Description
ISI-Certified 25mm Ball Valve (IS 9890)
Overview
The ISI-Certified 25mm Ball Valve is a precision-engineered, general-purpose flow control device designed for reliable on/off operation in water, air, oil, and other fluid systems. Bearing the prestigious ISI Mark — a certification from the Bureau of Indian Standards (BIS) — this valve conforms to IS 9890:1981 (Specification for General Purpose Ball Valves) , ensuring quality, safety, and performance you can trust.
A ball valve is a quarter-turn valve that uses a spherical disc (the ball) with a cylindrical bore to control flow. When the handle is turned 90 degrees, the bore aligns with the pipeline, allowing full flow; when turned back, the bore is perpendicular, completely shutting off flow. This simple yet effective mechanism provides reliable shut-off with minimal pressure drop and long service life.
Available in multiple materials including Brass, Gun Metal, Cast Iron, and Stainless Steel, with either Full Bore or Standard Bore construction, the ISI-Certified 25mm Ball Valve offers the durability and performance you need for plumbing, water supply, industrial processing, and fire-fighting applications.
Key Features
| Feature | Description |
|---|---|
| ISI Mark Certified | Bearing the prestigious ISI Mark, this valve conforms to IS 9890:1981 — the Indian Standard for General Purpose Ball Valves, ensuring quality and safety |
| Quarter-Turn Operation | Simple 90° rotation provides quick, reliable on/off control with visual position indication |
| Full Bore Design | Full bore construction ensures minimal pressure drop and unrestricted flow |
| Durable Construction | Available in Brass, Gun Metal, Cast Iron, or Stainless Steel for long service life and corrosion resistance |
| PTFE Seats & Seals | Low-friction PTFE seats provide tight shut-off, chemical resistance, and extended service life |
| Two-Piece or Three-Piece Body | Available in one-piece, two-piece, or three-piece construction for ease of maintenance |
| Screwed or Flanged Ends | Available with screwed (BSP/NPT) or flanged end connections to suit any installation |
| Blow-Out Proof Stem | Engineered stem design prevents accidental blow-out under pressure |
| Anti-Static Device | Optional anti-static feature for applications involving flammable fluids |
| Fire-Safe Design | Optional fire-safe construction for critical applications |
| Low Torque Operation | Precision-machined ball and PTFE seats ensure smooth, low-torque operation |
| Wide Temperature Range | Suitable for temperatures from -20°C to +120°C (depending on material and seat selection) |
Technical Specifications
| Parameter | Specification |
|---|---|
| Standard | IS 9890:1981 (General Purpose Ball Valves) |
| Certification | ISI Mark (Bureau of Indian Standards) |
| Valve Size | 25mm (1 inch) |
| Bore Type | Full Bore / Standard Bore |
| Body Construction | One-Piece / Two-Piece / Three-Piece |
| Body Material | Brass / Gun Metal / Cast Iron / Stainless Steel |
| Ball Material | Brass / Stainless Steel |
| Stem Material | Brass / Stainless Steel |
| Seat Material | PTFE / Reinforced PTFE |
| Seal Material | PTFE / EPDM / Viton / Nitrile |
| End Connection | Screwed (BSP / NPT) / Flanged |
| Pressure Rating | Class 125 / Class 150 / Class 250 / Class 300 |
| Operating Temperature | -20°C to +120°C (depending on materials) |
| Operation | Lever Handle / Gear Operated |
| Handle Type | Lever / Handwheel |
| Handle Material | Steel / Malleable Iron |
| Anti-Static | Optional |
| Fire-Safe | Optional |
| Country of Origin | Made in India |
Available Variants
| Variant | Description |
|---|---|
| Brass Ball Valve | Economical and corrosion-resistant, ideal for water, air, and oil applications |
| Gun Metal Ball Valve | High-strength copper alloy for demanding applications |
| Cast Iron Ball Valve | Heavy-duty construction for industrial applications |
| Stainless Steel Ball Valve | Superior corrosion resistance for aggressive media and sanitary applications |
| Full Bore Ball Valve | Unrestricted flow with minimal pressure drop |
| Standard Bore Ball Valve | Reduced bore for cost-effective applications |
| Screwed End Ball Valve | Female BSP/NPT threads for easy installation |
| Flanged End Ball Valve | Flanged connections for heavy-duty and high-pressure applications |
Why Choose ISI-Certified 25mm Ball Valve?
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ISI Mark Certified — Bearing the prestigious ISI Mark from the Bureau of Indian Standards (BIS) , this valve is manufactured in compliance with IS 9890:1981, the Indian Standard for General Purpose Ball Valves. This certification ensures that the product meets stringent quality, safety, and performance requirements
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Superior Material Quality — Constructed from high-quality materials including Brass, Gun Metal, Cast Iron, and Stainless Steel, offering excellent corrosion resistance and long service life
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Full Bore Design — Full bore construction ensures minimal pressure drop and unrestricted flow, maximising system efficiency
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Reliable Shut-Off — PTFE seats provide tight shut-off with zero leakage, ensuring system integrity
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Easy Operation — Quarter-turn operation with visual position indication simplifies manual control
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Low Maintenance — Simple design with minimal moving parts ensures long-term reliability with minimal maintenance
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Versatile Applications — Suitable for water, air, oil, gas, and a wide range of industrial fluids
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Multiple Connection Options — Available with screwed (BSP/NPT) or flanged ends to suit any installation requirement
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Trusted by Authorities — Widely accepted by Municipal Corporations, Water Supply Authorities, Industrial Users, and Government Departments
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Made in India — Proudly manufactured in India to the highest quality standards
Ideal Applications
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Plumbing Systems — Residential, commercial, and industrial water supply and distribution
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Water Supply Networks — Municipal water distribution and pipeline systems
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Fire Fighting Systems — Fire hydrant and sprinkler systems
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HVAC Systems — Heating, ventilation, and air conditioning applications
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Industrial Processing — Chemical, petrochemical, and pharmaceutical processing
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Oil & Gas — Oil, gas, and petrochemical pipelines
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Air Compressed Systems — Compressed air distribution
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Irrigation Systems — Agricultural water supply and sprinkler systems
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Marine Applications — Shipboard piping systems
Compliance & Standards
| Standard | Description |
|---|---|
| IS 9890:1981 | Specification for General Purpose Ball Valves |
| IS 778 | Copper Alloy Gate, Globe and Check Valves for Waterworks Purposes |
| IS 318 | Specification for Gun Metal (for gun metal variants) |
| IS 554 | Specification for Pipe Threads (for screwed end variants) |
| ISI Mark | Bureau of Indian Standards certification mark |
For detailed product inquiries, technical specifications, bulk order pricing, or to place an order, please contact our sales team.







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