Single Piece Screwed Ball Valve | Brass CS SS304 SS316 | BSP NPT | Class 150 to Class 800# | DN8–DN100 | Water Air Oil Chemical | KELOR India

Description

Single Piece Screwed End Ball Valve | Brass / CS ASTM A105 / SS304 / SS316 | BSP / NPT | Class 150 to Class 800# | DN8–DN100 | Water / Air / Steam / Oil / Chemical | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Body: Brass / CS A105 / SS304 / SS316
Thread: BSP / NPT | Sizes: DN8–DN100 | Pressure: PN20 to Class 800#

Single Piece Screwed End Ball Valve Supplier in India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, is a B2B supplier of Single Piece Screwed End Ball Valves — Brass (IS 319 / CW617N dezincification resistant) / Carbon Steel (ASTM A105 forged) / SS304 (CF8) / SS316 (CF8M) body — SS316 ball — virgin PTFE seat — SS316 blow-out proof stem — BSP taper (IS 554) and NPT (ASME B1.20.1) thread — PN20 / PN40 (brass) / Class 600# / Class 800# (CS and SS forged) — DN8 (¼”) to DN100 (4″) — full bore — API 598 tested — GST invoice — MOQ 10 Nos — Pan India dispatch from Ahmedabad.

The single piece screwed end ball valve is the highest volume small bore isolation valve in the Indian market — specified for water supply, HVAC, compressed air, steam, oil transfer, chemical plant utility, pharmaceutical, and food processing screwed piping connections where compact design, bubble-tight shut-off, and fast quarter-turn operation are required at the lowest installed cost.

1-Piece vs 2-Piece vs 3-Piece Body — Which to Specify

Body construction is the first design decision for any screwed ball valve. Each body type has a specific cost, maintenance, and application profile — specifying the wrong type results in either overspending on maintenance features that are not used, or under-specifying for applications where in-line seat replacement is needed.

Body Material Selection Guide

BSP vs NPT Thread — Specify Correctly

BSP (British Standard Pipe Taper — BSPT) per IS 554 / BS 21 is the standard thread for all Indian-manufactured valves, fittings, and equipment. All piping in Indian industrial plants, buildings, and infrastructure uses BSP thread unless the project specifically follows US codes (ASME piping) or uses US-origin equipment. Specify BSP for all standard Indian industrial and plumbing applications.

NPT (National Pipe Taper) per ASME B1.20.1 is the American standard — specified on oil and gas projects following ASME codes, US-origin equipment nozzles, imported instrumentation, and international EPC projects using American design basis. BSP and NPT threads are not interchangeable — different thread form and angle — attempting to mate BSP male into NPT female or vice versa damages both threads and creates a leak point. Identify the thread standard of the connected equipment before ordering.

Technical Specifications

Applications in Indian Industries

• Plumbing and building services — brass BSP PN20 DN15–DN50 — potable water supply isolation, hot and cold water lines in commercial buildings, hospitals, hotels — quarter-turn lever for easy operation — most widely replaced screwed ball valve in Indian plumbing maintenance — fast movement product for hardware traders and plumbing suppliers
• HVAC — chilled water and hot water systems — brass PN20/PN40 DN15–DN50 — chilled water coil isolation, fan coil unit isolation valves, cooling tower makeup water lines, condenser water screwed connections — full bore for minimum pressure drop in HVAC circuits — standard for Indian MEP contractors
• Compressed air systems — brass PN40 or CS A105 Class 600# DN15–DN50 — compressor outlet isolation, air receiver drain valves, air line branch isolation — brass PN40 for standard air pressure up to 40 bar — CS A105 Class 600# for higher pressure air where brass is insufficient
• Steam utility — process and building — CS ASTM A105 Class 600# DN15–DN50 — steam trap isolation, steam line drain valves, steam trap bypass — graphite packing for high temperature — brass is NOT suitable for steam above 120°C — specify CS A105 screwed ball valve for all steam service
• Chemical plant utility — Ankleshwar, Vapi, Dahej — SS316 Class 600# DN15–DN50 — screwed utility connections on chemical plant — instrument air, nitrogen, cooling water connections on chemical equipment — where CS corrodes internally and brass is attacked by process chemicals — SS316 standard for all utility screwed connections on Indian chemical plant where media or environment is corrosive
• Pharmaceutical — API plants, formulation — SS316 Class 600# DN15–DN50 — GMP utility piping screwed connections — purified water (PW) and water for injection (WFI) utility branches — nitrogen and compressed air utility on process equipment — SS316 with PTFE seat meets Indian GMP and US FDA utility piping requirements for non-product-contact utility connections
• Food and beverage processing — SS316 Class 600# DN15–DN50 — cooling water utility, CIP return line screwed connections, steam utility, compressed air — where hygienic material is required at utility connections even though product does not contact the valve — standard for Indian food plant utility screwed valves per FSSC 22000 requirements

Related Products — Krishna Industries (KELOR)

• 2-Piece Ball Valve — two-piece body — screwed / flanged — DN15–DN200 — for applications where occasional seat inspection is needed and budget allows two-piece premium over one-piece
• Three Piece Ball Valve (Cast Body) — 3-piece cast body — Class 150/300 — for larger bore screwed or flanged applications with in-line maintenance requirement
• Forged 3-Piece Ball Valve — Class 800# — ASTM A105 forged body — SW / BW / flanged — DN15–DN150 — for high pressure permanent weld connections where 3-piece maintenance advantage over rewelding is required
• SS Ball Valve — SS304 / SS316 — broader SS ball valve range including flanged and actuated options
• Y Strainer — install upstream of screwed ball valve on chemical dosing, instrument connections, or equipment supply lines — removes particles that erode PTFE seat and score ball surface

Frequently Asked Questions

1. What is the difference between 1-piece and 2-piece screwed ball valve and which should I specify?

A 1-piece body ball valve is machined from a single piece of metal — no body joints, no body bolts. A 2-piece body has the body in two halves bolted together with a body joint gasket. The 1-piece body has fewer potential leak paths and is the lower cost option — correct for screwed utility service where the valve will be replaced entirely if the seat wears, rather than maintained in line. A 2-piece body allows partial access to the ball and seats from one end by removing the end piece — useful when occasional seat inspection is planned without removing the valve. For most Indian screwed utility applications — water, air, HVAC, general industrial — the 1-piece body is the correct and most economical specification. The 2-piece premium is justified only where in-line seat access is specifically required.

2. Can I use a brass screwed ball valve on steam lines?

No — brass ball valves are not suitable for steam service. Brass loses mechanical strength rapidly above 120°C and the PTFE seat softens and deforms under steam conditions, causing seat leakage and valve failure. For all steam line screwed ball valves — steam trap isolation, steam line drain, steam trap bypass, steam utility isolation — specify Carbon Steel ASTM A105 forged body with graphite packing and PTFE seat, or upgrade to graphite seat for very high temperature steam. CS A105 Class 600# is the correct specification for screwed ball valves on steam lines in Indian process plant and building services steam systems.

3. What is dezincification resistant brass and when is it important?

Standard brass (CW614N) is a copper-zinc alloy. In certain water conditions — soft water, slightly acidic water, hot water above 60°C — the zinc selectively leaches out of the brass in a process called dezincification, leaving a weak porous copper structure that crumbles. Dezincification resistant brass (CW617N) has a small addition (typically 0.02–0.04% arsenic) that inhibits zinc leaching — the alloy maintains its mechanical properties in conditions that would dezincify standard brass. Specify dezincification resistant brass (CW617N / IS 319 DR) for: hot water systems above 60°C, soft water or slightly acidic water supply, coastal areas with aggressive water chemistry, and any application where standard brass fittings have failed prematurely with white powdery deposits at the failure point.

4. What thread sealant should be used with screwed ball valves?

For BSP taper threads: PTFE thread seal tape (2–3 wraps, applied in the direction of the thread) is the standard sealant for water, air, and general utility service — available from any hardware supplier in India. For higher pressure and temperature service (steam, high pressure air, oil): anaerobic thread sealant (Loctite 577 or equivalent) provides stronger and more reliable sealing than PTFE tape and is resistant to vibration loosening. For food and pharmaceutical service: use only food-grade PTFE tape or food-grade thread sealant compliant with relevant regulations — avoid standard anaerobic sealants which may not be food-safe. Never use pipe dope (paste sealant) on stainless steel threads — some paste sealants contain chlorides that cause stress corrosion cracking in SS threads.

5. What is the MOQ?

MOQ is 10 Nos. Bulk supply orders — 50 to 10,000+ Nos for traders, OEM manufacturers, and plant maintenance blanket orders — with API 598 test certificate, GST invoice, and size-wise packing list. WhatsApp body material, thread type (BSP/NPT), size list, pressure class, and quantity for bulk pricing within 2 hours.

Conclusion

Krishna Industries (KELOR) supplies Single Piece Screwed End Ball Valves for Indian plumbing, HVAC, compressed air, steam, oil, chemical plant utility, pharmaceutical, and food processing applications — Brass (IS 319 / CW617N dezincification resistant) / Carbon Steel (ASTM A105 forged) / SS304 (CF8) / SS316 (CF8M) body — SS316 ball — virgin PTFE seat — BSP taper (IS 554) and NPT (ASME B1.20.1) thread — PN20 / PN40 (brass) / Class 600# / Class 800# (CS and SS forged) — DN8 (¼”) to DN100 (4″) — API 598 tested — GST invoice — Pan India dispatch from Ahmedabad. WhatsApp body material, thread type, size list, and quantity for bulk pricing within 2 hours.