsing in a reverse flow condition, protecting the internals from damage and guaranteeing shutoff in the reverse direction.
Zero-leakage shutoff. ValvTechnologies tests every valve according to ANSI procedures, however, we toughen the standard and define zero-leakage as no detectable leakage of gas or a liquid for a period of three minutes or greater. The ValvTechnologies’ standard is zero drops and zero bubbles, guaranteed.
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
Four-year warranty*: The very best in the industry. Includes internal seat leakage & external leakage through the packing &/or body seal. Benefit: Lower cost of ownership, increased reliability
*steam and water applications
Case Study: Outperforming the competition
Location: Russia Product: Autoclave discharge block valve Industry: Mining and minerals
Challenge: To achieve 500 cycles and 50 hours operation without failure of the valve, during an accelerated product trial
Solution: The test took take place during the test / elaboration of the autoclave POX- technology of the gold bearing sulphide concentrate into the pilot autoclave line. The purpose of the pilot plant is to test different coating technologies to find a solution for the inherent problems in other valve designs and coating technology during this difficult process. The AbrasoBlock® integral seat design valve was installed in the pilot plant and trial commenced.
Result: As of June 2018, the trial valve has successfully achieved 33 hours and 585 cycles of operation. This by far out performs all other manufacturers’ autoclave block valves trialed. The end-user will proceed into commercial supply agreement for valves to be installed in their industrial autoclaves.
All dimensionsal data is approximate, contact factory for certified dimensions
Bill of Materials
Since the pipe I.D. and corresponding transition from valve I.D. to pipe I.D. has a critical impact on the Cv of the valve, we have devised the above table. This table gives the Cv based on industry standard pipe and also the maximum Cv of the valve only. For Cv with other pipe I.D. or bore size, consult factory. Cv values are approximate, contact factory for exact Cv values.;
HVOF RiTech® Coatings
Insulating jackets: For further protection valves can be fitted with removable and reusable valve insulation blanket jackets
Mounting hardware: ValvTechnologies’ external stop mounting hardware minimizes or eliminates stem and sealing performance problems caused by a faulty re-installation of an operator on an automated valve
Special end connections available
Class V sealing in the reverse direction
Complete automation packages available
Oval hand wheel
Fossil Power Applications
Above and below seat drains
Attemporator spray control
Boiler feed pump isolation
Continuous boiler blowdown
Feedwater heater drains
Main steam stop
Seal steam regulators
Sight/gauge glass drains
Soot blower regulators
Turbine bypass systems
Nuclear Generation Applications
Circulating water system
Condensate cooling water
Fire protection system
HP safety injection
HP & LP heater drains
Heat exchanger vent & drains
Main steam system isolation, drain & vent
Power operated relief valve (PORV)
Pressurizer drain & vent
Rad waste system
Reactor coolant pump drain & vent
Reactor head vents
Reactor water cooling vents & drains
Safety injection system
Secondary system isolation, drain & vent
Service water system isolation
Steam generator system
Turbine drain & vent
Fukushima tie ins
Reliable hardened vents
Upstream Oil and Gas
Wellhead choke isolation
Compressor recycle and isolation
Sour gas isolation and control
Steam, water and gas injection
Pig launcher and receiver
Mud drilling isolation and check
Lean & rich amine isolation
Molecular sieve regeneration isolation
Molecular sieve absorber isolation
First and second stage separator isolation
Downstream and Chemical Processing
Coking (delayed & flexi)
Overhead vapor line
Cutting water isolation
Fluidized catalytic cracking
Slurry isolation & control steam