4 Inch Brass Ball Valve Price | Heavy Duty Industrial Grade
Get best 4 inch brass ball valve price for heavy-duty pipelines. Full port, NPT threaded, 600 WOG, forged brass body, PTFE seats. Certified to EN 13828 & NSF/ANSI 61. Ideal for water, gas, oil. Factory direct.
Description
For large‑bore piping systems, shut‑off valve reliability and durability directly determine overall pipeline safety as well as operational‑maintenance expenditure. The 4 inch brass ball valve is engineered for heavy‑duty industrial service. Built with a forged brass body and full port flow path, it delivers bubble‑tight shut‑off and minimal pressure drop for water supply, natural gas main branches, cooling circulation loops and oil product transfer. Its NPT female thread ends fit standard large‑bore US‑spec piping for straightforward installation, while its 600 WOG pressure rating satisfies most industrial service requirements.
Material Grades & Manufacturing Standards
‑ Body / End Cap: CW617N European‑standard forged brass with dezincification resistance and stress‑corrosion tolerance. Finite‑element‑optimized wall thickness yields superior pressure‑bearing performance compared with ordinary cast brass.
‑ Ball: Hard‑chrome‑plated brass ball with surface hardness ≥900 HV and polished surface finish Ra≤0.4 μm. It achieves low operating torque and enhanced wear resistance.
‑ Seat & Sealing Elements: 25 % glass‑fiber‑reinforced PTFE featuring anti‑cold‑flow property and low friction. Sealing performance reaches ISO 5208 Rate A (zero‑leakage).
‑ Stem: anti‑blowout construction with dual O‑ring seals; static‑grounding device available as an option to guarantee safe pressurized operation.
Every unit undergoes hydrostatic shell test at 1.5 times nominal pressure plus low‑pressure air tightness test at 1.1 times nominal pressure. Certifications including EN 13828, NSF/ANSI 61 for potable‑water service and API 607 fire‑safety certificate are available upon request.
Technical Specifications
| Parameter | Specification |
|---|---|
| Nominal Size | DN100 (4 inch) |
| End Connection | NPT female thread (BSPP or flanged ends on custom order) |
| Construction | 2‑piece, Full Port |
| Nominal Pressure | PN25 (25 bar) |
| Max Working Pressure (Water / Oil) | 600 WOG (42 bar @ ambient temperature) |
| Operating Temperature | ‑20℃ ~ +120℃ (PEEK seat optional for steam up to 180℃) |
| Compatible Media | Water, natural gas, oil products, non‑corrosive chemical solvents |
| Flow Coefficient (Cv) | Full Port Cv ≈ 220 for high‑flow large‑bore pipelines |
| Face‑to‑Face Dimension | ISO 5752 / GB/T 15188.3 |
Typical Applications
‑ Municipal water‑supply mains and sectional isolation: large‑size full port configuration preserves delivery capacity with good pressure‑withstand and anti‑corrosion capability. ‑ Natural‑gas pressure‑regulating stations and long‑distance branch lines: meets Rate‑A gas‑valve leakage criteria; fire‑safe variant optional. ‑ Industrial cooling‑water circulation: isolation for heat‑exchanger and cooling‑tower inlet / outlet points, facilitating routine servicing. ‑ Petrochemical auxiliary piping: transfer of low‑pressure oil products and mild chemical solvents (excluding strong acids); brass offers reliable corrosion resistance. ‑ Fire‑protection water networks: shut‑off for fire‑pump outlets or zone isolation; UL/FM‑certified versions are available.
Why Choose Our 4‑Inch Brass Ball Valve
‑ Large‑bore performance: full port geometry delivers Cv up to 220 and minimized system pressure loss, ideal for high‑flow‑demand working conditions. ‑ Comprehensive certification portfolio: potable‑water NSF, gas‑service AGA/UL and fire‑safety API 607 approvals support export compliance for European and North‑American markets. ‑ Robust mechanical layout: 2‑piece forged‑brass body enables internal component replacement without full‑pipeline disassembly during maintenance. ‑ Readily‑available stock: standard NPT configurations kept in inventory; custom options include modified handle colours, extended stems and mounting interfaces for electric / pneumatic actuators.
FAQ
Q1: Can the 4 inch brass ball valve be deployed for high‑pressure natural‑gas pipelines? What is its maximum allowable working pressure?
A: This standard model carries a 600 WOG rating (42 bar at ambient temperature) and suits medium‑pressure natural‑gas applications up to 25 bar. For higher‑pressure scenarios such as Class 300 and above, fully stainless‑steel or forged‑steel ball valves are recommended. Custom‑built ANSI‑compliant Class 600 brass ball valves are also available; please provide detailed operating‑condition parameters for quotation.
Q2: What key points should be observed during installation of large‑bore brass ball valves?
A: The valve is non‑directional, yet orient the handle upward or horizontally for convenient manipulation. For threaded joints, apply appropriate thread‑seal tape or pipe compound and control tightening torque to prevent body distortion. Weighing roughly 12‑15 kg, this large‑size full port valve requires dedicated pipe supports to bear its weight instead of relying on connected piping.
