For over four decades, Mahshir has produced a wide range of brass valves for residential, commercial, and industrial use. The company integrates hot forging, precision multi-axis CNC machining, and end-to-end quality control. All steps—bar cutting, forging, machining, finishing, plating, and final packing—are performed in-house. This ensures full material traceability, dimensional control at every stage, and valves with low internal stress and long service life. Lead-free brass, pure PTFE seats, and hydrocarbon-resistant O-rings make Mehshir valves safe for potable water and natural gas applications, meeting Iran National Standard (ISIRI) and NSF/ANSI 61 requirements.
Key Manufacturing Technologies at Mahshir
- Isotropic hot forging: Brass billets are forged into dense, homogeneous preforms, improving body strength by up to 30% vs. casting.
- Multi-axis CNC machining: Class-3 threads and precisely turned seats to Ra ≤ 0.8 μm for minimal pressure drop and internal leakage.
- Surface finishing & dual plating: Nickel undercoat with bright or satin chrome for 96-hour resistance in the ISO 9227 salt-spray test.
- 100% hydrostatic & pneumatic testing: Every valve is tested at 1.5× rated pressure; results are logged in the quality database.
Product Range & Technical Specifications
(Mehshir currently manufactures 180+ SKUs; nominal diameters in inches.)
| Product Family | Size Range | Max Working Pressure (bar) | Working Temp (°C) | Seal / Media |
|---|---|---|---|---|
| Lockable gas ball valve, aluminum handle | ½ – 2 | 25 | −20 to +120 | PTFE |
| Water ball valve, lever handle | ½ – 2 | 40 | 0 to +110 | PTFE |
| Boiler service valve with filter | ½ | 10 | 0 to +90 | AISI 204 SS + polyester mesh |
| Brass float valve | ¾ – 2 | 12 | 0 to +80 | NBR |
| Spring check valve, threaded | ½ – 2 | 16 | 0 to +120 | NBR |
Gas Valves
A one-piece forged body, chrome-plated ball, and red powder-coated aluminum handle deliver safe operation in gas distribution networks. Full-bore design minimizes line pressure loss.
Non-Gas Valves
For cold and hot water lines, building services, and light hydraulics. Yellow or black handles. Materials and tolerances match the gas models, with sealing optimized for non-corrosive fluids.
Boiler Service Valves
The filtered version uses a 160-μm stainless mesh to stop debris entering the heat exchanger. It can extend pump and exchanger life up to 2×. The compact body installs directly on boiler inlets/outlets without adapters.
Float & Level Control Valves
A forged brass stem and impact-resistant ABS float ensure reliable operation in cooling-tower tanks and potable reservoirs. The cut-off/turn-on angle is adjustable ±5° for precise level control.
Spring & Swing Check Valves
A 304 stainless spring with constant rate supports vertical or horizontal installation. A 0.2-bar return force helps suppress water hammer in pumping systems.
Engineering Advantages
Benchmark vs. Market Average
| Feature | Mehshir | Market Avg. |
|---|---|---|
| Body wall thickness (mm) | 4 | 3 |
| Closing torque (Nm) | ≤ 3 | 5 |
| 10k-cycle endurance, leak-free | 98% | 85% |
| Instantaneous over-pressure (bar) | 60 | 45 |
| Warranty (years) | 10 | 3–5 |
- Optimized weight, high strength: FEA-driven CAD removes excess material while preserving strength for faster handling and installation.
- Low operating torque: Engineered polymers in bushings cut ball friction for easy operation even after years of service.
- Corrosion compatibility: CW617N alloy, with arsenic-free formulation, reduces yellowing and improves chemical resistance in hard-water regions.
- Documented technical support: Datasheets include pressure-drop curves, seat-life graphs, and installation instructions.
Standards, Testing & Traceability
All valves carry laser-etched serial numbers for traceability to production date, shift, and test results. In addition to national certification, Mehshir holds CE for export to Europe and ISIRI 3664 for domestic gas valves. An independent test lab—helium leak testing, salt-spray tanks, and impact-life rigs—provides continuous feedback for design optimization.
Applications
- Building services: Quick branching on water and gas risers, underfloor heating, and fan-coil units.
- Petrochemical & refining: Light liquid fuel control, instrument air lines, and utility services.
- Fire protection & sprinklers: Swing check with brass body and NBR disc for dependable performance at elevated temperature.
- Industrial HVAC: Pump bypass and balancing in chillers, cooling towers, and boilers.
- Low-pressure steam & hot fluids: Threaded PN16 models with graphite packing for long-term resistance up to 180 °C.
Warranty & After-Sales Service
Mehshir offers a 10-year unconditional warranty and a reliable spare-parts network. The technical office provides installation and maintenance training to reduce common errors and lower total cost of ownership (TCO).
Purchasing from “Tamam Baha”
As a distributor of Mahshir, Tamam Baha supplies the full range of brass valves with authenticity assurance. Their technical team supports sizing, pressure class, and sealing selection for each project. Procurement is non-exclusive; customers may source from other qualified channels as needed.
