Editorial Technical Reference

Pressure Vessel Body

This page explains how Pressure Vessel Body is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

The main structural component of a pulsation dampener that contains and withstands fluid pressure.

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Product Specifications

Technical details and manufacturing context for Pressure Vessel Body

Definition
The pressure vessel body is the primary structural component of a pulsation dampener (suction & discharge) that forms the containment chamber for fluids under pressure. It provides the mechanical strength to withstand internal pressure fluctuations while maintaining structural integrity and safety. As part of the dampener assembly, it houses the internal components and interfaces with piping connections. The body is typically fabricated from carbon steel, stainless steel, or alloy steel, with material grade Q345R as a common reference (alternatives include 16MnDR or 304). Design parameters include a maximum allowable working pressure of 1.0–1.6 MPa, design temperature range of -40 to 150 °C, inner diameter of 200–600 mm, wall thickness of 6–20 mm, volume of 10–100 L, surface roughness of Ra 3.2–6.3 μm, diameter tolerance of ±0.5 mm, weight of 50–500 kg, and hydrostatic test pressure of 1.25–2.0 MPa. These values are directory reference ranges and must be confirmed for the actual model and application. The body is designed and verified according to standards such as GB 150, GB/T 713, GB/T 1031, and GB/T 1804. It is essential to verify model-specific values and standards with the legal manufacturer or supplier before procurement or use.
Working Principle
The pressure vessel body functions as a rigid containment structure that maintains its shape under varying internal pressures. It distributes stress evenly across its surface to prevent deformation or failure, while providing a sealed environment for fluid pressure equalization within the pulsation dampener system. The body's wall thickness and material properties are selected to withstand the maximum allowable working pressure and temperature, ensuring structural integrity under cyclic loading. The internal volume accommodates fluid and dampens pressure pulsations, while the surface finish and tolerances ensure proper sealing and fit with end caps and nozzles.
Common Materials
Carbon Steel, Stainless Steel, Alloy Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Design Pressure1.0–1.6 MPaMaximum allowable working pressureGB 150
Design Temperature-40–150 °CMaterial properties must be verified at extremesGB 150
Inner Diameter200–600 mmDetermines flow capacity and volume
Wall Thickness6–20 mmCalculated based on pressure and diameterGB 150
Volume10–100 LNominal capacity for pulsation dampening
Material GradeQ345RPressure vessel steel; alternatives: 16MnDR, 304GB/T 713
Surface RoughnessRa 3.2–6.3 μmInternal surface finish affects cleaning and corrosionGB/T 1031
Tolerance on Diameter±0.5 mmEnsures proper fit with end caps and nozzlesGB/T 1804
Weight50–500 kgDepends on size and wall thickness
Hydrostatic Test Pressure1.25–2.0 MPa1.25 times design pressure for proof testGB 150

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Shell Section Part
    Main cylindrical pressure containment structure
    Material: steel
  • End Caps/Heads Part
    Closure elements at both ends of the cylindrical shell
    Material: steel
  • Nozzles/Connections Part
    Fluid inlet and outlet connections
    Material: steel
  • Support Lugs Part
    Mounting points for installation and support
    Material: steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pressure Vessel Body.

Dampener Shell Pressure Chamber Vessel Housing

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Pulsation Dampener (Suction & Discharge)
View system integration details

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Up to 300 bar (4350 psi)
other spec: Flow rate: 0-500 L/min, Slurry concentration: ≤40% solids by weight
temperature: -20°C to 150°C
Media Compatibility
✓ Hydraulic fluids (mineral oil-based) ✓ Process water (pH 6-8) ✓ Non-corrosive gases (nitrogen, air)
Unsuitable: Highly corrosive media (e.g., concentrated acids, strong oxidizers)
Sizing Data Required
  • Maximum operating pressure (bar/psi)
  • Fluid volume requirement (liters/gallons)
  • Pulsation frequency (Hz) and amplitude

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Stress Corrosion Cracking (SCC)
Cause: Combination of tensile stress (residual or operational) and corrosive environment (e.g., chlorides, sulfides) leading to crack initiation and propagation, often accelerated by cyclic loading or temperature fluctuations.
Creep and Thermal Fatigue
Cause: Long-term exposure to high temperatures and pressure causing gradual deformation (creep) and eventual rupture, compounded by thermal cycling that induces stress concentrations at welds or geometric discontinuities.
Maintenance Indicators
  • Visible bulging, distortion, or localized swelling on the vessel surface indicating overpressure or material degradation.
  • Audible hissing, popping, or cracking sounds from the vessel, suggesting leaks, crack propagation, or internal component failure.
Engineering Tips
  • Implement regular non-destructive testing (NDT) such as ultrasonic thickness gauging and radiographic inspection to monitor wall thinning, cracks, and weld integrity, especially in high-stress areas.
  • Control operating parameters strictly within design limits (pressure, temperature, cycles) and use corrosion inhibitors or protective coatings compatible with the process media to minimize environmental degradation.

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 16528: Boilers and pressure vessels ASME BPVC Section VIII: Rules for Construction of Pressure Vessels EN 13445: Unfired pressure vessels

Quoted from the published standard.

Manufacturing Precision
  • Wall thickness: +/-5% of nominal thickness
  • Circumferential weld alignment: +/-1.5mm
Quality Inspection
  • Hydrostatic pressure test
  • Ultrasonic testing (UT) for weld integrity

Manufacturers of Pressure Vessel Body

Manufacturer profiles associated with Pressure Vessel Body.

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Frequently Asked Questions

What materials are commonly used for the pressure vessel body?

Common materials include carbon steel, stainless steel, and alloy steel. A typical material grade is Q345R, with alternatives such as 16MnDR or 304. The specific material must be confirmed for the intended application.

What design pressure and temperature ranges are typical?

The design pressure range is 1.0–1.6 MPa, and the design temperature range is -40 to 150 °C. These are reference values; actual design limits depend on the specific model and must be verified with the manufacturer.

Which standards apply to the pressure vessel body?

Relevant standards include GB 150 for pressure vessel design, GB/T 713 for material grades, GB/T 1031 for surface roughness, and GB/T 1804 for tolerances. Compliance should be confirmed with the supplier.

How is the hydrostatic test pressure determined?

The hydrostatic test pressure is typically 1.25 times the design pressure, resulting in a range of 1.25–2.0 MPa. This test verifies the vessel's integrity and must be performed according to applicable standards.
Data basis: editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

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