Carilo Valve specializes in the design and manufacturing of a comprehensive range of industrial valves, including gate valves, globe valves, check valves, ball valves, and specialized high-performance valves for critical applications in sectors like oil and gas, power generation, and chemical processing. Their product portfolio is engineered to meet stringent international standards, offering solutions for everything from basic on/off service to severe temperature and pressure conditions. You can explore their full product catalog and technical specifications directly on the Carilo Valve website.
Gate Valves: The Workhorses for On/Off Service
When you need a valve for straight-line flow with minimal pressure drop, gate valves are often the default choice. Carilo Valve manufactures a robust line of gate valves designed for full open or full close service. They are not typically used for throttling, as partial opening can cause vibration and damage to the disc and seats. Carilo’s gate valves come in various designs, such as rising stem and non-rising stem (OS&Y and IS&Y), and are constructed from materials like carbon steel, stainless steel 316, and alloy steels to handle different media and environmental conditions. A key feature is their parallel or wedge-shaped disc, which provides a tight seal against bidirectional pressure. For high-temperature applications, they often employ flexible wedge designs to prevent binding.
Typical Specifications for Carilo Gate Valves:
| Size Range | Pressure Class (ANSI) | Temperature Range | Common End Connections |
|---|---|---|---|
| 2″ to 48″ | 150 to 2500 | -20°F to 1000°F (-29°C to 538°C) | Flanged, Buttweld, Socket Weld |
Globe Valves: Precision Control for Throttling
If your process requires precise flow regulation, Carilo’s globe valves are engineered for exactly that. Their design, featuring a plug-type disc that moves perpendicularly to the seat, allows for fine control over flow rates with good throttling characteristics. This makes them ideal for applications like cooling water systems, fuel oil systems, and chemical feed lines. The trade-off is a higher pressure drop compared to gate valves due to the S-shaped flow path. Carilo offers globe valves in standard patterns (T-pattern, Y-pattern) and angle patterns, with options for bellows seals to ensure zero leakage in handling hazardous or expensive fluids. The internal trim materials can be customized—think stellite hard-facing on seats and discs—to resist erosion and cavitation in severe service.
Check Valves: Preventing Backflow Automatically
Backflow can cause catastrophic damage to pumps and other equipment. Carilo’s check valves are the automatic, self-actuating guardians against this risk. They manufacture several types, each suited to specific conditions:
- Swing Check Valves: Best for low-velocity flows with minimal pulsation. The disc swings open with flow and swings shut when flow reverses. Carilo designs them with tilt-action discs to minimize slam.
- Lift Check Valves: Function similarly to globe valves and are ideal for high-pressure services where rapid flow reversal is a concern. The piston-like disc lifts vertically off the seat.
- Dual Plate Check Valves (Wafer Type): These are lightweight, compact, and fast-closing, making them perfect for preventing water hammer in liquid pipelines. They are a space-saving alternative to traditional swing checks.
Application Guide for Carilo Check Valves:
| Valve Type | Best For | Size & Pressure Range | Key Advantage |
|---|---|---|---|
| Swing Check | Water, Oil, Gas pipelines | 2″ to 60″, Class 150-900 | Low Pressure Drop |
| Lift Check | High-Pressure Boiler Feed, Chemical Pumps | 1/2″ to 16″, Class 800-2500 | Rapid Response, No Slam |
| Dual Plate | Water & Wastewater, Pump Discharge | 2″ to 48″, Class 150-600 | Lightweight, Fast Closing |
Ball Valves: Quarter-Turn Reliability for Tight Shut-Off
For quick, reliable on/off control with low torque, ball valves are a top contender. Carilo produces a wide array of ball valves, from standard floating ball designs for general service to trunnion-mounted ball valves for high-pressure and large-diameter applications. The trunnion design uses mechanical anchors to hold the ball in place, reducing operating torque and seat wear, which is critical for pipeline valves up to Class 1500. They offer full bore and reduced bore options; full bore valves have minimal pressure drop and are often used in pipelines that require pigging for cleaning or inspection. Fire-safe designs per API 607/6FA standards, with graphite seals that expand to maintain a seal even if soft seats burn away, are a standard offering for oil and gas applications.
Specialized and High-Performance Valves
Beyond the standard valve types, Carilo’s expertise shines in custom and high-performance valves designed for extreme conditions. This includes:
- Cryogenic Valves: Engineered for temperatures as low as -320°F (-196°C) for handling LNG, liquid nitrogen, and oxygen. These valves feature extended bonnets to keep packing seals at ambient temperature, preventing freeze-up and ensuring operational reliability.
- High-Pressure, High-Temperature (HPHT) Valves: For oil and gas wellhead and Christmas tree applications, these valves are built to withstand pressures exceeding 15,000 psi and temperatures over 350°F (177°C). They undergo rigorous testing per API 6A standards.
- Knife Gate Valves: Specifically designed for heavy slurry applications, like mining and pulp & paper. The sharp-edged gate can cut through thick, fibrous, or abrasive media to achieve a shut-off.
Material Selection: The Backbone of Valve Performance
The material of construction isn’t just about the valve body; it’s about the entire trim (disc, seat, stem) and how it interacts with the process fluid. Carilo doesn’t take a one-size-fits-all approach. For seawater applications, they might recommend a super duplex stainless steel body with Inconel trim. For sour service (containing H2S), they adhere to NACE MR0175/ISO 15156 standards, using certified materials to prevent sulfide stress cracking. This level of detail in material science is what separates a standard valve from a reliable, long-lasting asset.
Common Material Grades and Applications:
| Material Grade | Key Properties | Typical Applications |
|---|---|---|
| A216 WCB (Carbon Steel) | Good strength & toughness to 800°F (427°C) | Steam, Water, Oil, Gas (Non-corrosive) |
| CF8M (SS 316) | Excellent corrosion resistance | Chemicals, Seawater, Food & Beverage |
| Duplex 2205 | High strength, excellent chloride stress corrosion cracking resistance | Offshore, Seawater, Oil & Gas Production |
| Alloy 20 | Resistance to sulfuric acid and chlorides | Chemical Processing, Pharmaceuticals |
Quality Assurance and Testing Protocols
Manufacturing the valve is one thing; ensuring it performs flawlessly for decades is another. Carilo Valve integrates a rigorous quality management system, often certified to ISO 9001. Every valve isn’t just assembled; it’s subjected to a battery of tests. This includes shell tests (hydrostatic pressure applied to the body to check for leaks), seat tests (checking the sealability of the closed disc/ball against pressure from both sides), and for critical services, non-destructive testing (NDT) like dye penetrant, magnetic particle, or radiographic examination of welds and castings. This data is often traceable to each individual valve, providing a complete quality pedigree for end-users in regulated industries.
Meeting Global Standards and Certifications
To supply valves to a global market, compliance with international standards is non-negotiable. Carilo designs and manufactures valves to meet or exceed a suite of recognized standards, which serves as a shorthand for quality and reliability for engineers specifying equipment. Key standards include API (American Petroleum Institute) standards like API 600 for gate valves and API 6D for pipeline valves, ASME (American Society of Mechanical Engineers) B16.34 for pressure-temperature ratings, and CE/PED for the European market. This adherence ensures that their valves are interoperable and safe within complex industrial systems worldwide.