PN16
Product Overview
Spirax Sarco Fig12 ductile iron Y-type strainer is a high-efficiency device specifically designed for industrial fluid filtration, using a ductile iron body combined with a carbon steel cap, fitted with high-precision filter mesh to effectively capture impurities in the medium and protect downstream equipment for safe operation. The product complies with the European Pressure Equipment Directive 97/23/EC and is ISO 9001 certified, supports BSP or NPT threaded connections, and allows selection of filter mesh with different apertures and mesh sizes according to actual requirements. The cap can be drilled and tapped to install blowdown or discharge valves as needed, suitable for steam, gas and liquid systems.
Core Technical Parameters
Basic Performance Parameters
- Applicable Media: Steam, gas, liquid
- Maximum Allowable Pressure (PMA): 25 bar g @ 120℃
- Maximum Operating Temperature (TMO): 260℃ @ 19.5 bar g
- Minimum Operating Temperature: -10℃
- Cold Hydraulic Test Pressure: 38 bar g
- Cv/Kv Conversion Formula: Cv (UK) = Kv × 0.963; Cv (US) = Kv × 1.156
Filter Mesh Parameters
| Filter Mesh Material | Optional Aperture | Optional Mesh Size |
|---|---|---|
| Stainless Steel 316L | 0.8mm, 1.6mm, 3mm | 40 mesh, 100 mesh, 200 mesh |
| Monel Alloy | 0.8mm, 3mm | 100 mesh |
Blowdown/Discharge Valve Connection Parameters
| Strainer Port Size | Blowdown Valve Connection | Discharge Valve Connection |
|---|---|---|
| 1/2" | 1/4" | 1/4" |
| 3/4", 1" | 1/2" | 1/2" |
| 1 1/4", 1 1/2" | 3/4" | 3/4" |
| 2" - 3" | 1 1/4" | 3/4" |
Cv Value Table
| Port Size | 1/2" | 3/4" | 1" | 1 1/4" | 1 1/2" | 2" | 2 1/2" | 3" |
|---|---|---|---|---|---|---|---|---|
| Aperture 0.8mm, 1.6mm, 3mm / 40 mesh, 100 mesh | 3.6 | 11 | 15.5 | 26 | 41 | 68 | 82 | 115 |
| 200 mesh | 3.6 | 9 | 13.0 | 21 | 35 | 55 | 66 | 93 |
Dimensions and Weight
Detailed Dimensions and Weight Parameters
| Port Size | A (mm) | B (mm) | C (mm) | D (mm) | Mesh Area (cm²) | Weight (kg) |
|---|---|---|---|---|---|---|
| 1/2" | 87 | 55 | 79 | 32 | 25 | 0.47 |
| 3/4" | 110 | 65 | 93 | 36 | 42 | 0.77 |
| 1" | 125 | 78 | 110 | 48 | 71 | 1.40 |
| 1 1/4" | 155 | 103 | 140 | 60 | 135 | 2.15 |
| 1 1/2" | 190 | 115 | 153 | 65 | 161 | 3.30 |
| 2" | 230 | 140 | 177 | 76 | 251 | 5.10 |
| 2 1/2" | 274 | 177 | 230 | 94 | 406 | 7.30 |
| 3" | 280 | 183 | 237 | 105 | 406 | 7.50 |
Note: A is the length dimension, B is the safety distance, C is the removal distance, D is the connection-related dimension, and weight is approximate.
Component Material Details
Component Material Parameters
| No. | Component Name | Material Specification |
|---|---|---|
| 1 | Body | Ductile Iron (DIN 1693 GGG 40) |
| 2 | Cap | Carbon Steel (1.0460, ASTM A105N) |
| 3 | Cap Gasket | Reinforced Laminated Graphite (with thin stainless steel support ring) |
| 4 | Filter Mesh | Stainless Steel 316L (standard), Monel Alloy (optional) |
| 5 | Bolt | Carbon Steel (BS 3692 Gr.8.8) |
| 6 | Washer | Carbon Steel (BS 4320 TI Form A) |
Installation and Maintenance
Installation Requirements
- The strainer must be installed horizontally according to the flow direction on the body. In steam or gas pipelines, the body must be kept horizontal; in liquid systems, the body must be installed vertically downward.
- Shut-off valves must be installed upstream and downstream to facilitate maintenance and mesh replacement.
- Remove all protective items before installation, slowly open the shut-off valves to normal operating conditions, and check for leaks.
Maintenance Specification
- When safety operating procedures are followed, maintenance can be carried out directly on the pipeline.
- It is recommended to replace the cap gasket and related spare parts during maintenance to ensure sealing performance.
- The stainless steel support ring in the cap gasket must be handled carefully to avoid damage.
Disposal Instructions
The product is recyclable and, when disposed of according to standard procedures, will not cause environmental harm.
Spare Parts Information
Optional Spare Parts List
| Spare Part Name | Specification Description | Notes |
|---|---|---|
| Filter Mesh | Must specify material (Stainless Steel 316L/Monel Alloy), aperture/mesh size, applicable strainer port size | Core spare part |
| Cap Gasket | Reinforced laminated graphite material with stainless steel support ring | Recommended to order in sets of 3 |
Spare Parts Ordering Examples
- Spirax Sarco stainless steel filter mesh, 0.8mm aperture, for 1 1/2" Fig12 strainer
- Spirax Sarco cap gaskets (3 sets), suitable for 2" Fig12 strainer
Ordering Information
Product Ordering Example
Spirax Sarco 2" Fig12 ductile iron strainer, BSP threaded connection, stainless steel filter mesh aperture 0.8mm
Ordering Notes
- Clearly specify strainer port size, thread type (BSP/NPT), filter mesh material and aperture/mesh size.
- If blowdown/discharge valve connection is required, it must be noted when ordering.
- If a test report is required, it must be specifically stated when ordering.
Bolt Torque Parameters
| Port Size | Bolt Specification | Torque Range (N·m) |
|---|---|---|
| 1/2" | M28 | 38 - 40 |
| 3/4" | M32 | 42 - 48 |
| 1" | M42 | 70 - 80 |
| 1 1/4" | M56 | 124 - 144 |
| 1 1/2" | M60 | 164 - 184 |
| 2" | M72 | 234 - 264 |
| 2 1/2", 3" | M12 | 50 - 55 |
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