API 6D Certified · ISO 5208 Rate A
Forged Soft-Seated
Floating Ball Valve
CARILO — Industrial Valve Solutions
Premium-grade forged soft-seated floating ball valves engineered for superior tight shutoff and dependable long-term performance. API 6D certified, pressure classes from 150LB to 2500LB.
150–2500
LB Pressure Range
API 6D
Certification
ISO 5208
Rate A Leakage
-29–200°C
Temperature Range
Product Overview
Engineered for Superior Tight Shutoff Performance
CARILO forged soft-seated floating ball valves combine robust forged construction with precision sealing technology to deliver reliable bubble-tight shutoff across the full pressure range.
API 6D Certified Manufacturing
Side-entry floating ball valve fabricated strictly per API 6D specifications, ensuring consistent quality across every unit produced.
ISO 5208 Rate A Leakage Class
Achieves bubble-tight sealing meeting ISO 5208 Rate A requirements. Upstream pressure pushes the floating ball firmly onto the downstream seat for reliable leak-free performance.
Forged Split-Body Construction
Robust forged bolted two-piece or three-piece split body design. Compact and streamlined structure with seats directly assembled inside the valve body.
Features & Benefits
Built for Demanding Industrial Applications
Every valve is engineered with proven design features that ensure safety, reliability, and long service life in the harshest environments.
Anti-Static Device
Built-in static grounding eliminates electrostatic discharge risk in flammable fluid service.
Anti-Blowout Stem
Stem is mechanically retained from inside the valve body, preventing stem ejection under pressure.
Bi-Directional Tight Shut-Off
Sealing performance is maintained in both flow directions, providing maximum flexibility in piping layouts.
Low Fugitive Emission Packing
Optional low-emission stem packing meets ISO 15848-2 CLASS A for environmentally sensitive applications.
O-Ring / Lip Seals + Graphite
Multiple seal configurations — O-ring, lip seals, and graphite — available to match specific media and temperature requirements.
Low Pressure Drop
Full-bore design minimizes flow restriction, reducing system energy losses and pumping costs.
Compact & Lightweight
Forged construction reduces wall thickness without compromising strength, delivering a lighter valve that's easier to install and support.
Technical Specifications
Complete Product Specifications
| Parameter | Specification |
|---|---|
| Size Range & Pressure Class |
1/2" – 8" 150LB – 300LB 1/2" – 4" 600LB 1/2" – 2" 900LB – 1500LB 1/2" – 1.5" 2500LB |
| Port Bore | Full Bore / Reduced Bore |
| End Connections |
Flanged (RF, RTJ) — per B16.5 & B16.47 Socket Welded — per B16.11 Butt Welded — per B16.25 |
| Valve Design | Based on API 6D standards |
| Temperature Range | -29°C to 200°C (-20°F to 392°F) |
| Face-to-Face | Per API 6D standard |
| Body Design | Bolted 2-Piece / Bolted 3-Piece (Forged) |
| Operator Options | Lever Handle / Gear Operator / Bare Shaft |
| Testing & Certifications | API 6D / ISO 5208 / API 598 · API 607 Fire Safe · ISO 15848-2 CLASS A · PED 2014/68/UE |
End Connection Details
- Flanged RF (Raised Face) per ASME B16.5 & B16.47
- Flanged RTJ (Ring Type Joint) per ASME B16.5
- Socket Welded per ASME B16.11
- Butt Welded per ASME B16.25
Material Options
- Carbon Steel (WCB, LCC, LC3)
- Stainless Steel (F304, F316, F316L)
- Duplex & Super Duplex (F51, F53, F55)
- Alloy materials available per project specification
Port Bore Options
Choose the Right Bore for Your Application
CARILO valves are available in full bore and reduced bore configurations to match your flow requirements and budget.
Full Bore
Maximum flow capacity, minimal pressure loss
- Ball port diameter equals pipe ID — zero flow restriction
- Ideal for pigging operations in pipeline applications
- Lowest pressure drop across the valve
- Recommended for slurries, viscous media, and gas service
Reduced Bore
Cost-effective solution for standard on-off service
- Ball port is one or two sizes smaller than pipe diameter
- Lower material cost and reduced valve weight
- Suitable for most general on-off applications
- Industry-standard choice for water, air, and oil service
Applications
Covering the Full Pressure Spectrum
From general utility lines to ultra-high-pressure oilfield service, CARILO valves are specified across demanding industrial sectors worldwide.
General-Purpose Service
1/2" – 8" · Water Treatment, HVAC, Refinery Utility
Low-to-medium pressure applications including water treatment plants, refinery utility lines, HVAC systems, and light-duty oil and gas gathering lines.
Medium-to-High Pressure Process
1/2" – 4" · Refinery, Petrochemical, Process Water
Medium-to-high pressure process applications in refineries and petrochemical plants handling hydrocarbon streams, process water, and moderately corrosive fluid lines.
High-Pressure Demanding Service
1/2" – 2" · Oil & Gas Wellhead, Power Plant
High-pressure applications including oil and gas wellhead control lines, high-pressure injection systems, and power plant boiler feedwater piping.
Ultra-High-Pressure Critical
1/2" – 1.5" · High-Pressure Oilfield, Severe Service
Ultra-high-pressure critical applications in high-pressure oilfield well service, severe-service refinery and petrochemical lines, and high-pressure hydraulic systems.
Certifications & Compliance
Meeting Global Industry Standards
Every CARILO valve undergoes rigorous testing and is certified to meet or exceed international industry standards for safety and performance.
API 6D
Pipeline Valves — Manufacturing Design & Testing
ISO 5208
Rate A — Bubble-Tight Shutoff Leakage Class
API 598
Inspection & Testing of Valves
API 607
Fire Safe Design & Testing
ISO 15848-2
Fugitive Emission — CLASS A Certified
PED 2014/68/UE
Pressure Equipment Directive — EU Market
ISO 5208
Seat & Body Shell Pressure Testing
B16.5 / B16.47
Flange Dimensions — ASME Standard
All certifications available upon request. Test reports provided with each order.
Quality Assurance
Precision-Manufactured, Rigorously Tested
Every CARILO valve passes through multi-stage quality control before leaving the factory, ensuring consistent performance you can rely on.
Material Traceability
Raw materials are traced from supplier certificate through forging, machining, and assembly. Mill test reports (MTRs) accompany every heat of steel used in production.
Dimensional Inspection
Every valve is measured against engineering drawings at each manufacturing stage. Critical dimensions are verified using calibrated precision instruments.
Forging Quality Control
Forgings are inspected for grain flow, surface quality, and mechanical properties. Each forging batch undergoes hardness testing and macro-etch examination.
Seat Seal Testing
Each valve undergoes seat seal testing with water or air at 1.1× rated pressure. Leakage must meet or exceed ISO 5208 Rate A requirements.
Hydrostatic Shell Test
Body shells are pressure-tested at 1.5× rated pressure to verify structural integrity. No visible leakage or deformation is permitted.
Functional Cycle Test
Every valve is cycled open and closed to verify smooth operation. Torque measurements are recorded to confirm the stem-bonnet assembly performs within specifications.
Testing & Inspection
Every Valve Passes Before It Ships
CARILO valves are subjected to a comprehensive testing protocol that validates performance under real-world operating conditions.
01
Pressure Testing
Shell hydrostatic test at 1.5× rated pressure and seat leak test at 1.1× rated pressure per API 598. Water or nitrogen used as test medium.
02
Fire Safe Testing
Valves are fire tested per API 607 to verify they maintain structural integrity and prevent leakage of flammable media when exposed to fire conditions.
03
Fugitive Emission Testing
Stem fugitive emission test per ISO 15848-2 at elevated temperature and pressure cycling. Optional CLASS A certification available for low-emission applications.
04
Torque & Operation Test
Functional testing of open/close cycles with torque measurement. Tests verify smooth quarter-turn operation and confirm stem-bonnet joint integrity.
05
Material & Hardness Test
Brinell and Rockwell hardness testing on forgings. Chemical composition verified by spectrometer. Impact testing (Charpy V-notch) at operating temperatures.
06
Visual & Dimensional Inspection
Final inspection includes surface condition review, dimensional verification against drawings, flange face roughness measurement, and coating thickness check.
Manufacturing Process
From Forging to Finished Valve — In-House Control
CARILO controls the entire production chain, from raw material procurement through forging, machining, assembly, and testing — all under one roof.
Step 01
Forging
Steel is heated and precision-forged into valve body, bonnet, and end connector shapes using closed-die forging dies for consistent grain structure and strength.
Step 02
Machining
CNC lathes, milling machines, and drilling centers machine forged blanks to exact tolerances. Ball seats are precision-ground for flatness and surface finish.
Step 03
Assembly
Ball, seats, stem, and body are assembled with calibrated torque settings. Stem packing and bonnet gaskets are installed. The valve is closed and tagged with serial number.
Step 04
Testing & Painting
Full test suite including shell test, seat test, and cycle test. Surface treatment and painting applied. Final inspection and MTR package compilation before shipping.
Pressure Ratings Guide
Select the Right Pressure Class
Match the valve pressure class to your system design conditions — working pressure, temperature, and fluid type all influence the correct selection.
Class 150 / 300
Size: 1/2" – 8"
- Water treatment plants
- HVAC systems
- Refinery utility lines
- Light-duty oil & gas gathering
Class 600
Size: 1/2" – 4"
- Petrochemical process lines
- Refinery hydrocarbon streams
- Process water systems
- Moderately corrosive media
Class 900 / 1500
Size: 1/2" – 2"
- Oil & gas wellhead control
- High-pressure injection
- Power plant boiler feedwater
- High-pressure hydraulic lines
Class 2500
Size: 1/2" – 1.5"
- Ultra-high-pressure oilfield
- Severe-service refinery lines
- High-pressure hydraulic systems
- Critical well service operations
Custom Engineering
Tailored Solutions for Complex Requirements
Beyond standard configurations, CARILO offers extensive customization to meet the exact demands of your project specifications and operating environment.
Special Materials
Alloy 825, Alloy 625, Duplex stainless, Super Duplex, and other corrosion-resistant alloys available for sour service and seawater applications.
Actuator Mounting
ISO 5211 compliant top-works pattern for direct actuator mounting. Pneumatic, electric, and hydraulic actuators available as part of assembled and tested packages.
Special Sealing Materials
Graphite-filled seats, PTFE seals, Viton and AFLAS elastomers for high-temperature and chemically aggressive media beyond standard soft seat capabilities.
NACE MR0175 / ISO 15156
Valves qualified for H₂S-containing service per NACE MR0175 and ISO 15156 for use in oil and gas production and processing facilities.
Extended Bonnets & Special Facings
Extended bonnets forCryogenic service, bellows sealed stems, and special flange facings (SW, BW, RTJ) to match any piping configuration.
Why CARILO
Your Trusted Valve Manufacturing Partner
CARILO combines manufacturing excellence with competitive pricing to deliver superior value without compromising on quality or delivery reliability.
Competitive Pricing
As a direct manufacturer, CARILO offers competitive pricing without the markups of trading intermediaries — premium valves at the right price point for your project.
Fast Delivery
Short production lead times with ex-stock options for common configurations. Express manufacturing for urgent project requirements with clear delivery commitments.
Full Customization
Engineering team works directly with your project specs to configure the right valve — materials, pressure class, connections, and certifications matched to your exact requirements.
Proven Reliability
API 6D certified manufacturing, ISO 5208 Rate A sealing, and comprehensive testing ensure every valve performs as specified throughout its service life.
Global Export Ready
Export packaging, documentation (MTRs, DOs, COs), and logistics managed end-to-end. Full compliance with international export and import regulations.
Technical Support
Responsive engineering support for valve selection, sizing, and specification review. Datasheets, CAD models, and technical documentation available on request.
Technical Resources
Documentation & Engineering Support
Access technical documentation to support your valve selection and project engineering process.
PDF
CARILO VALVE CERTIFICATIONS
Official fire-safe, ISO, and API certification documents validating the international quality, safety, and compliance standards of CARILO valve products.
Download PDF
PDF
CARILO VALVE QUALITY MANAGEMENT
Comprehensive manual detailing our strict quality assurance practices, testing procedures, and management systems to guarantee flawless production.
Download PDF
PDF
CARILO VALVE BALL VALVE CATALOGUE
Complete technical product catalogue containing detailed dimensions, material specifications, pressure-temperature ratings, and ordering codes.
Download PDF
Ready to Specify CARILO Valves?
Contact our engineering team for technical support, pricing, or to request samples. We respond to all inquiries within one business day.
info@carilovalve.com
+86-577-57766880 / +86-577-57766889
linkedin.com/company/carilo-valve
Frequently Asked Questions
Common Questions Answered
Find quick answers to frequently asked questions about CARILO forged soft-seated floating ball valves. Contact us for detailed technical consultation.
CARILO forged soft-seated floating ball valves are available in Class 150, 300, 600, 900, 1500, and 2500 (150LB–2500LB). Size ranges vary by pressure class — from 1/2"–8" for 150–300LB, down to 1/2"–1.5" for 2500LB. This covers general service up to ultra-high-pressure oilfield applications.
Standard body materials include Carbon Steel (WCB, LCC, LC3), Stainless Steel (F304, F316, F316L), and Duplex/Super Duplex (F51, F53, F55). For sour service and corrosive environments, CARILO also offers Alloy 825, Alloy 625, and other corrosion-resistant alloys per project specifications.
CARILO valves are certified to API 6D (design and manufacturing), API 598 (inspection and testing), and API 607 (fire safe design). They also meet ISO 5208 Rate A (bubble-tight sealing), ISO 15848-2 CLASS A (fugitive emissions), and PED 2014/68/UE for the EU market. Full test reports and material traceability documents are provided with every order.
Three end connection types are standard: Flanged RF (Raised Face) and RTJ (Ring Type Joint) per ASME B16.5 and B16.47; Socket Welded per ASME B16.11; and Butt Welded per ASME B16.25. Custom flange facings and connection types are available for special project requirements.
The standard temperature range is -29°C to 200°C (-20°F to 392°F). Extended temperature variants are available using alternative seat materials (graphite, PTFE, or specialized alloys) to match your process temperature requirements beyond the standard soft-seat range.
Yes. CARILO forged soft-seated valves are specifically engineered with robust forged construction, anti-static devices, and anti-blowout stems for offshore and harsh working conditions. Material upgrades (stainless steel, duplex, super duplex, or alloys) and special coatings provide additional protection in corrosive and abrasive media services.
Yes. CARILO valves feature ISO 5211-compliant top-works patterns for direct mounting of pneumatic, electric, or hydraulic actuators. Automated valve packages — including limit switches, positioners, and solenoid valves — are available as fully assembled and tested units.
Standard configurations typically ship within 4–8 weeks depending on size, pressure class, and material. Express manufacturing is available for urgent project requirements. Contact your CARILO sales engineer for a confirmed delivery schedule based on your order specifications.
