Kizz Iran — Brass Valves You Can Trust
Kizz Iran is one of the oldest names in Iran’s MEP sector for brass valves. Since 1984, the brand has grown from launching its first brass gate-valve line into a leading maker of building and HVAC valves—covering design, manufacturing, and testing. Careful alloy selection, precise machining, and step-by-step quality control make Kizz Iran a safe, efficient choice for residential, commercial, and light-industrial systems.
History & Manufacturing Capabilities
Born in the 1980s to localize brass valves, Kizz Iran expanded forging and casting, added CNC machining halls, set up hydrostatic and seat-leak test units, and implemented a quality management system. The result is a broad portfolio—gate, check (swing & spring), ball, needle/globe, gas valves, and Y-strainers—each supplied with defined codes and size ranges. A process-driven approach—from incoming material control to final test—keeps performance consistent and boosts reliability throughout service life.
Product Portfolio
- Gate Valve
The classic isolation solution for water networks, fire lines, and HVAC circuits. Benefits: very low pressure drop when fully open, serviceable design, and easy position locking. Best for clean or slightly contaminated flows. - Check Valve
Swing: for larger diameters and higher flow; moderate pressure drop.
Spring/Non-return: compact body, fast closure, lower drop in small to medium sizes.
Use case: prevents backflow in pumps, risers, and distribution lines. - Ball Valve
The engineer’s favorite for quick isolation. Excellent sealing with polymer seats (typically PTFE), low torque, and long life. Widely used on water, town gas, compressed air, and light oils. - Needle/Globe Valve
For proportional control, circuit balancing, and fine adjustment. Internal needle design enables gradual, stable flow regulation. - Gas Valves
Built for town and LPG lines with stringent tightness requirements. Proper alloys, multi-barrier sealing, and tight dimensional control enhance network safety. - Angle Valves & Accessories (Service Valves)
Hygienic, quick-install solutions at points of use (basins, sinks, flush tanks, etc.). Internal screening and reliable sealing protect downstream fixtures. - Y-Strainer
Installed upstream of control valves, pumps, and sensitive equipment to capture debris before it reaches them. Cleanable baskets and proper mesh selection reduce wear and secondary leakage.
Key Technical Notes & Working Ranges
In brass valves, alloy grade, sealing surface finish, seat material, and thread accuracy determine durability and tightness. Working pressure and temperature vary by product code. The table below reflects common market ranges for quick orientation (always check the exact model datasheet for final selection):
| Product Type | Common Sizes (in) | Connection | Typical Working Pressure (Bar) | Approx. Working Temperature (°C) | Compatible Fluids |
|---|---|---|---|---|---|
| Brass Gate Valve | ½ to 4 | Threaded (BSP/NPT) | 16–20 | −10 to +110 | Water, compressed air |
| Swing Check Valve | ½ to 4 | Threaded | 16–25 | −10 to +110 | Water, light oil |
| Spring Check Valve | ½ to 2 | Threaded | 16–25 | −10 to +110 | Water, air |
| Ball Valve | ¼ to 2 (larger in some codes) | Threaded | 25–40 | −20 to +120 | Water, town gas, air |
| Needle/Globe Valve | ¼ to 1¼ | Threaded | 16–25 | −10 to +110 | Hot water, low-pressure steam |
| Gas Valve | ½ to 1¼ | Threaded | 10–25 | −20 to +60 | Town & LPG gas |
| Y-Strainer | ½ to 2 (and above) | Threaded | 16–25 | −10 to +110 | Water, air |
Note: Values are indicative. Actual limits depend on model, seat, alloy, and test standard.
Standards & Quality Assurance
A quality management system aligned with ISO 9001:2015 supports controlled processes and full traceability. Hydrostatic and seat-leak tests are performed on calibrated rigs with documented results for in-process and final inspection. Kizz Iran holds the Iran National Standard Mark for relevant product groups alongside industry recognitions—evidence of disciplined production and proven reliability.
Where It Fits Best
- Domestic cold & hot water: reliable isolation with ball/gate valves; check valves for backflow prevention; Y-strainers to protect control valves.
- HVAC heating & cooling: circuit control, equipment isolation, and water-hammer mitigation through correct valve choice and piping layout.
- Booster sets & plant rooms: spring check after pumps, quick-shut isolation on bypasses, and strainers to shield pumps from debris.
- Building gas networks: gas valves with high tightness; threaded joints assembled to standard practice.
- Light industry: light oils and compressed air—verify temperature limits and seat compatibility.
Engineering Selection Guide
Selection is more than nominal size. Follow five steps to reduce operational risk:
- Define fluid, temperature, and pressure with a reasonable safety margin.
- Match valve type to duty: quick isolation (ball), low drop when fully open (gate), backflow prevention (check), flow regulation (needle/globe).
- Confirm threads & standards: ensure BSP/NPT compatibility across components; use adapters only if necessary.
- Seat & sealing: check seat material (e.g., PTFE) for higher temperatures or specific fluids.
- Serviceability & access: plan space, orientation, and add strainers before sensitive equipment.
Quick Selection by Scenario
| Application Scenario | Recommended Product | Key Advantage | Installation Note |
|---|---|---|---|
| Apartment inlet | ½″ or ¾″ threaded ball valve | Fast shut-off, excellent sealing | Use PTFE tape; avoid over-tightening |
| Booster pump outlet | Spring check + ball valve | Backflow prevention + easy service | Keep away from elbows to reduce turbulence |
| Fire-riser line | Brass gate valve (proper rating) | Low drop when fully open | Perform hydrostatic pressure test after installation |
| Hot-water return | Swing check | Suited to higher flows | Follow flow arrow; verify free disc motion |
| Wall-hung boiler inlet | Filtered angle valve + ball valve | Debris capture + easy isolation | Clean filter basket periodically |
| Internal gas branch | Standard gas valve | Safety and tightness | Leak-test with approved methods (soap solution/test gas) |
| Upstream of control valve | Y-strainer | Protects seats | Select mesh for local water quality |
Installation, Commissioning & Maintenance
- Thread prep: clean, burr-free threads; use PTFE tape or compatible sealant.
- No over-torque: excessive force leads to micro-cracks and late leaks; use proper wrenches on hex flats.
- Alignment & support: do not load the valve body with pipe weight; add hangers/supports.
- Flow direction & orientation: follow arrows on check valves; mount Y-strainers for proper basket seating and drainage.
- Post-install test: pressure test per project spec; cycle open/close to confirm smooth operation.
- Routine service: inspect seals, lubricate where permitted, clean strainer baskets, and verify check-valve function—especially after network works.
Authenticity & Safe Purchasing
- Body markings: brand, size, flow direction (where applicable), and batch/code must be clear.
- Surface & weight: uniform forging/casting without visible porosity; weight appropriate to size.
- Packaging & QC card: intact box with product ID.
- Thread & seal fit: trial on a reference nipple to verify pitch and form.
- After-sales network: spare-part access, repairability, and responsive warranty reduce downtime.
Operational Value & Lifecycle Returns
High-grade valves cut leakage, protect downstream equipment, reduce unplanned stops, and improve energy performance over the system’s life. Where access is difficult—above ceilings or in compact plant rooms—robust bodies, reliable seats, and manufacturer support deliver rapid payback in reliability and uptime.
System Integration
Coordinate valves with pipes (PEX, multilayer, copper, galvanized), fittings, and controls. Match thread standards, avoid galvanic corrosion across dissimilar metals, plan isolation points for service, and place strainers and checks thoughtfully to enhance overall performance.
Brass Engineering Excellence
Hot forging increases structural density and strength versus casting. Precision-machined sealing surfaces, plated balls in ball valves, and wear-resistant seats enable long-term tightness. Factory hydrostatic body tests and seat-leak tests before shipment minimize failures on site.
Recognition & Market Trust
Adoption across national and private projects reflects years of steady quality and product development. Certifications and industry awards, plus a countrywide sales and service presence, help consultants and contractors choose with confidence.
Authorized Availability
As an authorized seller, Tamam Baha provides access to Kizz Iran’s full range by code and size, with authenticity assurance and pre-sale technical guidance for fit-for-purpose selection. The brand is also available through reputable distributors nationwide. Tamam Baha focuses on timely supply, technical support, and accurate product information so project teams can buy with confidence.
