Kisan (Pars KIS): Forged-Brass Valves You Can Rely On
With nearly four decades in building and light-industry brass valves, Kisan (Pars KIS) is a trusted name among contractors, builders, and end users. The brand’s backbone is premium raw materials, forged manufacturing, and step-by-step quality control—an approach that delivers durable service, tight sealing, and predictable performance on real-world jobs.
History & Background
Founded in 1986, Kisan focused on standard, forged-brass valves and became a key domestic player. From day one the product philosophy was clear: meet Iran National Standards, answer the technical needs of water and heating systems, and offer a dependable range that contractors can specify with confidence. Investments in skilled people, precision machining, controlled brass alloys, and pressure/leak tests shaped a portfolio that many professionals equate with “trust” in gate and quarter-turn brass valves.
Quality & Standards
- Built to Iran National Standards with rigorous in-process QA.
- Incoming alloy verification and dimensional control before assembly.
- Hydrostatic pressure testing and leak testing on each production batch.
- Batch tracking for after-sales traceability.
- Designed to deliver strong value and long service life.
Products & Innovations
Kisan concentrates on two core families:
- Gate/Globe-style brass wheel valves for isolation in water networks and boiler rooms.
- Quarter-turn brass ball valves for fast control with minimal pressure drop at branches and unit connections.
In both families, bodies are primarily forged brass—a choice that increases metal density, strengthens threads, and resists impact and mechanical stress. Precision-machined seats and sealing surfaces, paired with high-grade seals, ensure smooth, stable operation over time.
Size Range & Operating Envelope
- Common sizes: 1/2″ to 3″
- Working pressure (typical): up to 20 bar (model-dependent)
- Working temperature (typical): up to 120 °C
- BSP threaded ends for easy integration with galvanized, multilayer, and similar piping
Key Technical Features
- High-grade forged-brass bodies: corrosion resistance, robust threads, mechanical strength.
- Sturdy handles (often aluminum): light, impact-resistant, comfortable for quick actuation.
- Secure sealing: carefully selected seat and packing materials to prevent leakage and keep torque consistent.
- Project-ready pressure/temperature: up to 20 bar and 120 °C (by model) for common building applications.
- Low pressure drop (especially in ball valves) for flow-sensitive circuits.
Example Technical Table (Typical Values)
| Product Group | Common Sizes | Typical Working Pressure | Typical Working Temp. | End Connection | Body Material | Handle Material | Key Benefit |
|---|---|---|---|---|---|---|---|
| Brass Ball Valve (Quarter-Turn) | 1/2″–2″ | up to 20 bar | up to 120 °C | BSP threaded | Forged brass | Aluminum / coated steel | Fast shut-off, very low ΔP |
| Brass Gate Valve | 3/4″–3″ | 16–20 bar | up to 120 °C | BSP threaded | Forged brass | Cast iron / aluminum (by model) | Reliable isolation for main lines |
Applications
- Urban/building water & wastewater systems: isolation of branches and risers.
- Heating & boiler rooms: radiators, boilers, manifolds, return loops.
- Light industrial water networks: service lines, washdown, non-corrosive processes.
- Low-pressure gas and steam (per model specs and applicable regulations).
- Distribution of non-corrosive fuels within rated limits.
Gate vs. Ball: Practical Comparison
| Criterion | Brass Gate Valve | Brass Ball Valve (Quarter-Turn) |
|---|---|---|
| Mechanism | Linear travel (stem up/down) | 90° ball rotation |
| Actuation speed | Moderate | Very fast |
| Pressure drop | Moderate | Very low |
| Shut-off quality | Good for isolation | Excellent for quick on/off |
| Maintenance | Packing/stem serviceable | Typically low maintenance |
| Recommended use | Main lines & risers | Branches, units, fast-response circuits |
Pro Selection Guide
- Fluid & water quality: Forged brass offers an excellent durability balance for municipal water; verify compatibility for special media.
- Pressure & temperature: Match circuit conditions to the valve’s PN/temperature rating; allow safety margins for expected peaks.
- Nominal size & threads: Align with existing piping (BSPP/BSPT as specified).
- Performance priority: Choose ball valves for quick actuation and minimal ΔP; choose gate for primary isolation.
- Installation environment: Consider humidity/corrosion and potential handle impacts (choose lever or guarded handle accordingly).
Installation & Operation Notes
- Use suitable thread sealant and avoid over-torquing to protect threads.
- Apply wrench on the wrench flats—not on the handle.
- Perform a leak test after installation; inspect joints during the first week of service.
- In hard-water areas, plan periodic descaling to keep operating torque consistent.
- Avoid water hammer; do not snap valves open/closed under high pressure.
Durability, Maintenance & Lifecycle Performance
- Forged bodies and precision-machined seats reduce scaling and help seals last longer.
- Periodic stem lubrication (on serviceable models) keeps torque smooth.
- Replace sealing elements proactively to prevent secondary damage.
- Install strainers ahead of sensitive equipment to extend system life.
Authenticity & Safe Sourcing
- Clear brand marks and codes on body/handle; uniform machining; weight appropriate to size.
- Quality packing/seals; smooth travel with no sticking through the stroke.
- Intact packaging with size/pressure/batch labels.
- Purchase through reputable distributors to ensure support and traceability.
Why Kisan Is a Safe Choice
- Proven durability in buildings and light industry.
- Straightforward installation with standard BSP threads and solid wrench flats.
- Serviceable designs and accessible spares on relevant models.
- Scalable production and coverage of popular size ranges.
Notes for Contractors, Supervisors & Owners
- Specify valve type, size, PN, temperature, and thread standard in project documents.
- In RFP/BOQ, require forged brass, pressure testing, and delivery with test certificates.
- Inspect pilot samples before bulk orders.
- For boiler rooms, design layouts for easy access to isolation valves to speed up routine service.
