Brass Y Strainer Supplier India | BSP NPT Threaded | DN8–DN80 | SS304 Brass Mesh | Water HVAC Air Steam Utility | PN16 | KELOR Ahmedabad

Description

Brass Y Strainer Supplier India | Dezincification Resistant Brass Body | BSP / NPT Threaded | SS304 & Brass Mesh | DN8–DN80 | PN16 | Water / HVAC / Air / Steam / Diesel | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Body: Dezincification Resistant Brass (CW617N / IS 319)
Thread: BSP / NPT | Sizes: DN8–DN80 | Mesh: SS304 / Brass

Brass Y Strainer Supplier in India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, supplies Brass Y Strainers — dezincification resistant brass body (CW617N / IS 319) — removable SS304 wire mesh screen (standard 40 mesh) or brass mesh screen — BSP taper thread (IS 554) and NPT (ASME B1.20.1) — PN16 — DN8 (¼”) to DN80 (3″) — mesh sizes: 20 mesh (coarse), 40 mesh (standard), 80–100 mesh (fine) — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

A brass Y strainer is installed upstream of pumps, pressure reducing valves (PRVs), control valves, flow meters, and solenoid valves to trap solid particles — sand, rust, scale, welding slag — before they reach and damage sensitive downstream equipment. Furthermore, the Y-shaped body allows the strainer screen to be accessed and cleaned without removing the valve from the pipeline. Consequently, maintenance time is reduced to 5–10 minutes per cleaning cycle without pipeline disruption.

Brass vs CS vs SS Y Strainer — Which Body to Specify

For CS and SS flanged Y strainers for industrial process plant service, see the Y Strainer — Industrial CS and SS page.

Dezincification Resistant Brass — Why It Matters

Standard brass (CW614N) is a copper-zinc alloy. In certain water conditions — soft water, slightly acidic water, or hot water above 60°C — the zinc selectively leaches from the brass surface. This process is called dezincification. It leaves a weak porous copper structure that crumbles and fails. The failure appears as white powdery deposits at the failure point.

Dezincification resistant brass (CW617N / IS 319 DR) contains a small addition of arsenic (0.02–0.04%) that inhibits zinc leaching. As a result, the alloy maintains its mechanical properties in conditions that would dezincify standard brass.

Specify dezincification resistant brass for: hot water systems above 60°C, soft water or slightly acidic water supply, coastal areas with aggressive water chemistry, and any installation where standard brass fittings have failed prematurely with white powdery deposits.

Mesh Size Selection Guide

Correct Installation — Pocket Down Is Mandatory

The most common installation error with Y strainers on Indian construction sites is incorrect orientation. The strainer pocket — the leg of the Y that holds the mesh basket — must point downward or at a downward angle. Gravity then helps particles settle into the bottom of the pocket. As a result, the basket fills from the bottom and the maximum screen area remains active for longer before cleaning is needed.

If the pocket faces upward, particles cannot settle. Instead, they float back into the flow stream and continue cycling through the screen. The basket clogs rapidly near the top. Furthermore, when the end cap is opened for cleaning, trapped debris spills back into the pipeline.

Site instruction: Mark “POCKET DOWN” on the strainer body with a paint marker before dispatch for site installation. Additionally, mark the flow direction arrow. These two markings prevent the most common installation errors on Indian construction sites.

Technical Specifications

Applications in Indian Industries

HVAC — Chilled Water and Hot Water Systems

DN15–DN50 BSP 40 mesh — upstream of chilled water coil connections, fan coil unit supply valves, cooling tower spray nozzles, PRVs on hot water systems. Furthermore, protects control valves and balancing valves from scale and pipe debris in new HVAC installations. Standard specification for Indian MEP contractors on commercial building HVAC projects.

Water Supply and Plumbing

DN15–DN50 BSP 40 mesh — upstream of water meters, solenoid valves, pressure reducing valves, and water treatment equipment in residential buildings, hospitals, hotels, and commercial buildings. Moreover, protects overhead tank float valves from sand and debris in Indian municipal water supply systems where water quality varies significantly.

Compressed Air Systems

DN15–DN50 BSP 40 mesh — upstream of pneumatic tools, solenoid valves, air cylinders, and spray guns on factory compressed air lines. In addition, installed downstream of air compressor outlet to protect downstream equipment from compressor scale and particulates. Brass body resists oil-contaminated compressed air better than cast iron.

Steam Utility — Building Services and Industrial

DN15–DN50 BSP 40 mesh with fibre gasket — upstream of steam traps, steam control valves, and steam-using equipment in building services and light industrial steam systems. DR brass body handles steam to 150°C. Therefore, specify fibre gasket (not rubber) for steam service to prevent gasket degradation at elevated temperature.

Diesel and Fuel Oil Lines

DN15–DN25 BSP 40 mesh — upstream of diesel generator fuel filters, burner fuel control valves, and fuel metering equipment. Brass resists diesel and light fuel oil attack. Consequently, it is the standard body material for fuel line strainers on Indian DG sets and oil burner systems.

Irrigation and Agricultural Pipelines

DN25–DN80 BSP 20 mesh (coarse) — upstream of drip irrigation emitters, sprinkler heads, and fertigation injectors. Coarse mesh for raw water from bore wells and open channels with high sand and debris loading. DR brass resists aggressive bore well water chemistry common in Indian agricultural areas.

Related Products — Krishna Industries (KELOR)

• Y Strainer — CS and SS Industrial (Flanged) — cast CS / SS316 body — flanged — DN15–DN200 — for process plant piping, chemical, pharma, and high pressure industrial service where brass is not suitable
• Duplex Strainer — dual chamber continuous operation — for critical service where Y strainer shutdown for cleaning is not acceptable
• Single Piece Screwed Ball Valve — Brass — brass body BSP ball valve — install downstream of brass Y strainer as isolation valve for system shutdown and screen cleaning
• Globe Valve — install downstream of Y strainer on water and steam lines for flow control — Y strainer protects globe valve seat from particulate damage
• Single Plate Wafer Check Valve — install on pump discharge in the same water supply and HVAC systems where brass Y strainer protects pump suction

Frequently Asked Questions

1. What is the difference between a brass Y strainer and an industrial CS/SS Y strainer?

A brass Y strainer has a threaded BSP/NPT connection and is designed for DN8–DN80 plumbing, HVAC, water supply, and light industrial service. It is the correct and most economical choice for water, air, steam (to 150°C), and diesel in standard building and utility piping. An industrial CS or SS Y strainer has flanged connections and is designed for DN15–DN200 process plant piping at higher pressures and temperatures — steam, oil, gas, and chemical process lines. Specify brass for building services and light industrial screwed connections; specify CS or SS flanged for process plant piping.

2. Which mesh size should I specify for HVAC chilled water service?

Specify 40 mesh (400 micron) for standard HVAC chilled water and hot water service. This mesh size is fine enough to protect control valves, balancing valves, and coil connections from scale and debris while maintaining acceptable pressure drop. For new HVAC installations with clean pipe systems, 40 mesh may need cleaning only once or twice in the first year after flushing. For systems with old pipework and heavy scale loading, 20 mesh (coarser) prevents rapid clogging while still protecting from the largest particles that cause valve seat damage.

3. Can I install a brass Y strainer on steam lines?

Yes — brass Y strainers are suitable for steam service up to 150°C at PN16 pressure rating. However, specify a fibre or PTFE gasket on the end cap instead of the standard rubber gasket — rubber gaskets degrade rapidly at steam temperatures and cause end cap leakage. DR brass body is essential for steam service as it prevents dezincification in the condensate-steam environment. For steam above 150°C or above PN16 pressure, specify a carbon steel or SS flanged Y strainer instead.

4. Why is my Y strainer clogging rapidly after installation?

Rapid clogging within days or weeks of installation has three common causes. First, the mesh is too fine for the particle loading in the water — specify coarser 20 mesh for dirty raw water or bore well water. Second, the strainer is installed with the pocket pointing up — particles cannot settle into the pocket and immediately recoat the screen — reinstall with pocket down. Third, the pipeline was not flushed before commissioning — new pipelines contain welding slag, pipe scale, and rust that loads the strainer rapidly in the first few weeks — plan for more frequent cleaning in the first month after commissioning, then the cleaning frequency reduces significantly.

5. What is the MOQ?

MOQ is 10 Nos. Bulk supply for HVAC contractors, plumbing traders, hardware distributors, and OEM equipment manufacturers — 50 to 5,000+ Nos — with GST invoice and size-wise packing list. WhatsApp thread type (BSP/NPT), size list, mesh size, and quantity for bulk pricing within 2 hours.

Conclusion

Krishna Industries (KELOR) supplies Brass Y Strainers for water supply, HVAC, compressed air, steam utility, diesel fuel, and irrigation applications across India — dezincification resistant brass body (CW617N / IS 319 DR) — SS304 wire mesh (standard 40 mesh) or brass mesh screen — BSP taper (IS 554) and NPT (ASME B1.20.1) thread — PN16 — DN8 (¼”) to DN80 (3″) — 20 mesh (coarse) / 40 mesh (standard) / 80–100 mesh (fine) — GST invoice — Pan India dispatch from Ahmedabad. WhatsApp thread type, size list, mesh size, and quantity for bulk pricing within 2 hours.