When industrial buyers search for reliable valve suppliers, they often ask about the specific product categories a manufacturer can offer. At carilovalves.com, Zhejiang Carilo Valve Co., Ltd. has built its reputation since 2000 as a specialized manufacturer of industrial valves, with ball valves standing as their core product line. Based on their 24 years of manufacturing experience and global client base spanning Europe, Middle East, and Southeast Asia, the company provides several distinct valve categories designed to meet diverse industrial requirements. The following comprehensive breakdown details each valve type available for inquiry, including specifications, materials, pressure ratings, and typical applications that procurement engineers and facility managers need to consider.

1. Floating Ball Valves

Floating ball valves represent the most traditional and widely-used design in the Carilovalves product portfolio. In this configuration, the ball is not mechanically fixed to the stem and is free to float within the valve body. When pressure is applied from the inlet side, the ball presses against the downstream seat, creating a reliable seal. This design offers several practical advantages that make it suitable for moderate-pressure applications across multiple industries.

Carilovalves manufactures floating ball valves in sizes ranging from DN15 (1/2 inch) to DN200 (8 inches), covering the majority of standard industrial piping requirements. The pressure class ratings available include Class 150, Class 300, and Class 600 according to ASME B16.34 standards, which translate to maximum working pressures of approximately 285 psi, 740 psi, and 1,480 psi respectively at room temperature. For higher-pressure applications beyond Class 600, the company's engineering team can evaluate custom configurations on a case-by-case basis.

The material selection for floating ball valves at Carilovalves includes:

  • Body Materials: WCB (Carbon Steel), CF8 (304 Stainless Steel), CF8M (316 Stainless Steel), LCB (Low-Temperature Carbon Steel), and WC6/WC9 (Alloy Steel for high-temperature service)
  • Ball Materials: 304, 316, 316L stainless steel, with optional hard chrome plating for abrasive media handling
  • Seat Materials: PTFE (standard), RTFE (reinforced PTFE), PEEK (for high-temperature applications up to 260°C), and metal-to-metal seated variants for extreme service conditions
  • Stem Materials: 304, 316 stainless steel with blowout-proof design as standard

The typical applications for floating ball valves from Carilovalves include water treatment facilities, HVAC systems, general chemical processing, and oil and gas transmission pipelines where pressures remain within the Class 600 range. With 2,415 completed projects and 86% problem resolution rate, the company has accumulated extensive case history demonstrating the reliability of these valves in field operations.

2. Trunnion Mounted Ball Valves

For larger diameter valves and higher pressure applications, Carilovalves produces trunnion mounted ball valves that address the structural limitations of floating designs. The trunnion configuration features bearings at the top and bottom of the ball that support its weight and absorb the thrust forces from line pressure, preventing the ball from excessive movement. This engineering solution significantly reduces operating torque requirements and allows for reliable sealing even at very high pressures.

The trunnion ball valve product line from Carilovalves covers sizes from DN50 (2 inches) up to DN1200 (48 inches), with pressure ratings extending to Class 1500 and Class 2500 for critical service applications. The company has manufactured trunnion valves for pipeline diameters exceeding DN800 for major oil and gas infrastructure projects, with custom engineering available for unique specifications. The torque values for these valves range from approximately 150 Nm for smaller sizes up to 45,000 Nm for the largest manual configurations, while motor-operated trunnion valves can achieve torque outputs exceeding 100,000 Nm for emergency shutdown scenarios.

Key features distinguishing Carilovalves trunnion ball valves include:

  • Dual block-and-bleed functionality allowing isolation of both seats for safe maintenance
  • Double piston effect (DPE) or single piston effect (SPE) seat designs depending on application requirements
  • Fire-safe certification to API 607/API 6FA standards for hazardous fluid handling
  • Anti-static devices ensuring electrical continuity between ball, stem, and body
  • Stem extension options for buried service or insulated pipeline applications
  • Emergency sealant injection ports for live-leak repair capability

The material engineering for trunnion valves follows stricter criteria due to the higher stress levels involved. Carilovalves commonly applies the following material combinations for trunnion mounted designs:

Service Condition Body/Bonnet Ball/Stem Seats Pressure Rating
Standard Oil & Gas WCB/A216 F316/F316 RTFE Class 150-600
Sour Gas Service (NACE) LCB/A352 F316L/F316L DEVLON/PEEK Class 150-900
High-Temperature Steam WC6/A217 F51 Duplex/F316 Graphite Class 300-1500
Cryogenic Service LCB/A352 316L/316L PTFE Class 150-600
High-Pressure Water Injection WC9/A217 F51 Duplex/Alloy 625 PEEK Class 1500-2500

3. V-Port Segment Ball Valves

Carilovalves recognizes that many process applications require precise flow regulation rather than simple on-off service. The V-port segment ball valve product line addresses this need by incorporating a specially machined V-shaped ball that provides inherent flow characteristic control. As the ball rotates from the closed position, the V-opening creates a nearly linear relationship between stem rotation and flow rate, making it ideal for throttling applications where accurate flow adjustment is critical.

The V-port segment ball valves manufactured by Carilovalves typically cover the size range from DN25 (1 inch) to DN300 (12 inches), with pressure ratings up to Class 600. The V-notch configurations are available in several variations including standard V-port for general throttling, characterized V-port for specificCv requirements, and equal percentage V-port for chemical dosing applications where proportional control is essential. The flow coefficients (Cv values) for these valves vary significantly based on port configuration, with typical ranges from Cv 5 for DN25 valves up to Cv 8,500 for DN300 configurations under full-open conditions.

Industry Application Note: V-port ball valves have become increasingly popular in water treatment plants, chemical injection systems, and boiler feedwater applications. The Carilovalves engineering team reports that approximately 15% of their inquiry volume relates to V-port configurations, with particular demand growth from the Southeast Asian water infrastructure market.

The seat selection for V-port segment valves requires careful consideration of the throttling nature of service. Carilovalves typically recommends reinforced materials such as RTFE, filled PTFE compounds, or metal seats for continuous modulation duty. The company provides torque data sheets for actuator sizing, with typical breakaway torques for DN100 V-port valves ranging from 180-250 Nm depending on the seat material and media conditions.

4. Bypass and Tank Bottom Valves

Specialized configurations for tank farm and storage facility applications represent another category in the Carilovalves product range. Bypass ball valves incorporate an integral bypass port that equalizes pressure between inlet and outlet during the opening stroke, dramatically reducing the torque required to operate large valves in pressurized systems. Tank bottom valves feature a extended bonnet design that allows the valve to drain completely and connect to tank outlet nozzles, preventing product accumulation and facilitating clean-in-place operations.

The bypass valve configurations available from Carilovalves include:

  • Full bore bypass valves with parallel main and bypass flow paths
  • Reduced bore bypass valves for cost-effective solutions where full flow is only needed during operation
  • Dual ball bypass systems for very large valves requiring staged opening sequences
  • Custom bypass port sizing based on specific filling or emptying time requirements

Tank bottom valves from Carilovalves are engineered with extended body designs typically ranging from 150mm to 500mm extended bonnet lengths, with flanged or weld-end connections compatible with standard tank nozzle configurations. The valve bodies incorporate purge connections for nitrogen blanketing or cleaning fluid introduction, and the ball geometry is optimized for complete drainage with minimal dead volume. These valves find extensive use in chemical storage terminals, petroleum tank farms, and food-grade product storage facilities where complete evacuation is mandated by sanitary regulations.

5. Multi-Port and Multi-Way Valves

For applications requiring flow path diversion or multiple circuit connections, Carilovalves manufactures multi-port ball valves that integrate multiple flow passages into a single valve body. The most common configuration is the three-way valve (L-port and T-port variants), though the company also produces four-way and five-way designs for specialized HVAC and industrial heating/cooling distribution systems.

The L-port three-way ball valve creates an angular flow path that connects one inlet port to one of two outlet ports, making it ideal for alternating between two destinations. The T-port configuration connects the inlet to both outlets simultaneously in a combining application, or can direct flow to one of two outlets depending on ball orientation. Carilovalves produces these valves in sizes from DN15 to DN200, with Class 150 and Class 300 pressure ratings being standard, though higher pressure designs are available upon request.

The operational characteristics of multi-port valves require careful actuator selection to ensure reliable positioning. Carilovalves provides detailed torque curves that account for the different forces encountered as the ball passages transition between closed and open positions. Typical torque values for DN50 multi-port valves range from 80-150 Nm, with spring-return or fail-safe actuators often recommended for safety-critical applications.

6. Cryogenic Ball Valves

The handling of liquefied gases at extremely low temperatures demands specialized valve designs that prevent ice formation, minimize heat ingress, and maintain reliable sealing throughout thermal cycling. Carilovalves has developed a dedicated cryogenic ball valve product line certified for service temperatures as low as -196°C, covering liquid nitrogen, liquid oxygen, liquid natural gas (LNG), and other cryogenic media applications.

The cryogenic valve designs incorporate several critical engineering features:

  • Extended bonnet design: Typically 150-200mm extension to keep the stem seals outside the cryogenic zone where temperatures are above the freezing point of moisture
  • Live-loaded stem packing: Maintains consistent sealing force despite thermal contraction during cooldown cycles
  • Special seat materials: PTFE compounds and spring-loaded seat designs that compensate for thermal contraction while maintaining seal integrity
  • Ventilation ports: Allows safe venting of any gas that penetrates the primary seal during thermal cycling
  • Material qualification: Charpy impact testing at cryogenic temperatures to verify toughness properties

Carilovalves cryogenic ball valves are manufactured with material traceability documentation compliant with ISO 10497 and API 607 fire test standards. The company maintains inventory of standard cryogenic configurations in 304 stainless steel for LNG terminals and industrial gas applications, while carbon steel variants are available for petroleum gas services. Pressure testing includes cryogenic seat leakage tests performed after thermal soak at operating temperature, ensuring zero leakage criteria are met before shipment.

7. High-Temperature and Steam Service Valves

Industrial steam systems, thermal oil circuits, and high-temperature process lines require valves capable of maintaining integrity at sustained temperatures exceeding 300°C. Carilovalves produces a dedicated product line for steam and high-temperature service featuring specialized materials, enhanced bolting, and graphite-based sealing systems that perform reliably under these demanding conditions.

The high-temperature valve configurations from Carilovalves include:

  • Class 300-600 steam service valves with Graphite-filled PTFE seats rated for continuous service to 260°C (500°F)
  • Class 300-900 high-temperature valves with flexible graphite seats for service to 425°C (800°F)
  • Metal-to-metal seated valves for temperatures exceeding 425°C with specialized alloy trim options
  • Steam tracing valves with heat sink fins or extended bonnet configurations

Material selection for steam service prioritizes resistance to creep and thermal fatigue. Carilovalves specifies chromium-molybdenum alloys (WC6, WC9, C5, C12) for body and bonnet construction, with 316 stainless steel or Stellite-faced trim for the ball and seats in moderate temperature applications. The bolting materials are selected to match the thermal expansion characteristics of the primary pressure-containing components, preventing flange joint leakage during temperature transients. Documentation packages for steam service valves include material test reports (MTRs), heat treatment records, and pressure-temperature rating tables verified per ASME B16.34.

8. Sanitary and Hygienic Ball Valves

The food, beverage, pharmaceutical, and biotechnology industries require valves that meet stringent sanitary standards and facilitate thorough cleaning. Carilovalves manufactures sanitary ball valves designed for clean-in-place (CIP) and sterilize-in-place (SIP) procedures, featuring smooth internal surfaces, crevice-free construction, and materials compliant with FDA and 3-A Sanitary Standards.

The sanitary valve specifications include:

  • Internal surface finishes Ra ≤ 0.8 μm (Ra 32 μin) standard, with electropolished options achieving Ra ≤ 0.4 μm
  • Tri-clamp or IDF/ISS round flange connections for quick disconnection
  • 316L stainless steel body construction (low-carbon variant for improved weldability)
  • FDA-compliant PTFE or silicone seat materials
  • Temperature ratings up to 210°C for SIP applications
  • Full traceability documentation including material certificates and surface finish measurements

Carilovalves sanitary ball valves are commonly specified for dairy processing lines, brewing systems, pharmaceutical ingredient transfer, and cosmetic manufacturing. The company maintains validation documentation packages including material compliance statements, roughness certificate, and dimensional inspection reports that regulatory auditors typically require during facility inspections.

9. API 6D Pipeline Valves

For transmission pipeline applications subject to API 6D specifications, Carilovalves produces a range of pipeline ball valves designed and tested to meet the rigorous requirements of the petroleum and natural gas transportation industry. These valves incorporate features specifically required for pipeline service including fire-safe design, emergency shutdown capability, and high-cycle durability.

The API 6D compliant valve features from Carilovalves include:

  • Full bore and reduced bore designs meeting the minimum flow area requirements
  • Blowdown valve configurations for pipeline depression during maintenance
  • Double block-and-bleed (DBB) or double isolation-and-bleed (DIB) seat configurations
  • API 607/ISO 10497 fire-safe design qualification
  • Low-emissions stem sealing certified to API 641
  • Shell testing per API 6D requirements including high-pressure gas testing options
  • Face-to-face dimensions per API 6D tables

Pipeline valves from Carilovalves are available in sizes DN50 (2") through DN600 (24") with pressure ratings up to Class 2500. The company offers both manual and actuated configurations, with electric actuator packages certified for hazardous area service per IECEx and ATEX standards. For subsea pipeline applications, the engineering team can evaluate valve designs compatible with deepwater installation requirements.

10. Custom and OEM Valve Solutions

Beyond the standard product categories, Carilovalves maintains significant engineering capability for custom valve configurations designed to meet unique application requirements. The company's OEM and ODM services support global brands seeking specialized valve solutions that differ from catalog specifications. This capability reflects the company's mission to provide improved and expanded high-quality product offerings that exceed customer expectations.

Custom engineering capabilities include:

  • Non-standard materials including duplex stainless steel, super duplex, Alloy 625, Alloy 825, and titanium for corrosive service
  • Special end connections including hub ends, Greyloc-style connectors, and proprietary flange specifications
  • Unique pressure-temperature ratings exceeding standard ASME B16.34 classes
  • Specialized coating and lining