CARTER Butterfly Valves
Carter Valve manufactures industrial butterfly valves for isolation and control in water, HVAC, oil & gas, chemical processing, power, and general industrial piping. We supply standard resilient-seated designs as well as engineered platforms for high-temperature, high-cycle, and tight-shutoff duties—supported by clear documentation, material traceability options, and application review based on your service conditions.
Carter Valve is an industrial butterfly valve manufacturer that offers: General Service Butterfly Valves, High-Performance Butterfly Valves, Triple Offset Butterfly Valves, Metal-to-Metal Seated Butterfly Valves, and isolation-focused designs for demanding shutoff requirements (selection depends on media, temperature, pressure class, cycling frequency, and leakage acceptance criteria).
What we help you achieve
Reliable shutoff with the right seat/sealing concept for your media and temperature
Stable operating torque to match your actuator and control strategy
Longer service life by avoiding common misapplications (wrong seat material, wrong body/trim, wrong end connection, poor installation)
Procurement clarity with a selection checklist and documentation package aligned to project needs
A butterfly valve is a quarter-turn rotary valve that uses a circular disc to start, throttle, or stop flow. Compared with many multi-turn valves, butterfly valves are usually lighter, more compact, and faster to operate, which is why they’re common in mid-to-large line sizes.
Core parts (quick glossary)
Body: wafer / lug / flanged—connects the valve to the pipeline
Disc: rotates to control flow
Stem/Shaft: transfers torque from handle/gear/actuator to disc
Seat / sealing system: resilient seat or metal sealing surfaces (depends on duty)
Bearing & packing: support the stem and manage external leakage
Betätigung: lever, gear operator, pneumatic, electric, hydraulic (based on torque + duty cycle + fail-safe needs)
Butterfly valves operate by rotating the disc 0–90°:
0° (closed): disc blocks the flow path; sealing system provides shutoff
90° (open): disc aligns with flow; minimal pressure drop for many designs
In-between: disc partially obstructs the flow for throttling (best practice depends on valve type and cavitation/erosion risk)
Why quarter-turn matters
Fast operation for isolation
Simple actuation and automation
Predictable control response (when sized and selected correctly)
Butterfly valves are used for both on/off isolation und modulating control, especially where space, weight, and cycle time matter.
isolation, pump stations, distribution networks
chilled/hot water loops, condenser water
where high-performance or metal-seated solutions are required (application-driven)
isolation duties where torque, fire-safe requirements, and sealing concept are properly specified
The most common category is the general service, resilient-seated butterfly valve, typically chosen for water, HVAC, and other moderate conditions where compact size and cost-effective isolation matter. In these applications, the main selection logic is usually seat compatibility, pressure class, and ensuring the disc/seat arrangement suits the flow direction and installation details. When applied within its limits, this type is straightforward to automate and maintain.
For more demanding isolation and cycling requirements, many projects step up to Hochleistungs-Absperrklappen, which use more robust sealing strategies and offset geometries to improve how the valve seals under differential pressure and repeated operation. This family is often selected when temperatures, shutoff expectations, or cycling frequency are higher than what general service designs handle comfortably—especially when the valve must remain stable over time rather than only passing a shutdown test on day one.
When elastomer seats are not suitable—such as higher temperatures, more severe cycling, or cases where metal sealing is preferred—projects may use metal-seated solutions, einschließlich triple offset butterfly valves. These designs are commonly specified for tougher isolation duties, but they also demand more disciplined specification: surface requirements, torque planning, and installation alignment can strongly influence real-world sealing and longevity.
Carter’s featured direction—the six-eccentric butterfly valve—sits in this “engineered isolation” space, intended for projects that want a butterfly-format valve but need a higher level of sealing stability and operational robustness than standard general service designs. In practice, it is usually evaluated when shutoff performance and cycling reliability are priorities, and when the selection must account for the full duty profile (pressure at shutoff, temperature range, media, and actuation strategy) rather than only line size and connection type.
General Service butterfly valves are designed for everyday isolation duties—often with a resilient seat—where temperatures and pressure classes are moderate and the media is clean or mildly challenging.
High-Performance butterfly valves are designed to handle higher temperature/pressure ranges, tougher cycling, and more demanding shutoff expectations by using an offset geometry and more robust sealing systems. In many real projects, high-performance designs reduce risk when you need repeatable shutoff under differential pressure or when temperature swings make standard resilient seats less stable.
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