Lever
Fixed position notches set open, closed and intermediate stops.
ZPVE manufactures butterfly valves for engineers, distributors and project buyers sourcing water treatment, HVAC and process valves, built to GB, API, ASME, ANSI, JIS, BS and DIN standards.
Duty cycle, line pressure, media and installation space set the valve construction. Send your specification and our engineering team confirms the build before quoting.
Design, testing, face-to-face length, flange ends and pressure-temperature rating are each governed by a separate standard. A valve built to the wrong one will not fit the line or pass the witness test, regardless of how well it is made.
Pressure class and size range change with the disc geometry. A concentric butterfly valve and a triple eccentric butterfly valve are not rated the same, even at the same nominal diameter.
Confirm Your Specification| Governs | Standard |
|---|---|
| Design (national) | GB/T 12238 |
| Design (international) | API 609 |
| Shell and seat testing | API 598 |
| Face-to-face length | API 609 |
| Flange end dimensions | ASME B16.5 · ASME B16.47 Series A |
| Pressure-temperature rating | ASME B16.34 |
| Casting surface inspection | MSS SP-55 |
| Fire-safe design (triple eccentric) | API 607 |
| Actuator mounting flange | ISO 5211 |
| Regional / project-specified | DIN · JIS · BS EN 593 |
| Structure | Pressure Class | Size Range | Operation |
|---|---|---|---|
| Concentric | PN10 · PN16 · Class 150 | DN50–DN3000 | Lever 2″–4″ · gear 5″+ |
| Double eccentric | Class 150 | 2″–100″ | Lever 2″–4″ · gear 5″+ |
| Double eccentric | Class 300 | 2″–60″ | Gear operated |
| Triple eccentric | Class 150 | 3″–80″ | Gear operated |
| Triple eccentric | Class 300 | 3″–40″ | Gear operated |
| All structures | Class 600 | On request | Gear or actuated |
ZPVE’s overall manufacturing range spans DN6–DN3000 and Class 150–4500 across the full valve line. Butterfly valves use a narrower range within that capability, shown in the table above.
Top mounting follows ISO 5211 across all four options, so the valve accepts a buyer-specified actuator without modification. Manual operation needs no further input from you; electric and pneumatic actuation carry choices that lock in at the factory.
Fixed position notches set open, closed and intermediate stops.
Handwheel turns reduce input torque for large-diameter discs.
A motor mounted on the ISO 5211 flange drives the disc by wire, not air.
Compressed air drives the disc through single or double acting cylinders.
A manual override gearbox is available on electric and pneumatic actuators for emergency operation.
Specify Your ActuationWe coordinate the butterfly valve manufacturing workflow from material preparation and machining to assembly, adjustment, inspection and packing. Every valve is built to the approved material grade, pressure class and connection standard before it leaves the workshop.
Butterfly valve bodies, discs and stems start from certified raw material matched to the grade on the order, with composition, hardness and casting condition checked before machining.
Body cavities, seating surfaces, flange faces and stem bores are machined to the tolerances the pressure class requires, with dimensional checks at set stages through the process.
Disc, seat and stem components are matched to the valve’s material and pressure class, with sealing surfaces and stem alignment checked before the parts come together.
The valve is fitted with the specified drive, lever, gearbox, electric or pneumatic, with mounting alignment and drive torque checked against the valve size.
Valve travel, operating torque and seating are checked through a full open-close cycle, with any binding or seating fault corrected before testing.
Material composition and hardness are verified by spectrometer analysis, followed by ultrasonic, magnetic particle and penetrant testing, pressure and leakage tests, then coating and export packing.
10,000+ tonnes of industrial valves manufactured annually.
Butterfly valves control large-diameter flow where installation space and valve weight are limited. We supply them into water networks, building services, process plants, marine systems and mineral processing lines across 60 countries.
Each industry sets its own seat material, body rating and actuation requirement. Send us the medium and line conditions and we confirm the build against them.
Discuss Your ApplicationButterfly, gate and ball valves cover different points on the pressure, size and duty range. We manufacture all three, so a mixed valve list moves through one production and inspection process instead of separate suppliers.
| Dimension | Butterfly Valve | Gate Valve | Ball Valve |
|---|---|---|---|
| Face-to-Face Length | Shortest | Longest | Medium |
| Weight at Equal DN | Lightest | Heaviest | Medium |
| Operation | Quarter-turn | Multi-turn | Quarter-turn |
| Cost at Large Diameter | Lowest | Highest | High |
| Typical Leakage Class | Class IV–VI | Class IV–VI | Class VI |
| Flow Regulation | Good with a positioner | Not suited to throttling | Limited, needs a V-port |
| Pressure Class Range | Up to Class 300 | Up to Class 2500 | Up to Class 2500 |
Ratings above compare typical construction at the same nominal size. Exact figures depend on structure, seat material and pressure class.
MOQ depends on the valve size, structure and specification. Send us your requirements and we confirm a minimum order quantity with the quotation.
Lead time depends on order size, valve structure and whether the specification is standard or custom. We confirm a delivery date with every quotation.
Warranty terms are confirmed with your quotation and depend on the valve structure, application and any project-specific requirements. Ask us for the terms that apply to your order.
Spare parts availability depends on the valve structure and seat material. Confirm your valve model with us and we advise on parts and lead time.
We hold ISO 9001 certification and manufacture to GB, API, ASME, ANSI, JIS, BS and DIN standards, depending on the project.
Yes. Send your drawing, datasheet or valve list and we confirm the build against it before quoting.
Yes, we accept third-party inspection nominated by the buyer.
A wafer body sits between two pipe flanges and is held in place by through-bolts running the full length of the joint. A lug body has threaded inserts around its perimeter, so each side of the line can be bolted and unbolted independently — useful when one side of the valve may need to come out for maintenance while the other side stays under pressure.
Request a quote
Send us the medium, size and pressure for your project. Our engineers reply with a valve recommendation, a datasheet and a quotation.
Prefer email or WhatsApp? lucas@zpvevlave.com · +86 182 0323 5561
ZPVEVLAVE · Industrial Valve Manufacturer
Contact ZPVEVLAVE for industrial valve enquiries, technical information, project quotations and ordersupport.
+86 18203235561
lucas@zpvevlave.com
