Name: Stainless Steel Investment Casting Butterfly Valve Body
Brand: jzcastings.com
Availability: InStock
Rating: 5 (1 reviews)

Description

Stainless Steel Investment Casting Butterfly Valve Body：Precision-Engineered for High-Performance Flow Control
Key Features

Material Excellence
- Grade: 304/316L stainless steel (optional duplex/super duplex grades).
- Corrosion Resistance: Withstands aggressive media, including seawater, acids, and chlorides.
- Temperature Range: -20°C to +180°C (dependent on sealing material).
Precision Casting Advantages
- Tolerances: ±0.1mm (critical for leak-free performance).
- Surface Finish: Ra ≤ 3.2 μm (reduces friction and wear).
- Complex Geometry: Enables integrated flow channels and lightweight designs.
Structural Integrity
- Pressure Rating: ANSI Class 150/300 (PN16/PN25 compatible).
- Wall Thickness: Optimized for strength without unnecessary weight.
- ISO 5211 Mounting Flange: Standardized interface for actuators/gears.
Leak-Proof Design
- Seat Compatibility: Fits EPDM, NBR, PTFE, and metal seats.
- Bubble-Tight Sealing: Minimizes fugitive emissions (compliant with ISO 5208 Rate A).

Applications

Water & Wastewater: Flow regulation in pipelines and treatment plants.
Chemical Industry: Handling corrosive liquids and slurries.
HVAC Systems: Control of heating/cooling fluids in large buildings.
Marine & Offshore: Saltwater-resistant valves for ships and oil platforms.

Manufacturing Process

Wax Pattern Creation: High-precision molds ensure exact replica dimensions.
Ceramic Shell Coating: Protects against metal penetration and enhances surface quality.
Dewaxing & Sintering: Prepares the shell for molten stainless steel pouring.
Post-Casting Operations:
- Heat treatment (solution annealing) for stress relief.
- CNC machining of critical surfaces (flange, bore, seat groove).
- Non-destructive testing (X-ray, dye penetrant inspection).

Quality Certifications

Standard	Scope
ISO 9001	Quality management system compliance.
ASTM A351	Material specification for CF8/CF8M castings.
PED 2014/68/EU	EU pressure equipment directive (optional).
API 609	Butterfly valve design standard (optional).

Why Choose This Product?

Cost-Effective: Investment casting reduces machining time vs. forging/welding.
Longevity: Stainless steel resists pitting, crevice corrosion, and erosion.
Customization: Available in wafer, lug, or flanged configurations (DN50–DN1200).

"Precision-Cast for Performance. Built to Last in Harsh Environments."

Silica Sol Precision Casting Process

STEP 01

Wax Pattern Creation

Wax patterns are produced according to the customer’s CAD drawings or samples. This step determines the final dimensions, shape, and surface quality.

STEP 02

Shell Building with Silica Sol Slurry

The wax pattern is repeatedly dipped in a high-purity silica sol slurry and coated with refractory zircon sand, forming a strong ceramic shell.

STEP 03

Drying

Each layer is dried in a constant temperature and humidity environment to avoid cracks and ensure shell integrity.

STEP 04

Dewaxing & Shell Sintering

Wax is removed, and the ceramic shell is sintered at high temperature to achieve strength and dimensional stability.

STEP 05

Metal Pouring

Molten stainless steel 304, 316, carbon steel, alloy steel, or non-ferrous alloys are poured into the shell.

STEP 06

Shell Removal & Cleaning

The shell is broken away, and the raw casting is cleaned of any residual material.

STEP 07

Heat Treatment & Finishing

Heat treatments such as annealing, hardening, tempering, or surface hardening are applied to improve mechanical properties. Surface treatments like electropolishing or mirror polishing are available upon request.

Advantages of Silica Sol Investment Casting

· High Dimensional Accuracy – Tolerance grade CT4–CT6, ISO 8062 standards.
· Excellent Surface Finish – Ra 1.6–3.2 μm as-cast, Ra 0.8–3.2 μm after machining.
· Complex Shape Capability – Thin walls (0.5–0.8 mm) and intricate geometries.
· Material Versatility – Stainless steel, carbon steel, alloy steel, aluminum alloys, copper alloys.
· Reduced Machining – Near-net-shape production reduces post-processing time and cost.
· OEM & ODM Service – Fully customized according to drawings or samples.

Technical Specifications

Parameter	Specification
Materials	SS304 (CF8 / 1.4308), 304L (CF3), 316 (CF8M / 1.4408), 316L (CF3M / 1.4404 / 1.4409), WCB (1.0619), Carbon Steel #25/#35/#45, Alloy Steel, Aluminum Alloy, Copper Alloy
Casting Process	Silica Sol Precision Casting / Investment Casting / Lost-Wax Casting
Machining	CNC Machining Centers, CNC Lathes
Casting Tolerance	ISO 2768-mK, VDG P690 D1-D2, ISO 8062-3-2007 DCTG4-6, GCTG4-6
Casting Roughness	Ra 1.6–3.2 μm
Machining Tolerance	±0.005 mm, ISO 2768-f
Machining Roughness	Ra 0.8–3.2 μm
Weight Range	0.01–150 kg
Min. Wall Thickness	0.5–0.8 mm
Furnace Capacity	200 T
Finishing	Acid Passivation, Electropolishing, Mirror Polishing, Custom Surface Treatments
Heat Treatment	Annealing, Normalizing, Hardening, Tempering, Surface Hardening

Applications

Our silica sol precision castings are widely used in:
· Aerospace components
· Automotive parts & valve bodies
· Marine and shipbuilding hardware
· Medical instruments & surgical tools
· Industrial machinery & pump housings
· Agricultural machinery parts
· Architectural fittings & decorative hardware
· Pipe fittings & flanges
· OEM/ODM custom projects

Quality Assurance

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Get a Free Quotation Today

Send us your drawings or samples, and our engineering team will provide technical consultation, 3D modeling, and a competitive quotation within 24 hours.

Why Choose Us

32+ years

professional
industry production experience and
experienced R&D team and
international trade service team.

Attentive pre-sales

And after-sales service. timely
resolution of the customers'
problems.

Quality Assurance

Strict material
selection and quality inspection system.
strict QC system to guarantee the
superior quality. The best products
at the most reasonable price.

OEM&ODM Customisable

According to the customers' drawings
or products.we have experienced
techinicians to help you design
what you want.

Stainless Steel Investment Casting Butterfly Valve Body

Description

Stainless Steel Investment Casting Butterfly Valve Body：Precision-Engineered for High-Performance Flow ControlKey Features

Applications

Manufacturing Process

Quality Certifications

Why Choose This Product?

Technical Specifications

Stainless Steel Investment Casting Butterfly Valve Body：Precision-Engineered for High-Performance Flow Control
Key Features