What types of ball valves does Carilovalves manufacture

Material Specifications and Construction Standards

Carilovalves manufactures ball valves using premium-grade raw materials that ensure long-term durability and reliable performance across demanding applications. The company’s quality control process begins with rigorous material verification, ensuring every component meets international standards before entering production.

The primary body materials include:

Carbon Steel (WCB, LCC, LC3) – Ideal for general industrial applications with operating temperatures ranging from -29°C to 425°C and pressure ratings up to ASME Class 2500
Stainless Steel (CF8, CF8M, CF3, CF3M, 304, 316, 316L) – Superior corrosion resistance for chemical processing, pharmaceuticals, and food-grade applications with temperatures from -196°C to 600°C
Alloy Steel (F91, F92, Inconel alloys) – Engineered for high-temperature power generation and refinery applications where standard materials cannot perform
Duplex and Super Duplex (2205, 2507, F51) – Balanced strength and corrosion resistance for offshore and marine environments
Special Alloys (Hastelloy, Monel, Titanium) – Available for highly corrosive media including chlorides, acids, and seawater applications

Each valve undergoes 100% pressure testing before shipment. The company maintains dimensional accuracy within ±0.05mm for critical seating surfaces, ensuring bubble-tight shutoff that exceeds API 598 requirements.

Seat Materials and Temperature Ranges

The seating system determines the valve’s leakage rate and thermal capabilities. Carilovalves offers multiple seat material options tailored to specific service conditions:

Seat Material	Temperature Range	Pressure Rating	Recommended Application
Virgin PTFE	-196°C to 200°C	Up to Class 600	General service, water, air, mild chemicals
Reinforced PTFE (RPTFE)	-196°C to 230°C	Up to Class 1500	Steam, hydrocarbon processing, higher cycle counts
PEEK	-50°C to 260°C	Up to Class 2500	High-temperature chemical and refinery service
Devlon/Polyimide	-40°C to 250°C	Up to Class 2500	Abrasive media, slurry applications
Metal-to-Metal	-196°C to 593°C	All pressure classes	High-temperature critical service, nuclear applications
Graphite	-196°C to 450°C	All pressure classes	Fire-safe applications, thermal cycling service

The company’s engineering team conducts finite element analysis on seating configurations to optimize stress distribution, particularly for severe service conditions involving thermal expansion, erosion, or frequent cycling.

Connection Methods and Installation Configurations

Carilovalves produces ball valves with various end connections to accommodate different installation requirements and industry preferences. The manufacturing capability spans multiple connection standards to serve global markets.

Flanged End Connections:

ASME B16.5 Class 150 through Class 2500 – Available in RF (Raised Face), RTJ (Ring Type Joint), and FF (Flat Face) configurations
EN 1092-1 PN16 through PN420 – European standard flanges with Type A, B, D, E, and F facing options
JIS B2220 – Japanese industrial standard flanges
DIN 2501 – German standard for process industry applications
Custom face-to-face dimensions available for valve replacement projects

Butt Weld Ends:

ASME B16.25 – Standard butt weld preparation for schedule 10S through XXH wall thickness
ISO 15463 – International standard for petroleum and natural gas industries
Available in socket weld configuration for smaller sizes (typically NPS 1/2 through NPS 2)

Threaded Connections:

NPT (National Pipe Thread) per ASME B1.20.1 – Standard for North American markets
BSPT (British Standard Pipe Thread) – Common in European and Asian applications
BSPP (British Standard Parallel Pipe) – For applications requiring leak-tight threaded joints

Tri-Clamp and hygienic Connections:

ISO 2852 / DIN 32676 – For sanitary process applications in food, beverage, and pharmaceutical industries
IDF and ISS standards – International dairy fitting specifications

Ball Design Variations

The ball is the core component that controls flow in ball valves. Carilovalves manufactures several ball designs, each engineered for specific operational requirements and performance characteristics.

Floating Ball Design:

The ball floats downstream against the seat during operation
Standard sizes range from NPS 1/4 through NPS 4 for Class 150-600 applications
Higher pressure classes available up to Class 1500 for smaller sizes
Simple, reliable design with lower cost for on-off service
Bubble-tight shutoff achievable with lower actuator torque requirements

Trunnion-Mounted Ball Design:

Ball is supported by upper and lower trunnion bearings for sizes NPS 2 and larger
Handles high-pressure applications (Class 150 through Class 2500)
Reduces operating torque, allowing smaller and more economical actuators
Recommended for NPS 6 and larger in all pressure classes
Provides stable operation in high-differential pressure conditions

Cavity Filler Ball Valves:

Full cavity filling design minimizes product entrapment in the ball cavity
Critical for sanitary services, polymer processing, and slurries
Eliminates cross-contamination between batches in chemical processing
Available in both floating and trunnion designs

V-Port Ball Valves (Characterized Ball):

Precision-shaped ball profiles for modulating service
Equal percentage characteristic for standard flow control applications
Linear characteristic available for specific process requirements
Typical rangeability of 100:1 or better depending on configuration
Suitable for flow regulation in HVAC, water treatment, and chemical dosing

Special Application Designs

Beyond standard configurations, Carilovalves develops specialized ball valve designs for challenging service conditions that require enhanced performance features.

Fire-Safe Ball Valves:

Tested and certified to API 607 and API 6FA standards
Secondary metal-to-metal seating ensures continued operation after fire exposure
Graphite-based stem and body seals maintain integrity during thermal events
Typical temperature rating: -29°C to 538°C depending on materials
Required by refinery, petrochemical, and offshore platform specifications

Cryogenic Ball Valves:

Extended bonnet design with live-loaded packing for LNG, liquid nitrogen, oxygen, and ethylene service
Temperature ratings from -196°C to -50°C depending on cryogenic fluid
Precision-machined stems with blowout-proof design
Special cleaning procedures for oxygen service (OTM/O2 certified)
Extended stem allows safe operation without cryogenic burns to personnel

Anti-Static and Grounding Devices:

Spring-loaded grounding devices connect ball to body for static dissipation
Essential for flammable gas, hydrocarbon, and dust-handling applications
Meets API 608 and ATEX/IECEx requirements for hazardous areas
Surface resistivity maintained below 10Ω for body and ball continuity

Dual Block-and-Bleed Configuration:

Two isolated seating chambers with individual bleed ports
Enables positive isolation verification during maintenance procedures
Standard in oil and gas production and pipeline applications
ANSI/API 591 compliant for fugitive emission service

Automation and Actuation Options

Carilovalves provides factory-mounted automation solutions and bare shaft valves for field actuation, offering flexibility to meet diverse project requirements and budget considerations.

Pneumatic Actuation:

Rack-and-pinion rotary actuators for quarter-turn operation
Spring-return (fail-safe) and double-acting configurations
Torque outputs ranging from 50 Nm to 13,000 Nm
Namur mounting pattern for direct solenoid valve attachment
High-cycle versions with bearing supports for demanding applications
ATEX-certified housings available for Zone 1 and Zone 2 hazardous locations

Electric Actuation:

Multi-turn and quarter-turn electric actuators
Torque outputs from 20 Nm to 3,000 Nm for quarter-turn service
Integral controls with local/remote selector and status indication
Bus communication options: Foundation Fieldbus, Profibus, Modbus, HART
IP68/NEMA 6P rated units for subsea and outdoor installations
Emergency handwheel operation for power failure scenarios

Hydraulic Actuation:

Compact hydraulic actuators for high-torque requirements
Operating pressures from 70 bar to 350 bar depending on model
Precise speed control for critical process operations
Fail-safe options with hydraulic accumulators
Typical for offshore subsea trees and high-pressure pipeline service

Industry-Specific Valve Configurations

Carilovalves engineers valve configurations to meet specific industry requirements, ensuring compliance with relevant standards and optimal performance in target applications.

Oil and Gas / Petrochemical Applications:

API 608 compliant design for general refinery and gas plant service
API 6D design for pipeline and gathering system installations
Full bore and reduced bore options matching pipeline schedules
Wedge-closure or flange-cover designs for pipeline pigs
Blowdown valve configurations for pressure relief and maintenance
Material combinations per NACE MR0175 / MR0103 for sour service

Power Generation and Boiler Feedwater:

High-pressure drop closure (HPHC) designs for turbine bypass applications
Cavitation-resistant seating for boiler feed pump recirculation
Thermal cycling capability validated per ASME standards
Chromium-molybdenum and stainless steel alloys for high-temperature steam
On-off and regulating capabilities for turbine isolation valves

Water and Wastewater Treatment:

Epoxy-coated carbon steel bodies for corrosion protection
Stainless steel internals for chlorinated water service
Full-port designs for minimal pressure drop in large-diameter applications
Wafer-style construction for cost-effective installation between flanges
Ductile iron options for municipal water distribution

Pharmaceutical and Biotechnology:

Electropolished internals with Ra ≤ 0.4 μm surface finish
Tri-Clamp and Aseptic flange connections per ISO 2852
Passivation and electropolishing services available
Documentation packages including material test reports, dimensional inspections, and surface analysis
3.1B material traceability per EN 10204

Food and Beverage Processing:

USDA-accepted materials for dairy, beverage, and edible oil service
Steam-qualified configurations for CIP (Clean-in-Place) systems
Third-party certifications from NSF, 3-A, and EHEDG available
Silicone and food-grade elastomers meeting FDA 21 CFR requirements
Easy-clean designs minimizing product holdup and bacterial growth points

Quality Assurance and Testing Capabilities

Carilovalves operates comprehensive testing facilities to validate valve performance and provide documentation required by demanding industrial specifications. The company’s quality management system is certified to ISO 9001:2015 with additional industry-specific approvals.

Test Type	Standard	Parameters Verified
Hydrostatic Shell Test	API 598 / API 6D	1.5x rated pressure for body integrity
Seat Leakage Test	API 598 / API 6D	Bubble-tight (zero leakage) at rated pressure
Low-Pressure Seat Test	API 598	0.5-0.7 bar air test for fugitive emissions
Fire-Safe Testing	API 607 / API 6FA	Seat integrity after 30-minute fire exposure
Cryogenic Testing	API 6DSS / BS 6364	Leakage verification at -196°C
Fugitive Emission Testing	API 622 / ISO 15848	Low-level emissions over temperature/pressure cycles
Material Verification	ASTM standards	Chemical composition and mechanical properties

Beyond standard production testing, Carilovalves offers additional services including positive material identification (PMI), liquid penetrant examination (LPE), magnetic particle inspection (