DeZURIK V-Port Ball Control Valves (VPB)
DeZURIK V-Port Ball Valves deliver superior performance and reliability required to optimize process performance. This versatile valve is designed for control of fibrous suspension applications, in addition to clean, dirty, viscous and corrosive liquids and gases.
The VPB is available in ASME Class 150 in size range 1-20" and is available in ASME Class 300 in size range 1-12". DeZURIK V-Port Ball Valves feature one-piece body construction and are available in flanged or flangeless end connections. They conform to or exceed North American and International Standards for control valves. Superior control performance is designed into the geometry of the ball for critical management of flow. A locked ball-to-shaft connection ensures no lost motion for critical control. Bearings, covers and fasteners are designed for maximum valve reliability.
When operated by a high quality DeZURIK actuator and controlled by one of many high performing positioners, the DeZURIK V-Port Ball control valve can deliver control accuracy exceeding 0.5% as measured by the leading Control Valve Diagnostics System. Control accuracy will increase process plant efficiency, improve overall profitability and reduce control valve life-cycle costs. In the event maintenance is needed, DeZURIK’s unique design facilitates fast, easy breakdown and assembly of valve components with no special tools required. The result is reduced maintenance time and the lowest overall cost of ownership.
Drop-in-place, self-aligning and interchangeable seat options offer ease in maintenance. Available seat options include reinforced PTFE, flexible metal, rigid metal and clearance.
Streamlined Flow Passages
DeZURIK V-Port Ball Valves feature a streamlined flow passage, providing maximum efficiency (Cv/Kv per valve size) and minimizing erosion inside the valve body.
Rugged, Easy-to-Maintain Construction
The heavy-duty cast body is a one-piece design for increased installed-pipe integrity and minimal potential leak paths. Stainless steel construction combined with drop-in seats and a splined shaft and ball connection makes the DeZURIK V-Port Ball Valve easy to maintain.
Utilizing computer-aided design and extensive flow-loop testing, the v-orifice was designed to provide the high rangeability and precision throttling required on fibrous suspension applications, as well as clean or dirty liquids and gases. The straight through flow passage provides maximum efficiency and excellent erosion resistance. The ball can be furnished with a range of high-alloy materials, all provided with a heat-treated nickel overlay. This overlay provides a non-porous and lubricious surface, resulting in greater corrosion resistance and less sliding friction. For abrasive and high temperature applications, a 317 stainless steel ball can be furnished with a tungsten carbide overlay or a Hastelloy C ball with nickel overlay can be provided.
The sealed-bearing option prevents media from entering the bearing areas, which can hinder valve operation. PFA Fluoropolymer or FFKM Perfluoroelastomer seals are available for bearings that need exceptional protection from scaling, plating, abrasive or polymerizing media.
The one-piece bearing provides a large area of radial support to the shaft. The shaft is fully supported, greatly reducing shaft fatigue. The 317 stainless steel wire mesh reinforced PTFE bearing has a low coefficient of friction that minimizes operating torques and reduces actuator sizing requirements. For severe-service applications, a cobalt-chromium alloy bearing is available. A sealed-bearing option is also available.
Splined Shaft with Solid Ball-to-Shaft Connection
The splined shaft and ball with locking torque screw on DeZURIK V-Port Ball Valves provide a high-strength, positive connection that effectively eliminates mechanical backlash and hysteresis. The splined connection with locking torque screw ensures accurate, precise positioning of the ball. The machined diameter of the shaft provides blow-out proof protection.
Self-Aligning Ball and Seat
The self-aligning ball and seat on the VPB valve reduces lengthy setup time during repair and reassembly. Valves can easily be returned to like-new performance without time-consuming special procedures. And because of the spring-loaded metal seat design, the ball and seat self-compensate for wear on either surface.
Laying Length Flexibility
DeZURIK VPB valves offer the ultimate in face-to-face flexibility. The solid one-piece body is available in either ASME B16.10 or ASME/ISA take-out dimensions. V-Port Ball valves are available in flanged or flangeless construction to meet individual requirements and common piping standards. For added versatility, these valves meet IEC, ISO and EN face-to-face dimensions. In plants that have an installed base of both ASME B16.10 and ASME/ISA control valves, VPB users have been able to minimize storeroom inventory by stocking valve bodies, ASME/ISA retainers and ASME B16.10 retainers. A replacement valve with either face-to-face dimension can be quickly installed. DeZURIK also offers an integrally flanged one-piece ASME B16.10 body. Laying length flexibility is one example of how the VPB can save money.
Actuator Flexibility Options
V-Port Ball valves are available with DeZURIK PowerRac® or Diaphragm actuators. The actuator top mounting pads or adapter brackets of currently manufactured DeZURIK rotary control and isolation valves (RCV, VPB, BHP, BOS) are compatible with the ISO 5211 standard. This common actuator platform increases flexibility and helps reduce spare parts inventory.
Close Coupling of Actuator to Valve
DeZURIK Diaphragm and PowerRac® actuators rigidly connect to the valve and the positioner on the actuator housing. This accurately feeds exact valve position directly to the positioner. In addition, the close coupling of the actuator to the valve makes the total package as compact as possible.
V-Port Ball Control Valves (VPB) Specifications
1-20" (25-500mm) ASME Class 150
1-12" (25-300mm) ASME Class 300
to 1000°F (540°C)
SHELL PRESSURE RATING:
to 285-740 psi (1960-5100 kPa)
Per ANSI/FCI 70-2
Flexible Metal: Class IV
Rigid Metal: Class IV
Reinforced PTFE Seat: Class VI
Clearance Seat: 5% of max flow when closed
Flanged or flangeless
Carbon steel, 316 and 317 stainless steel, Hastelloy C
Handwheel, chainwheel, PowerRac® double-acting and spring-return cylinder actuators, spring-return diaphragm actuator
- VPB V-Port Ball Valves Bulletin 15.00-1
- V-Port Ball Valves for Recycle Reject Flow Control Applications 15.01-3