In the embodiment shown in figure 1 a piston 7 operates within a flow cage 8 to provide a. Streamlined flow path through the fullport expanded body. See who you know at mokveld valves, leverage your professional network, and get hired. Mokveld to supply control valves for asgard subsea. Ansi pressure rating size 150 300 600 900 1500 2500 2 26 27 29 51 51 67 3 50 53 55 70 105 145 4 63 71 80 125 155 235 6 105 110 160 250 320 535 8 184 190 255 435 560 870 10 250 280 410 660 940 1580 12 350 400 560 970 1460 2370 14 450 540 700 1220 1920 16 610 720 980 1610 2580 18 800 930 1280 1940 3250 20 970 1150 1620 2490 4150. Process downtime and maintenance costs are reduced. Mokveld brochure axial control valve 1 valve actuator. A significant rise in velocity can produce noise beyond safe limits. Sponsored by mokveld icewebs severe service valves page contains technical information on valves which are subjected to arduous process consitions. At mokveld, we believe that the worlds growing demand for energy can be fulfilled in a sustainable manner.
The axial control valve is integrally cast and consists of an expanded outer body and an inner body which is positioned in the center by means of ribs. However, in order to ensure you continue to benefit from valves that offer high capacity and safety as standard, we offer a range of modernisation services. Mokveld valves iro netherlands suppliers catalogue. Several operators recognized the unique advantages of mokveld s axial flow design in topside severe service control applications and approached mokveld to investigate the axial flow concept as the basis for a subsea control valve. All valves are fullbore, throughconduit and will allow the passage of various pipeline inspection gauges and spheres. In 1882, william mason invented an automatic steam reducing valve. Mokveld valves mission is to continue to strive for market and technology leadership within the hydrocarbon and water production, transportation and processing markets, by designing, manufacturing and providing high integrity valve systems and associated services for demanding control, conditioning and protection applications. For more detailed information, please contact mokveld. A copy of our qhsemanual can be submitted on request. It is mokveld s philosophy to avoid cavitation instead of to withstand cavitation. Mokveld angle choke valve brochure mokveld marketing. Nijverheidsstraat 67 po box 227 nl2800 ae gouda the netherlands. Mokveld provides the gas, oil and water industry with expert knowledge and advanced engineered valve systems for critical control and safety applications. The highcapacity proportional pilot design allows fast response and will eliminate the dangers of a pressure surge.
These valves have an unsurpassed record for reliability in applications where the shutoff valve must maintain 100% tight shutoff capacity, even after extended. Subsea gas compression is a technology approach that can boost recovery rates and lifetimes of offshore gas fields. Mokveld marketing, ukrainiandutch joint venture, has been representing the interests of mokveld valves, dutch company, for more than 20 years in the territory of the countries formed after the breakup of the soviet union. Here is the angle choke valve displayed with a low power actuator. The highcapacity proportional pilot design allows fast response to surge pressure.
The fls gate valve is available in nominal sizes ranging from 116 in to 11 in and working pressures from 2,000 to 20,000 psi 7. Mokveld product overview download file mokveld valves. The fls gate valve is the standard valve for critical requirements, including extreme sour gas applications. This low shear valve system minimizes droplet breakup and the formation of tight emulsions, improving separation and increasing separation capacity. One of the technology gaps to be addressed was the development of large fastacting subsea control valves. Closing times are adjustable between 3 and 40 seconds.
Therefore mokveld check valves offer the lowest pressure loss on the market. As the velocity of the fluid increases, the noise generated by turbulence in the fluid also increases. Small, springopposed actuators can also be selected for. Mokveld, experts in axial valves systems mokveld contributes to safe, reliable and sustainable development of our worlds natural oil, gas and water resources. After 30 years in service, many mokveld valves are still maintenance free. Maxseal solenoid valves produced by fcx thompson valves consistently set rigorous standards for process management in the most demanding environments. Mokveld shutoff valves assure bubble tight shutoff over the full pressure range, even under the most severe working conditions. Accurate control is possible also with minimum opening because of the fully pressurebalanced trim.
The early days mokveld was founded in 1922 in gouda, the netherlands, as a small. This low shear valve is based on cyclonic flow which proves to outperform labyrinth or drilled hole cage solutions in regard to shear reduction. The page will be useful to instrument engineers who are looking for quality engineering links on severe service valves. The valve disc is connected to the disc rod which slides in bearings located in the rod guide. Aker solutions at the forefront of subsea gas compression was awarded the contract by operator statoil to supply.
The product portfolio comprises a wide range of valve products, tailormade to application. Axial flow describes the inline symmetrical flow path between the. The axial anticavitation control valves carefully manage fluid velocity in all areas of the valve trim and body which prevents cavitation, vibration and noise. Mokveld marketing, ukrainiandutch joint venture, has been representing the interests of mokveld valves, dutch company, for more than 20 years in the territory of. Each and every mokveld axial flow valve is customised to meet the exact needs of your application.
The product portfolio comprises a wide range of valve products, tailormade to application and. A valve with a circular body and a rotary motion disk closure member, pivotally supported by its shaft. The fullbore design ensures a low pressure drop across the valve and less turbulence than with reducedbore valves or alternative designs of swing check valves. Because the valve has a near linear flow characteristic, it will cycle less often thus minimizing energy loss and reducing operational costs over the life of the valve. Innovate to meet 2 the early days mokveld was founded in 1922 in gouda in the netherlands, as a small machine repair shop. Mokveld axial flow shutoff valves have found worldwide acceptance across a large range of gas and liquid applications. Mokveld axial control valve product brochure mokveld valves. Advantages bidirectional sealingthe fl gate valve has a symmetrical, bidirectional.
These valves are the culmination of generations of ongoing, highquality research, and an indepth knowledge of our customers processes and. Mokveld brochure axial control valve 1 free download as pdf file. The final goal is the development of a model of the valve for twophase flow. Full range of matching mokveld pneumatic and hydraulic actuators with tailored control arrangements is available. Due to the bernoulli principle, when the fluid pressure in the valve drops, the fluid velocity rises see figures 1. Mokveld valves bv provides the gas and oil industry. Size connection type short pattern api 6d dimension rtjrf. Design details the mokveld check valve is designed to open fully at very low flow rates to minimize pressure drop during normal operation. The spring pushes the valve closed and flow dynamic forces push the valve open. Nxt puts the power of ondemand control valve selection and sizing at your fingertips. Mokveld surge relief valves are milliseconds to full capacity. Mokveld started delivering valves for the production of the billions of cubic. Mokveld axial control valves offer the following main features. Typhoon valve system is a cost efficient way to debottleneck your existing or new build separation and produced water treatment systems without requiring additional equipment.
By nature of design the axial valve has unique benefits that make the valve specifically suitable for the more special and severe service control and. The mokveld check valve normally does not require maintenance. Edition of valve and actuator user manual by 2017331. Pressure regulation a sleeve valve can be used to reduce pressure from a. It may also provide stability, guiding, balance, and alignment, and facilitate assembly.
Control valves elements for defining, sizing, and selecting training module 1 2 about trimteck trimteck is a familyowned american company with over thirty years of experience in engineering, manufacturing, and marketing flow control solutions and equipment for a. The inherent capacity of the axial valve is very high compared to conventional globe control valves and enables selection of smaller valve size. Fully trained technicians provide onsite diagnostic services using these advanced tools. This results in a prompt return to stable pressure conditions. Sleeve valves can be designed to have lower pressure drops than other types of control valves. Size connection type short pattern api 6d dimension flanged welding end flanged welding end rtjrf we rtjrf we inch kg kg kg kg 2 54 15 3 120 4 161 49 196 84 6 394 394 8 594 10 1119 12 1577 1617 note. Available integrated mokveld actuators for the angle choke valve. The product portfolio comprises a wide range of valve products, tailormade to application and customer specifications. The valve ends are available to meet any pipeline requirement. Low power electric and electrohydraulic actuation is also available. Nijverheidsstraat 67 2802 aj gouda the netherlands. Mokveld contributes to safe, reliable and sustainable development of our worlds natural oil, gas and water resources. Limited free company information from companies house including registered office address, filing history, accounts, annual return, officers, charges, business activity. Mokveld surge relief valves home mokveld marketing.
The capacity of the axial surge relief valve is extremely high. Mokveld provides an application specific valve sizing with pressure drop calculation for every valve, guaranteeing the lowest pressure loss and stable operation. Staat techniek voor jou gelijk aan wie je bent, hoe je denkt en wat je maakt. The product portfolio comprises a wide range of valve products, tailormade to application and customer. Masoneilan process control valves condensed catalog. In the 1970s mokveld was challenged to produce an angle choke valve, and pioneered. In the midfifties we started making valves, a development which accelerated when the nederlandse aardolie maatschappij b. Twophase flow, during this study, consists out of water and air. A part of a valve trim that surrounds the closure member and may provide flow characterization and or a seating surface. The mokveld check valve can be buried or installed in locations where space or weight is at a premium.
Mokveld has extensive experience in designing and manufacturing valves for the gas and oil industry worldwide. Selecting mokveld axial control valves with proven reliable performance will help to reduce costly maintenance and lost production time. The safety function of the rzdxsav is to perform a shutoff fail closefc or. The mokveld check valve is designed to open fully at very low flow rates to minimize pressure drop during normal operation. Mokveld has a long and distinguished history, starting from 1922.
Quality and certification at mokveld we consider quality and health, safety and environment to be of prime importance for the successful completion of any project. Mokveld axial check valve brochure mokveld marketing. All components operate solely on fluid static pressure to provide ultimate protection. Axial flow streamlined flow path through fullport expanded body avoids turbulence and prevents erosion and vibration. Adjustable choke valves use a stem and seat combination to control the flow rate. The unique design of axial flow valves offers a wide range of benefits, including large. Mokveld axial flow check valves are characterized by their large flow area and high pressure recovery design. Mokveld pilot operated surge relief valves a concept. The valve closes in direct response to the pressure decay at valve inlet.
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