WCB Strainer Flanged | Y Type T Type | Class 150 300 | SS Screen | Steam Chemical | Supplier India

Description

WCB Strainer Flanged Supplier India | Y Type & T Type | Class 150/300 | SS304/SS316 Screen | KELOR

Supplier: Krishna Industries (KELOR) – Ahmedabad, Gujarat, India
Established: 2017 | GSTIN: 24AKLPP6499B1ZT | IEC: AKLPP6499B
MOQ: 10 Nos | Body: ASTM A216 WCB | Standard: ASME B16.34 / ASME B16.10
Sizes: ½” to 12″ (15 NB to 300 NB) | Rating: Class 150 / Class 300

WCB Strainer Flanged Supplier in India

Krishna Industries (KELOR), based in Ahmedabad, Gujarat, is a B2B supplier of WCB Strainer Flanged — Y type and T type / basket — ASTM A216 WCB cast carbon steel body — SS304 and SS316 perforated screen — ANSI Class 150 and Class 300 — sizes ½” to 12″ (15 NB to 300 NB) — 20 mesh to 100 mesh — blow-off connection — ASME B16.34 design standard — ASME B16.10 face-to-face — ASME B16.5 flanged ends — hydrostatic tested before dispatch — GST invoice — MOQ 10 Nos — fast Pan India dispatch from Ahmedabad.

WCB flanged strainers are installed upstream of control valves, globe valves, steam traps, flow meters, pressure reducing valves, pneumatic actuator inlet ports, and pump suction lines to remove weld slag, pipe scale, rust particles, and solid debris from process pipelines. The WCB (ASTM A216 Grade WCB) body is the industry standard for high-pressure and high-temperature steam, thermic fluid, oil and gas, and process chemical service in Indian power plants, refineries, chemical plants, pharmaceutical plants, and EPC projects.

Y Type vs T Type vs Duplex — Which Strainer to Specify

Standard specification for most Indian projects: Y type WCB strainer flanged Class 150 with SS304 40-mesh screen — covers steam, compressed air, water, thermic fluid, and general process service in the ½” to 6″ range.

Mesh / Screen Size Selection Guide

Default if not specified: 40 mesh SS304 screen — correct for the vast majority of Indian plant service. Specify finer mesh only when the downstream equipment requires it and the upstream pipe condition justifies it — finer mesh means faster screen fouling and more frequent cleaning.

Pressure-Temperature Ratings — WCB Flanged

Source: ASME B16.34 — WCB material group. For steam service above 370°C, verify creep considerations with supplier. Class 150 is sufficient for most Indian process plant steam service (typically 7 to 15 bar). Class 300 is specified for high-pressure steam lines, boiler headers, and thermic fluid systems above 20 bar.

Technical Specifications

Body Material Comparison — WCB vs CI vs SS

Installation Guide

Y Type Strainer — Horizontal pipeline: Install with screen pocket pointing DOWNWARD (6 o’clock position). This ensures collected debris falls into the screen pocket under gravity and does not re-enter the flow when the screen is removed for cleaning. Never install with screen pocket pointing upward — debris will bypass the screen and fall back into the line when the plug is opened.

Y Type Strainer — Vertical pipeline: Flow must travel downward (top inlet, bottom outlet). Install with screen pocket pointing to the side. Upward vertical flow is not recommended for Y strainers — debris will not settle into the screen pocket.

Blow-off / drain connection: Always install a ½” isolation valve on the blow-off connection. In steam service, this allows periodic blowing down of the screen pocket without removing the strainer from the line. In high-solids service, fit a ½” pressure gauge on the upstream and downstream flanges — rising differential pressure indicates the screen is fouling and requires cleaning.

Orientation marking: Flow direction arrow is cast into the WCB body — always verify flow direction matches installation before bolting up.

Applications in Indian Industries

• Power plants and boiler systems — steam distribution headers, boiler feed water lines, condensate return — Class 300 WCB Y strainer upstream of steam traps, PRVs, and control valves
• Oil and gas pipelines — crude oil transfer, fuel oil, LDO, HSD lines — WCB Class 150/300 Y strainer upstream of pumps and flow meters
• Thermic fluid systems — high temperature thermic oil heating circuits — WCB body rated to 425°C, SS316 screen
• Chemical plants — process pipelines, solvent lines, utility steam — WCB Class 150 with SS316 screen for corrosive media
• Pharmaceutical plants — pure steam, WFI water for injection, process water — WCB or SS316 body with 60/100 mesh SS316 screen
• EPC and project supply — bulk supply for power, refinery, petrochemical, and water treatment projects — Class 150 and Class 300, all sizes, test certificates
• Sugar mills — steam and juice lines — WCB Class 150 Y strainer for seasonal supply requirements
• Textile plants (Surat, Ahmedabad) — steam and thermic fluid lines for dyeing and finishing machines

EPC and Project Buyers

• Bulk supply — 10 Nos to 500+ Nos in single order
• All sizes DN15 to DN300, Class 150 and Class 300, Y and T type — consolidated GST invoice
• Material test certificates (MTC) — ASTM A216 WCB — available on request
• Hydrostatic test certificates before dispatch
• Flange drilling confirmation — ASME B16.5 standard
• Fast dispatch from Ahmedabad — 3 to 7 working days standard configurations

Frequently Asked Questions

1. What is WCB material and why is it used for strainers?

WCB is ASTM A216 Grade WCB cast carbon steel — the most widely used material for industrial valves and strainers in Indian process plants. It handles pressure up to 51 bar (Class 300) and temperature up to 425°C — covering steam, thermic fluid, oil, and general process service. It is more economical than stainless steel and rated for significantly higher pressure and temperature than cast iron.

2. What mesh size should I specify?

40 mesh (400 micron) is the standard for most pipeline service — steam traps, gate valves, globe valves, general process. Use 20 mesh for pump suction and large bore cooling water. Use 60 to 100 mesh for control valves, flow meters, and precision instruments. If in doubt, specify 40 mesh and Krishna Industries will confirm suitability for your application.

3. What is the blow-off connection?

A ½” or ¾” NPT threaded plug or valve at the bottom of the screen pocket. Fit a ½” ball valve on this connection — in steam service it allows periodic blowing down of collected debris without taking the strainer out of service. In high-solids service, pressure gauges upstream and downstream of the strainer indicate screen fouling.

4. Can WCB strainer be used for steam?

Yes — WCB is the standard material for industrial steam strainers in India. Class 150 covers up to 20 bar at 38°C (pressure drops with temperature — see P-T table). For high-pressure steam above 20 bar, specify Class 300. Use SS316 screen for steam service — SS304 is also acceptable for most steam applications.

5. Y type or T type — which to choose?

Y type for ½” to 6″ lines in steam, compressed air, thermic fluid, and instrument protection service — compact, low pressure drop, easy maintenance. T type / basket for 2″ and larger lines with high solids load — larger screen area, less frequent cleaning, better for cooling water and large bore process lines.

6. What is the MOQ?

MOQ is 10 Nos. Bulk project orders for 50 to 500+ Nos handled from stock and with fast procurement. Material test certificates and hydrostatic test certificates on request.

7. What flange standard is used?

ASME B16.5 Raised Face (RF) flanges — standard for Class 150 and Class 300. Flat Face (FF) available on request for compatibility with cast iron flanges. Confirm flange standard and drilling in your RFQ.

8. How often should the screen be cleaned?

Depends on pipeline condition and service. In a new installation, inspect after first 24 to 48 hours of operation — new pipelines contain weld slag and mill scale. In steady-state service, inspect quarterly or when differential pressure across the strainer rises by more than 0.3 to 0.5 bar. Install pressure gauges upstream and downstream for continuous monitoring.

Conclusion

The WCB Strainer Flanged supplied by Krishna Industries (KELOR) is the correct line protection device for Indian power plants, chemical plants, pharmaceutical facilities, thermic fluid systems, oil and gas pipelines, and EPC projects — ASTM A216 WCB body — SS304 or SS316 screen — Y type and T type — Class 150 and Class 300 — ½” to 12″ — 20 to 100 mesh — blow-off connection — ASME B16.34 and ASME B16.5 standard — hydrostatic tested. Fast dispatch from Ahmedabad, GST invoice, material test certificates, bulk project supply. WhatsApp your size, class, mesh, and quantity for bulk pricing within 2 hours.