Severe Service Valves
At Conval, we specialize in high-performance valves for demanding applications. For over 50 years in business, our products have found use in a wide range of industries, including chemical processing, mining, oil and gas, and power generation (fossil and nuclear). Our extensive experience, combined with our differentiating technical expertise in valve design, manufacturing, in-depth application knowledge, and long-lasting customer relationships enables us to provide customers with solutions that offer superior product life cycle and performance.
Overview of Severe Service Valves
Valves can be classified into two main categories: general purpose/commodity and severe service. The design, manufacturing and quality considerations for the various applications in each category are incorporated accordingly. General purpose/commodity valves are suitable for standard (i.e., non-severe) applications, where severe service valves are suitable for more demanding applications. Using the right configuration for a particular application is essential since the wrong choice can lead to equipment failure and, consequently, loss of product, potential safety hazards and costly downtime.
Regarding severe service valves, applications typically involve the following conditions:
- Extreme (very high/low) temperatures. Severe service valves withstand use in temperatures below -400° F or above 1,200° F without leaking or failing.
- Excessive or fluctuating pressures. Severe service valves maintain sealing integrity when exposed to high pressures or fluctuating pressure conditions.
- Abrasive or corrosive media. Severe service valves incorporate materials of construction that are not susceptible to damage from abrasive (e.g., solids, sediments, or particulate matter) or corrosive (e.g., strong chemical) media.
When Are Severe Service Valves Needed?
As indicated above, severe service valves are used in applications with extreme temperatures, high pressures, and/or abrasive or corrosive media. They are specially engineered to withstand these conditions without failing. Other situations where severe service valves may be needed include those involving:
- Cryogenic fluids
- Fugitive emissions
- Lethal fluids
- Slurries
- Steam
- Tight closures
In addition to these applications, any company operating a high-risk process would benefit from the additional durability and reliability provided by severe service valves.
Severe Service Valve Industries
Many industries utilize severe service valves to ensure durable and reliable performance in their demanding applications. Some examples of industries that commonly use them include:
- Chemical and petrochemical
- Metal and mineral mining
- Urea manufacturing
- Oil and gas
- Power generation (fossil and nuclear)
- Pulp and paper
Severe Service Valves at Conval
Conval offers a broad selection of valves engineered to suit challenging work environments. They are available in a variety of styles with various features and specifications to suit different applications. Note that all Conval designs can be supplied in standard materials, including ASTM A105, F11, F22, F316, F91, F92 and custom materials such as Monel®, Hastelloy®, Inconel®, duplex and super duplex materials and others as specified by our customers. Conval products can be supplied with all end connection options.
CLAMPSEAL® Globe Valves
CLAMPSEAL globe valves eliminate unnecessary complexity through the use of standardized internals regardless of the valve body style. They deliver the highest degree of versatility and are completely customized to each customer’s requirements. Clampseal Globe valves are available in three body styles: Y, Angle, and T-pattern. Because the design consists of internal parts that are completely interchangeable, spare parts inventories may be kept at lower levels.
These valves are available in standard sizes through 4 inches and ASME pressure classes through 4500#.
Swivldisc® Gate Valves
Swivldisc gate valves excel in high-pressure and high-temperature applications. They are available in a wide variety of end connections and feature a low emissions gate valve design. They achieve perfect alignment using an innovative, flexible disc to deliver a tight seal that isn’t possible with standard wedge gate valves. The simple and effective CLAMPSEAL pressure seal bonnet provides ready access for servicing with no welds to cut or seal rings or gaskets to replace. The body-to-bonnet joint integrity is maintained through countless thermal cycles. The fine finish of the stem and chamber combines with high performance graphite packing to ensure long packing service life.
These valves are available in standard sizes through 4 inches and ASME pressure classes up to intermediate 3500#.
Camseal® Ball Valves
Designed for extremely demanding high-pressure and high-temperature applications, Camseal ball valves ensure zero body, stem seal, and seat leakage. They feature a top entry, single forged body design which facilitates long service life and in-line rebuilding with no welding or stress relieving required. They are available in three metal seating configurations, depending on the needs of your application. The low emissions ball valve design delivers low life cycle costs and is available in a wide selection of end connections.
These valves are available in standard sizes through 4 inches and ASME pressure classes through 4500#.
Steam Whisperjets
Conval’s innovative Whisperjets are designed to provide cavitation-free pressure letdown where processes require large pressure drops. Through a multitude of pressure reduction stages, Whisperjet assemblies create impinging flow patterns that dissipate energy without significant wear to the control surfaces, handling pressure drops safely and affordably. With this product, steam flows through a series of computer-designed pressure reduction stages, assuring extremely long service life. By preventing sonic flow and critical pressure drops from occurring, fluid velocities and sound levels are minimized. Due to their simple design, Whisperjets are a low-cost solution to velocity problems that may be encountered in piping systems. They may be applied in conjunction with a valve or as independent pipeline components.
Whisperjets are available in ASME pressure classes through 4500#.
Clampseal® Check Valves
In applications requiring protection against reverse flow, Clampseal check valves are a versatile solution. They control fluid flow using only two moving parts, ensuring long-term, reliable operation. These valves are available in multiple body sizes and in Angle, T, and Y-patterns as well as in piston, ball, and stop check configurations. Clampseal check valves provide reliable performance through countless pressure cycles. They are easily serviced since the pressure seal bonnet design does not include welds that need to be cut nor any gaskets that require replacing.
These valves are available in standard sizes through 4 inches and ASME pressure classes through 4500#.
Any standard Conval valve can be configured to meet customer specifications. Standard valves are made using a modular design with interchangeable parts, making it simple to alter standard valve designs to meet the unique demands of each application. Our team can help you select the best valve type with customized options for your application.
Conval: High-Performance Valve Solutions for Demanding Applications
Conval is a trusted process industry supplier of innovative severe service valve products. We offer the most customizable high-performance flow control solutions in the market. If you need a product you can rely on to perform in your demanding applications, we’ve got you covered. Our valves can withstand extreme pressures, high and low (cryogenic) temperatures, and abrasive/corrosive media with industry leading product life-cycle and performance. Additionally, they quickly achieve ROI goals as a function of service life and ease of in-line maintenance. To learn more about our valve products and why you should invest in them, contact us today. To get started on your solution, request a quote.