Fig 500
This valve has been designed primarily for use on unvented hot water heating systems, where a high capacity, emergency steam relief capability is required.
High capacity and resilient PTFE seating, also make it ideal for steam, air and inert gas applications
Features & Benefits
- Resilient PTFE Seating Design
- High Degree of Seat Tightness
- Suitable for hot water, steam and air
- High discharge capacity
- Diaphragm protected parts
- Safe manual testing
- Easy inspection & cleaning
- Pressure setting locked and sealed
- Padlock available
- Body material – Gunmetal
- Available with Viton seat design
- Sizes from DN20 upwards are available with flanged inlet connections
- NPT Thread form available on some sizes
Approved and Certified in accordance with
- Pressure Equipment Directive 92/23/EC (PED)
- BS EN ISO 4126-1
- WRAS
- ISO 9001:2000
Pressure / Temperature Ratings
| Max Set Pressure | Max Temperature |
|---|---|
| 12.5 bar | 195°C |
| Size DN | R1 BSP | R2 BSP | A MM | B MM | C MM | D MM |
|---|---|---|---|---|---|---|
| 10 | ⅜" | ½" | 26 | 21 | 101 | – |
| 15 | ½" | ¾" | 33 | 20 | 120 | – |
| 20 | ¾" | 1" | 39 | 24 | 134 | 28 |
| 25 | 1" | 1¼" | 45 | 30 | 155 | 30 |
| 32 | 1¼" | 1½" | 54 | 36 | 201 | 28 |
| 40 | 1½" | 2" | 64 | 41 | 241 | 32 |
| 50 | 2" | 2½" | 76 | 47 | 267 | 36 |
| 65 | 2½" | 3" | 90 | 60 | 330 | 36 |
