CATEGORY LINE #9 5 Master B2B Products Indus Division 01 Engineering Directorate

Flanged Butterfly Valves

Double-eccentric flanged butterfly valves built to EN 593 and ISO 10631 standards with ductile iron body construction, stainless steel 316 disc sealing edges, and replaceable EPDM seat rings. Rated for bidirectional service across PN10, PN16, and PN25 pressure tiers with manual worm gearboxes or electric actuators. Essential for low-headloss flow regulation in large-diameter municipal water reservoirs, intake pump houses, and wastewater treatment plants.

Direct WhatsApp Desk 📁 Upload Multi-Item BOQ
Turnkey Master Solutions

Master B2B Product Specifications in Flanged Butterfly Valves

Review complete operational envelopes, engineering standards, and pre-staged inventory models ready for procurement across Iraq.

IND-PRD-000040 Active Staging Line

Double Eccentric Flanged Butterfly Valves (DN100–DN2400, PN10 / PN16 / PN25, EN 593)

Nominal Diameter Range: DN100 to DN2400
Pressure Ratings: PN10, PN16, PN25

Indus Industrial Group supplies heavy-duty Double Flanged Double Eccentric (High Performance) Butterfly Valves engineered...

✔ Double eccentric offset disc geometry eliminating seal friction and extending operating life.
✔ Ductile iron body and disc (EN-GJS-500-7) compliant with EN 593, EN 1074-2, and EN 558.
IND-PRD-000041 Active Staging Line

Concentric Rubber-Lined Flanged Butterfly Valves (DN50–DN1200, PN10 / PN16, EN 593)

Nominal Diameter Range: DN50 to DN1200
Pressure Classes: PN10, PN16

Indus Industrial Group provides heavy-duty Concentric Rubber-Lined Double Flanged Butterfly Valves engineered across nominal...

✔ Full vulcanized or replaceable EPDM/NBR body liner isolating valve body from line medium.
✔ Integrated rubber flange sealing faces eliminating the need for separate companion gaskets.
IND-PRD-000081 Active Staging Line

Lug & Wafer Type Resilient Seated Butterfly Valves (DN50–DN600, PN10 / PN16, EN 593)

Nominal Diameter Range: DN50 to DN600
Pressure Classes: PN10, PN16

Indus Industrial Group supplies heavy-duty Lug and Wafer Type Resilient Seated Butterfly Valves engineered across nominal...

✔ Compact lug and wafer designs reducing installation space and weight by up to 60%.
✔ Threaded full-lug body enabling dead-end isolation and downstream pipe removal under pressure.
IND-PRD-000082 Active Staging Line

Triple-Offset Metal-Seated High-Pressure Butterfly Valves (DN150–DN1600, PN25 / PN40, API 609)

Nominal Diameter Range: DN150 to DN1600
Pressure Ratings: PN25, PN40

Indus Industrial Group supplies heavy-duty Triple-Offset Metal-to-Metal Seated High-Pressure Butterfly Valves engineered...

✔ Triple-offset conical geometry eliminating seal rubbing, friction, and premature seat wear.
✔ Bi-directional zero-leakage shutoff (ISO 5208 Rate A) with laminated stainless steel/graphite seal.
IND-PRD-000083 Active Staging Line

Motorized Electric Actuator Flanged Butterfly Valves (DN150–DN2000, 400V Modulating, IP68)

Nominal Diameter Range: DN150 to DN2000
Pressure Ratings: PN10, PN16, PN25

Indus Industrial Group supplies heavy-duty Motorized Electric Actuator Double Flanged Butterfly Valves engineered across large...

✔ Smart quarter-turn electric actuator (IP68 submersible) with non-intrusive programming display.
✔ Full SCADA integration with 4–20mA analog position feedback and Modbus / Profibus fieldbus.
Technical Brief & Iraqi Standards

Field Engineering Analysis for Flanged Butterfly Valves

Operational specifications, material metallurgy, and field operating conditions synthesized from technical project submittals across Iraq.

Technical Brief 01

Double Eccentric Flanged Butterfly Valves (DN100–DN2400, PN10 / PN16 / PN25, EN 593)

Double Eccentric Flanged Butterfly Valves represent the benchmark isolation and flow control technology for large-diameter municipal water conveyance, raw river water booster mains, and water treatment plant...

Verified Submittal Full Submittal Specs →
Technical Brief 02

Concentric Rubber-Lined Flanged Butterfly Valves (DN50–DN1200, PN10 / PN16, EN 593)

Concentric Rubber-Lined Flanged Butterfly Valves provide a highly reliable, economical solution for flow isolation and throttling in municipal water distribution networks, wastewater treatment facilities, and...

Verified Submittal Full Submittal Specs →
Technical Brief 03

Lug & Wafer Type Resilient Seated Butterfly Valves (DN50–DN600, PN10 / PN16, EN 593)

Lug and Wafer Type Resilient Seated Butterfly Valves represent the premier compact isolation and throttling solution for plant rooms, pumping skid packages, water treatment dosing galleries, and industrial piping...

Verified Submittal Full Submittal Specs →
Technical Brief 04

Triple-Offset Metal-Seated High-Pressure Butterfly Valves (DN150–DN1600, PN25 / PN40, API 609)

Triple-Offset Metal-Seated Butterfly Valves (TOV) represent the pinnacle of rotary valve engineering for severe-service, high-pressure water conveyance, thermal power generation, and oil & gas facilities across Iraq....

Verified Submittal Full Submittal Specs →
Infrastructure & Project Deployment

Field Applications Across Iraq Infrastructure Corridors

Proven technical deployment envelopes across municipal trunk utilities, energy concessions, and civil engineering works in Iraq.

Deployment Corridor 01

Major municipal water transmission lines

Deployment Corridor 02

Tigris and Euphrates river raw water booster stations

Deployment Corridor 03

water treatment plant filter gallery manifolds

Deployment Corridor 04

thermal power plant cooling circuits

Deployment Corridor 05

reservoir dam outlet isolation lines

Deployment Corridor 06

Municipal water distribution branch networks

Deployment Corridor 07

wastewater treatment plant aeration manifolds

Deployment Corridor 08

industrial pump suction isolation lines

Tender & Specification Inquiries

Technical & Engineering FAQs for Flanged Butterfly Valves

Direct authoritative answers for procurement officers, consultant engineers, and EPC contractors specifying Flanged Butterfly Valves in Iraq.

Why are double eccentric butterfly valves chosen over gate valves for large diameters in Iraq?
For diameters of DN300 and above, double eccentric butterfly valves are substantially lighter in weight, require only 25% of the face-to-face length of gate valves, and operate with significantly lower closing torque. This dramatically reduces chamber excavation dimensions, structural concrete costs, and actuator sizing.
Are companion flange gaskets needed when installing rubber-lined butterfly valves?
No. The elastomeric body liner wraps around both flange faces, acting as an integrated full-face rubber gasket. Applying separate gaskets is unnecessary and can cause uneven bolt torque; the valve flanges seal directly against the mating pipe flanges.
What is the operational advantage of a Lug butterfly valve over a Wafer valve in Iraq?
A wafer valve is clamped between two flanges and cannot hold pressure if downstream piping is removed. A lug valve has threaded bolt lugs that allow either pipe flange to be unbolted independently, allowing maintenance crews to dismantle downstream pumps or meters while the lug valve isolates live upstream pressure.
How does the triple-offset design achieve zero seal friction in Iraq?
The three distinct angular and axis offsets create an elliptical, conical sealing path. The disc seal only contacts the seat at the exact point of final mechanical closure. Because there is zero rubbing during opening or travel, the metal seal will not gall, wear, or degrade, lasting decades in harsh abrasive Iraqi water.
Can the motorized butterfly valve be used for flow throttling as well as on-off isolation?
Yes. When fitted with a Class C modulating actuator, the valve accepts continuous 4–20mA analog control signals, positioning the disc accurately between 0° and 90° to regulate water flow and pressure with high repeatability.
Can the disc seal ring be replaced or adjusted on-site without removing the valve?
Yes. The EPDM profile seal ring is clamped onto the disc perimeter by a stainless steel retaining ring secured with hex-socket bolts. Technicians can adjust sealing compression or replace the rubber ring directly inside the valve vault without removing the valve body from the pipeline.
Integrated Infrastructure Procurement

Complementary Supply Lines in Division 01: Water & Wastewater

Turnkey civil & mechanical contractors can integrate engineering specifications across companion categories in this operating division.

COMPLEMENTARY LINE

HDPE PE100 Pressure Pipes

8 Active Products Explore Line →
COMPLEMENTARY LINE

End-Suction Water Pumps

8 Active Products Explore Line →
COMPLEMENTARY LINE

Water Chlorination Chemicals

8 Active Products Explore Line →
COMPLEMENTARY LINE

Ductile Iron Pipes

7 Active Products Explore Line →
COMPLEMENTARY LINE

HDPE Electrofusion Fittings

6 Active Products Explore Line →
COMPLEMENTARY LINE

HDPE Butt Fusion Fittings

6 Active Products Explore Line →