Repairable
Product Overview
Spirax Sarco BPT13 series are repairable pressure balanced thermostatic steam traps, manufactured with brass bodies, featuring compact structure, stable performance, and reliable sealing. The standard model is BPT13A (angle connection), with various derivative models available, covering angle connection/straight connection, built-in filter, union inlet, and other configurations, flexibly adaptable to installation requirements of various industrial steam systems. The product achieves efficient drainage through precise thermostatic control, effectively avoiding steam waste and ensuring stable system operation.
Core Parameters
Operating Condition Limits
- Maximum Allowable Pressure (PMA): 16bar g (at 120℃)
- Maximum Allowable Temperature (TMA): 250℃ (at 7bar g)
- Maximum Operating Pressure (PMO): 13bar g (at 220℃)
- Maximum Operating Temperature (TMO): 225℃ (at 7bar g)
- Minimum Allowable/Operating Temperature: 0℃
- Design Maximum Cold Water Test Pressure: 24bar g
Capsule Type Selection
| Capsule Model | Drainage Trigger Condition | Description |
|---|---|---|
| STD Type (Standard) | 12℃ below saturated steam temperature | Default configuration, suitable for normal conditions |
| NTS Type (Optional) | 4℃ below saturated steam temperature | For high-precision drainage requirements |
| SUB Type (Optional) | 24℃ below saturated steam temperature | For specific low-temperature drainage scenarios |
Note: Capsule type must be clearly specified when ordering to avoid affecting performance.
Product Models and Specifications
Model Classification and Key Differences
| Model | Connection Type | Special Configuration |
|---|---|---|
| BPT13A | Angle Connection | - |
| BPT13AX | Angle Connection | Built-in Filter |
| BPT13UA | Angle Connection | Union Inlet |
| BPT13S | Straight Connection | - |
| BPT13SX | Straight Connection | Built-in Filter |
| BPT13US | Straight Connection | Union Inlet |
Dimensions and Weight Parameters (Unit: mm/kg)
| Model | Port Size | Dimension A | Dimension B | Dimension C | Dimension D | Dimension E | Weight (Approx.) |
|---|---|---|---|---|---|---|---|
| BPT13A | ½" | 20 | 38 | 53 | 25 | 55 | 0.40 |
| BPT13A | ¾" | 27 | 40 | 62 | 25 | 55 | 0.45 |
| BPT13S | ½" | 14 | 76 | 47 | 38 | 55 | 0.45 |
| BPT13S | ¾" | 20 | 80 | 53 | 40 | 55 | 0.50 |
| BPT13UA | ½" | 20 | 67 | 53 | 25 | 55 | 0.50 |
| BPT13UA | ¾" | 27 | 75 | 62 | 25 | 55 | 0.55 |
| BPT13US | ½" | 19 | 105 | 52 | 38 | 55 | 0.55 |
| BPT13US | ¾" | 22 | 115 | 57 | 40 | 55 | 0.60 |
Component Material Details
| No. | Component Name | Material Specification |
|---|---|---|
| 1 | Body | Brass (BS EN 12165 CW 617N) |
| 2 | Cap | Brass (BS EN 12165 CW 617N) |
| 3 | O-Ring | Synthetic Rubber Fluorocarbon |
| 4 | Capsule | Stainless Steel |
| 5 | Spring | Stainless Steel (BS 2056 302 S26) |
| 6 | Baffle | Stainless Steel (BS 1449 304 S16) |
| 7 | Valve Seat | Stainless Steel (BS 970 431 S29) |
| 8 | Valve Seat Gasket | Stainless Steel (BS 1449 304 S11) |
| 9 | Filter (*Optional) | Stainless Steel |
| 10 | Union Nut and Tail Pipe | Brass (BS EN 12165 CW 617N) |
Note: Part No. 9 is the built-in filter component, standard only for BPT13AX and BPT13SX models.
Discharge Performance
The BPT13 series steam traps provide stable condensate discharge capability, covering pressure differential conditions from 0.1-13bar, with maximum condensate discharge up to 2000kg/h (specific discharge depends on actual pressure differential and water temperature). The product efficiently discharges cold and hot condensate, avoiding efficiency reduction or equipment damage caused by water accumulation in pipelines, suitable for medium and low-pressure steam system drainage requirements.
Installation and Maintenance Instructions
Key Installation Requirements
- During installation, the capsule must be kept in a horizontal position with the valve cap facing upward.
- A section of cold pipe is recommended in front of the steam trap to ensure precise thermostatic control.
- Strictly select the corresponding port size model according to pipeline specifications. Threaded connections must comply with BSP (BS 21) or NPT standards.
- For detailed installation steps, please refer to the Installation and Maintenance Guide (IM-P122-02) provided with the product.
Recommended Tightening Torque
| Component Name | Size Specification | Tightening Torque Range (Nm) |
|---|---|---|
| O-Ring | 50A/F | 50-60 |
| Cap Gasket | 50A/F | 90-110 |
| Valve Seat | 17A/F | 35-40 |
Spare Parts Information
Available Spare Parts List
| Spare Part Name | Specification Description | Quantity Configuration |
|---|---|---|
| Capsule and Valve Seat Assembly | Includes Part 3 (O-Ring), 4 (Capsule), 5 (Spring), 6 (Baffle), 7 (Valve Seat), 8 (Valve Seat Gasket), 9 (Filter) | 1 Set |
| Cap Gasket (Early Models) | Standard Gasket Type | 3 Pieces |
| Cap Gasket (Current Models) | O-Ring Type | 3 Pieces |
| Filter | For Models with Filter | 3 Pieces |
Spare Parts Ordering Instructions
- When ordering spare parts, specify the complete model, port size, and capsule code of the steam trap.
- Example: 1-Capsule and Valve Seat Assembly for Spirax Sarco ½" BPT13S Pressure Balanced Steam Trap, BSP threaded connection, STD type capsule.
- Components marked with dashed lines in the diagram are not available as individual spare parts and must be ordered as assemblies.
Certificates and Ordering Instructions
Certificate Provision
The product can provide supplier test reports. If related certificates are required, they must be clearly specified when ordering.
Ordering Example
1-Spirax Sarco ½" BPT13AX Pressure Balanced Steam Trap, BSP threaded connection, brass body with built-in filter, STD type capsule (drains when 12℃ below saturated steam temperature).
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