JRVAL
Aug 20 202601
Concentric
A compact resilient-seated design for common water, HVAC and general industrial services.
Explore concentric valves →Butterfly Valve Manufacturing
Butterfly Valve Manufacturer, Engineered from Casting to Testing.
Selecting a butterfly valve is more than choosing a size and connection. Material, valve design, seat, manufacturing process, testing and applicable standards all influence final performance.
ISO CE BV Cert. Casting and butterfly valve manufacturing experience
3
Casting routes
Silica Sol
V-Process / Shell Molding
20+
Years
Manufacturing
Integrated production
MTC
Traceability
EN 10204 3.1
Project documentation
QC
Verification
Testing
Material / pressure / dimensional
Engineering Guide
Start with the application, not the product number.
The right butterfly valve depends on service conditions, pressure, temperature, media, size, shut-off requirements, connection type and actuation.
02
Double Offset
Reduced seat contact and operating torque for demanding industrial, water and process applications.
Explore double-offset valves →03
Triple Offset
Metal-seated geometry designed for high-temperature, high-pressure and critical shut-off applications.
Explore triple-offset valves →Connection Selection
Wafer, Lug or Flanged?
Connection type should be selected according to piping arrangement, maintenance requirements, pressure class and installation conditions.
Application Engineering
The same valve body can require very different engineering.
Media, temperature, corrosion, abrasion and certification requirements change the recommended valve configuration.
Material Selection
Material should follow the service, not the catalog.
Body, disc, stem and seat materials should be evaluated against media, temperature, pressure, corrosion, abrasion and project requirements.
Explore Material GuideCF8 / 304 Austenitic stainless steel for general corrosion-resistant service.
CF8M / 316 Common choice for chloride-containing and more demanding corrosion environments.
Duplex Higher strength and corrosion resistance for selected demanding applications.
WCB Carbon steel option for many industrial and process services.
Seat Materials EPDM, NBR, FKM, PTFE, UHMWPE and other compounds should be matched to the actual medium and temperature.
Standards & Manufacturing
One valve can reference several standards.
Product design, face-to-face dimensions, flange interface, actuator mounting and pressure testing may be governed by different standards. They should be evaluated together against the project specification.
Core Butterfly Valve Standards
The following references are commonly encountered in international butterfly valve projects. The governing edition and project specification should always be verified.
| Standard | Main Function | Butterfly Valve Application |
|---|---|---|
| API 609 | Butterfly valve design, materials, ratings, dimensions and testing. | Core butterfly valve reference for applicable industrial designs. |
| ASME B16.34 | Pressure-temperature ratings, materials, dimensions and marking. | Applicable metal valve reference. |
| ISO 5752 | Face-to-face and centre-to-face dimensions. | Valve dimensional interchangeability. |
| ISO 5211 | Part-turn actuator attachment. | Top mounting / actuator interface. |
| ISO 5208 | Pressure testing of metallic valves. | Shell and closure testing. |
| EN 593 | Metallic butterfly valves. | European butterfly valve design reference. |
| EN 12266-1 | Pressure tests and acceptance criteria. | European valve testing reference. |
| AWWA C504 | Rubber-seated butterfly valves. | Water and wastewater applications. |
| MSS SP-67 | Butterfly valve practice. | General-purpose butterfly valve applications. |
| MSS SP-68 | Offset butterfly valves for higher-pressure applications. | Applicable eccentric designs. |
Standards are complementary
A butterfly valve may use one standard for product design, another for face-to-face dimensions, another for the flange interface, another for actuator mounting and another for pressure testing.
This is why a valve should not be specified by one standard alone. Final requirements should be checked against valve type, material, size, pressure class, connection, actuator and project specification.
Open the full standards matrix →From Standard to Product
Once the design standard and service requirements are known, the next step is choosing the appropriate valve family.
GENERAL INDUSTRIAL
Concentric
Water, HVAC and general industrial service.
HIGH PERFORMANCE
Double Offset
Lower operating torque and reduced seat wear.
CRITICAL SERVICE
Triple Offset
Metal-seated service for demanding temperature and shut-off requirements.
Manufacturing Technology
Three casting routes. One engineering decision.
The best casting process depends on valve size, material, geometry, required surface quality, production volume and total manufacturing cost.
01 / PRECISION
Silica Sol Investment Casting
Used where complex geometry, fine surface finish and dimensional control are important, particularly for stainless and alloy steel components.
Explore process →
02 / LARGE CASTINGS
V-Process Casting
Vacuum-sealed molding for large and heavy valve bodies, where mold stability, dimensional control and efficient production are important.
Explore process →
03 / EFFICIENT PRODUCTION
Shell Molding
Resin-coated sand molding for repeatable production where casting economics, surface quality and production efficiency must be balanced.
Explore process →Vertical Manufacturing
From casting to tested valve.
Manufacturing control continues after casting. Each stage contributes to the final valve.
01
Casting
Material integrity and near-net geometry.
02
Heat Treatment
Microstructure and mechanical properties.
03
CNC Machining
Critical dimensions and geometric alignment.
04
Assembly
Component fit and operating consistency.
05
Pressure Test
Shell and closure performance verification.
06
Documentation
MTC, inspection and project records.
Quality & Compliance
Proof You Can Review.
Quality claims are supported by certification, material documentation and inspection records. View the original documents below.
Manufacturing Case
When the real problem is not the valve. It is the manufacturing detail.
A project required replacement lug valves after thread alignment problems affected installation. JRVAL addressed the manufacturing issue through controlled machining and expedited production.
200 Replacement valves
7 days Reported delivery
±0.10 mm Reported thread accuracy
Source Factory Casting → Machining → Assembly
Engineering Questions
Common questions before selecting a butterfly valve manufacturer.
At minimum, specify nominal size, pressure class, medium, operating temperature, connection type, valve design, seat requirement, body/disc materials, actuation and applicable standards.
Concentric, double-offset and triple-offset valves have different operating characteristics and service ranges. The selection should be based on temperature, pressure, shut-off requirement, cycling, media and valve size.
Casting affects material integrity, geometry, machining allowance and the quality of the final valve body. The appropriate casting route depends on material, size, geometry and production requirements.
Depending on the project, documentation may include material certificates, material list, inspection records, pressure-test reports, dimensional records, certificates and applicable conformity documents.
Engineering Review
Have a specification, drawing or difficult application?
Send us your valve size, pressure, medium, temperature, materials, required standards or project documents. Our engineering team can review the requirements before quotation.
