MacoTango supplies industrial control valves and automated valve packages configured for flow regulation, process isolation and project-specific applications across oil and gas, chemical, power, water treatment and other process industries.
MacoTango supplies pneumatic and electric actuated butterfly valves for isolation and control duties in industrial piping systems. Centerline, double-offset, triple-offset and fluorine-lined configurations can be matched with the required actuator, control signal and accessories.
MacoTango supplies pneumatic and electric actuated butterfly valves for industrial isolation, equipment interlocking, remote operation and specified modulating duties. Configure centerline, double-offset, triple-offset or fluorine-lined valve bodies with the actuator, control signal, fail action and accessories required by the application.
Send the line size, piping and face-to-face standard, medium, operating and design conditions, maximum differential pressure across the closed disc, required sealing direction and automation requirements. The proposed configuration should state its selection basis, included scope, assumptions and deviations before approval.
Upload a datasheet, valve list or existing GA drawing in the RFQ section below.
Line size alone is not a selection basis. Define the required duty and the controlling operating, shutdown, cleaning and failure cases first. Then confirm the valve construction, seat or lining, pressure-temperature rating, flow direction, torque demand and piping interface against the selected product.
| Required duty | Initial construction to review | What must be checked before selection |
|---|---|---|
| General industrial on-off service with a compatible resilient or soft seat | Centerline butterfly valve | Fluid compatibility, minimum and maximum temperature, maximum closed-disc differential pressure, shut-off acceptance, cycling and flange/disc clearance |
| Service where reduced seat contact during travel is required | Double-offset butterfly valve | Seat design, preferred flow and sealing direction, pressure-temperature rating, differential pressure, cycling, required leakage acceptance and actuator torque |
| Metal-seated isolation or a project specification that calls for triple-offset geometry | Triple-offset butterfly valve | Direction-specific rating and leakage acceptance, sealing-ring materials, thermal and mechanical load cases, torque, installation orientation and required test scope |
| Corrosive service requiring a lined wetted path | Fluorine-lined butterfly valve | Exact chemistry and concentration, temperature, pressure or vacuum, permeation, solids or abrasion, lining material, lining coverage and risk of installation damage |
| Modulating service | A sized butterfly control package or the Control Valve Series | Required flow coefficient across all operating cases, normal disc position, installed characteristic, pressure recovery, cavitation or noise risk, positioning stability and required shut-off duty |
A positioner does not by itself make a butterfly valve suitable for stable control. If the required operating range and installed response cannot be demonstrated for the selected butterfly valve, review an engineered control valve instead.
Review the Control Valve SeriesA reviewable quotation should make the proposed assembly and supply boundary explicit. It should not replace missing service data with unstated assumptions.
| Proposal item | What the proposal should state |
|---|---|
| Butterfly valve construction | Centerline, double-offset, triple-offset or lined construction; wafer, lug or flanged body; nominal size; pressure rating; connection and face-to-face basis; preferred flow or sealing direction where applicable |
| Materials and sealing system | Proposed body, disc, shaft, seat or lining, packing and gasket materials; required leakage acceptance and closure-test direction |
| Actuator and control package | Pneumatic or electric actuator basis; action; minimum air supply or electrical supply; fail position; control signal; feedback; included accessories; manual override if included |
| Selection basis | The operating and design cases used; maximum closed-disc differential pressure; torque inputs and allowances; modulating sizing basis when flow regulation is specified |
| Supply boundary and documents | Valve, actuator, mounting parts and accessories included or excluded; datasheet, GA drawing, actuator data, inspection and document scope; nameplate, packing and export documents when ordered |
| Assumptions and deviations | Every TBD item, engineering assumption, specification exception and commercial exclusion that requires buyer review or approval |
A complete RFQ helps technical and procurement teams compare the proposed assembly on the same basis. Upload a datasheet, valve list, piping specification or existing GA drawing. Values that are not yet confirmed may be marked TBD and listed for clarification.
Define the process duty, medium and all operating, design and transient cases that may control butterfly valve construction, sealing, torque and shut-off or modulating performance.
Duty and flow direction: On-off, equipment interlocking, emergency action or modulating duty; normal flow direction; required sealing direction; normal position and required fail position
Process medium: Fluid name, complete composition, concentration, phase, solids, contaminants, viscosity and cleaning or flushing medium where relevant
Operating conditions: Minimum, normal and maximum pressure and temperature; inlet and outlet pressure or maximum differential pressure across the closed disc
Design and transient cases: Design pressure and temperature; startup, shutdown, upset, cleaning, vacuum or reverse-flow cases that may control selection
Shut-off or control requirement: Required leakage or closure acceptance, test direction and isolation differential pressure; for modulating duty, provide minimum, normal and maximum flow and available pressure drop
Provide the piping interface, preferred valve construction, materials, sealing or lining details and the existing installation information required for replacement enquiries.
Valve and piping interface: DN/NPS, wafer, lug or flanged body, pressure class, flange standard, face-to-face requirement, pipe inside diameter and available disc clearance
Construction preference: Centerline, double-offset, triple-offset or lined construction if already specified; otherwise provide the application data for review
Materials: Required body, disc, shaft, seat or lining, packing and gasket materials; corrosion, erosion, temperature or compatibility concerns
Seat or lining details: Resilient, PTFE-based, metal-seated or specified fluoropolymer lining; required lining coverage and any vacuum, permeation, solids or abrasion concern
Replacement data: Existing datasheet, nameplate, GA drawing, face-to-face dimension, flange details and clear installation photos for replacement enquiries
Define the pneumatic or electric actuator supply, command and feedback requirements, specified accessories, cycling conditions and required action after loss of air, power or signal.
Pneumatic actuation: Minimum and normal air pressure, double-acting or spring-return action, solenoid arrangement, required operating time and air-quality requirement
Electric actuation: Voltage, phase, frequency, duty cycle, operating time, enclosure and required behavior on loss of power
Signal and feedback: On-off, floating or modulating command; positioner signal; open-close feedback; local indication and communication requirement
Accessories and manual operation: Solenoid valve, limit switches, positioner, filter regulator, booster, air-lock device, manual override or other specified accessories
Cycling and fail action: Expected cycle frequency, long idle periods, required fail open, fail closed or fail in place action and the process consequence of failure
State the site and installation constraints together with project, inspection, documentation, marking, packing and commercial scope requirements.
Site conditions: Indoor or outdoor installation, ambient range, hazardous-area requirement, enclosure or ingress requirement, corrosion environment and available maintenance access
Installation constraints: Shaft orientation, actuator position, nearby reducers or fittings, insulation, support, access and space limitations
Project data: Quantity, tag numbers, project specification, destination, required delivery documentation and any inspection or witness points
Documents and marking: Datasheet, GA drawing, actuator data, material records, test reports, inspection records, coating details, nameplate language, OEM marking, packing and export-document requirements
Commercial scope: Required spares, excluded items, quotation currency or trade terms if applicable to the enquiry
The applicable tests and records depend on the valve construction, purchase specification and confirmed order scope. A shell test, closure test, material record and actuator function check address different claims and should not be treated as interchangeable evidence.
The approved datasheet, bill of materials, GA drawing, tag data and nameplate details should identify the valve and actuator configuration being supplied.
Material certificates, traceability records or PMI should be requested only for the components and verification scope specified in the order. The record should be traceable to the supplied item and approved material list.
The agreed inspection scope may verify face-to-face dimensions, flange or connection details, disc clearance, actuator mounting, travel stops and overall package dimensions against the approved drawing.
Define the applicable standard or project procedure, test medium, pressure, duration, test direction, closure force or torque basis, acceptance criterion and required record. A shell test does not by itself prove seat leakage performance.
When included, the function check should identify the configured actuator, supply condition, opening direction, full travel, stop settings, feedback and required fail behavior. A no-load cycle does not prove installed performance at the maximum differential pressure.
Confirm the exact drawings, datasheets, actuator data, material records, test reports, inspection records, coating documents, nameplate files, packing documents and export records required before release.
Document availability and test scope must be confirmed in the quotation and purchase order. Do not infer certification, witnessed testing or a specific acceptance standard from this page alone.
Send the valve size, pressure rating, connection, medium, temperature, body and disc material, seat requirement, operating frequency and quantity. Include the actuator type, air pressure or voltage, control signal, fail position and accessory requirements.
For replacement projects, provide the existing valve data sheet, flange standard, face-to-face dimension, actuator model and clear installation photos. This helps review piping and automation compatibility before quotation.
Tell us what the valve must control, isolate or route. Upload your datasheet, valve list, drawing or project specification so the valve series, materials, trim, actuation, accessories and document scope can be reviewed together. If information is incomplete, mark the missing items as TBD and include the available operating data.
Quick answers for industrial buyers selecting actuated butterfly valves, actuator types, body styles, seat materials and quotation requirements.
An actuated butterfly valve combines a quarter-turn butterfly valve with a pneumatic or electric actuator for remote isolation, flow regulation or process interlocking.
Choose pneumatic actuation for fast operation, frequent cycling and spring-return fail action where compressed air is available. Choose electric actuation where electrical power is preferred and the required operating speed and duty cycle fit the actuator.
Actuator torque is selected from seating, unseating and dynamic valve torque at the maximum differential pressure, with adjustments for seat material, temperature, medium and an appropriate sizing margin.
Wafer valves fit between two flanges, lug valves use threaded body lugs for bolting and flanged valves include integral flanges. The correct choice depends on piping standard, installation, pressure and maintenance requirements.
Use a high-performance offset design when pressure, temperature, cycling or shutoff requirements exceed the practical range of a concentric resilient-seated valve.
Triple-offset valves are preferred for demanding services requiring metal seating, reduced seal rubbing, higher temperature capability or project-specified shutoff performance.
Yes. A properly sized butterfly valve with a positioner or modulating electric actuator can regulate flow. Valve type and normal disc position should be checked for the required control range.
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