Custom Butterfly Valves
From stainless steel and ductile iron to PTFE-lined and high-temperature alloys, with options for flanged, lug, and wafer designs, we provide valves that meet exact material, size, and pressure specifications for water, chemical, and oil & gas systems.
Custom-Cast Butterfly Valves
Butterfly valves are critical components in industrial flow systems, often exposed to high pressures, repetitive operation cycles, and corrosive or abrasive media. In such demanding environments, every valve must deliver superior durability, precise dimensional accuracy, and reliable performance to ensure safety, efficiency, and long service life.
At DEZE Foundry, we specialize in producing custom-cast butterfly valves engineered to meet the exact requirements of our clients. Leveraging advanced casting technologies and rigorous quality control, we offer tailored solutions for flanged, lug, and wafer designs in materials ranging from stainless steel and duplex alloys to PTFE-lined or high-temperature metals.
Our comprehensive capabilities span engineering design, prototyping, tooling, precision casting, machining, heat treatment, and surface finishing.
Custom Butterfly Valves — Precision Solutions
Wafer Butterfly Valves
Lug Butterfly Valves
Flanged Butterfly Valve
Resilient Seated Butterfly Valve
Double Offset Butterfly Valves
Triple Offset Butterfly Valve
Hygienic Butterfly Valves
Butt Weld Butterfly Valves
Marine Butterfly Valves
Stainless Steel Butterfly Valves
WCB Steel Butterfly Valves
Ductile Iron Butterfly Valves
PTFE-lined butterfly valve
High Performance Butterfly Valves
Electric Actuation Butterfly Valve
Comprehensive Butterfly Valve Specifications
| Category | Specification Details |
|---|---|
| Size Range | NPS 2 – 48 (DN 50 – 1200) (custom-cast sizes up to DN 2000 available upon request) |
| Body Materials | Cast Iron (GG25), Ductile Iron (GGG40/50), Carbon Steel (WCB), Stainless Steel (CF8/304, CF8M/316), Duplex Stainless Steel (CD3MN/2205), Super Duplex (CD3MWCuN/2507), Nickel Alloys (Monel, Inconel — for corrosive service) |
| Temperature Range | -40°F to 600°F (-40°C to 315°C) depending on seat and body alloy |
| Stem Materials | Stainless Steel (SS410, SS416, SS630), Duplex SS, Monel K500, Inconel 718 |
| Disc Materials | Ductile Iron (coated with Nylon 11 or Epoxy), Aluminum Bronze, Stainless Steel (304 / 316 / 2205), Duplex / Super Duplex, Nickel Aluminum Bronze (NAB), Hastelloy |
| Seat Materials | EPDM, NBR/BUNA-N, FKM/Viton, PTFE, RPTFE, Silicone, Hypalon (bonded or replaceable seat options) |
| Body Styles | Wafer, Lug, Double-Flanged, U-Type Flanged, Grooved-End, High-Performance Double-Offset, Triple-Offset Metal-Seated |
| Pressure Ratings | PN10 / PN16 / PN25 / PN40; ASME Class 150 / 300; AWWA C504 Class 150B & 250B |
| Maximum Allowable Working Pressure (MAWP) | Standard: 150–250 psi (10–16 bar); High-performance: up to 740 psi (51 bar) (depending on size/material) |
| Shutoff Rating | • Bidirectional bubble-tight (soft seat) • Zero leakage (metal-seat TOV per API 609) |
| Flange Drilling Standards | ASME B16.1 Class 125, ASME B16.5 Class 150 & 300, EN 1092 PN 10/16/25/40, JIS 5K/10K/16K, ISO 7005 |
| Face-to-Face Standards | API 609 Category A (wafer/lug), API 609 Category B (high performance), EN 558 Series 13/14/16, ISO 5752 |
| Testing Standards | API 598, MSS SP-61, ISO 5208, EN 12266-1 & -2, AWWA C504 Hydrostatic Test |
| Certifications (Optional) | CE/PED, ATEX, SIL 2/3, ABS, DNV, LR, CCS, BV, WRAS, NSF-61, FDA contact materials |
| Actuation Options | Manual Lever, Gear Operator, Pneumatic Actuator, Electric Actuator, Hydraulic Actuator, Intelligent Control Actuators |
| Flow Characteristics | Equal percentage or linear (depends on disc geometry and application) |
| Typical Applications | Water & wastewater, HVAC, seawater, desalination, chemical processing, food & beverage, oil & gas, marine, power generation, mining, pulp & paper, fire protection |