The SANT Cast Iron Stop Cum Non Return Valve is designed to provide reliable flow isolation and non-return protection in industrial pipeline applications. It features a straight pattern, bolted bonnet, outside screw and yoke construction, rising stem and renewable seating components.
A combined valve solution for flow isolation and reverse-flow prevention in industrial piping systems.
The Cast Iron Stop Cum Non Return Valve combines the functions of a stop valve and a non-return valve in a single valve arrangement. This configuration allows the operator to isolate the pipeline while also helping prevent unwanted reverse flow.
The valve is specified with a straight pattern body, bolted bonnet, outside screw and yoke mechanism, rising stem and renewable seat and disc. These features provide a practical arrangement for industrial service and maintenance.
Important design and construction features of the valve.
Combines flow isolation with protection against reverse flow within the pipeline.
Bolted bonnet construction provides access for inspection and maintenance when required.
Renewable seating components support serviceability and maintenance of the valve.
Stainless steel AISI-410 is specified for the seat ring, disc ring and stem.
Detailed product specifications based on the supplied technical information.
| Parameter | Specification |
|---|---|
| Product | SANT Cast Iron Stop Cum Non Return Valve |
| HSN Code | 84813000 |
| Product Standard | BS:5152 |
| Type of Pattern | Straight |
| Pressure / Rating | PN 16 |
| Body Material | Cast Iron IBR 86 to 93 Gr.A |
| Bonnet Type | Bolted Bonnet |
| Stem Arrangement | Outside Screw & Yoke Type Rising Stem |
| Seat Type | Renewable Seat |
| Disc Type | Renewable Disc |
| Trim | Stainless Steel AISI-410 |
| Gland Packing | Expanded Pure Flexible Graphite |
| End Details | Flanges as per DIN 2533 RF, PN 16, Undrilled |
| Maximum Working Pressure | Max. BOP 13 kg/cm²g at 220°C Steam |
Specified hydrostatic test pressures and certification details.
| Test / Rating | Specified Value |
|---|---|
| Pressure Rating | PN 16 |
| Body Test Pressure | 26 kg/cm²g (Hyd.) |
| Seat Test Pressure | 16 kg/cm²g (Hyd.) |
| Back Seat Test Pressure | 16 kg/cm²g (Hyd.) |
| Working Pressure | Max. BOP 13 kg/cm²g at 220°C Steam |
| IBR Certification | Test Certificate in Form III-C as per IBR is furnished with every supply. |
Material specifications for the major valve components.
| Component | Material | Specification |
|---|---|---|
| Body, Bonnet, Valve Disc, Gland & Handwheel | Cast Iron | IS:210 Gr.FG200 |
| Body Seat Ring, Valve Disc Ring & Stem | Stainless Steel | AISI-410 |
| Gasket | Compressed Asbestos Fiber | IS:2712 Gr.C |
| Gland Packing | Expanded Pure Flexible Graphite | — |
| Fasteners | Mild Steel | — |
| Yoke Bush | Aluminum Bronze | — |
The valve combines manual flow isolation with non-return functionality.
The handwheel operates the rising stem mechanism to open the valve and establish the required flow path.
The stop function allows the operator to isolate the line when flow interruption is required.
The non-return function helps restrict reverse flow when downstream pressure conditions cause flow reversal.
Application suitability depends on the operating medium, pressure, temperature and project requirements.
Consider the operating conditions and connection requirements before installation.
Nominal dimensions provided for the specified valve sizes.
| Nominal Size (mm) | Nominal Size (Inches) | F H Closed (mm) | W (mm) |
|---|---|---|---|
| 40 | 1.1/2" | 200 ± 1 | 220 |
| 50 | 2" | 230 ± 2 | 240 |
| 65 | 2.1/2" | 290 ± 2 | 280 |
| 80 | 3" | 310 ± 2 | 310 |
| 100 | 4" | 350 ± 2 | 350 |
| 125 | 5" | 400 ± 3 | 400 |
| 150 | 6" | 480 ± 3 | 460 |
| 200 | 8" | 600 ± 3 | 510 |
It is a combined valve arrangement that provides flow isolation and non-return functionality in a pipeline.
The specified pressure rating is PN 16.
The supplied product specification lists BS:5152 as the product standard.
The valve is specified with renewable seat and renewable disc components.
The specified trim material is stainless steel AISI-410.
The supplied specification lists a maximum BOP of 13 kg/cm²g at 220°C for steam service.
The supplied dimensional table covers nominal sizes from 40 mm (1.1/2") through 200 mm (8").
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