Donkin Series 777 Baurer Valve PN2
Double Block & Bleed
Andy Hatton
National Sales Manager – Gas
Flanged Parallel Slidevalve to EN12266 for gas. Temperature -20°C to +60°C.
The Series 777 Baurer valve is a double faced, parallel slide valve for natural and manufactured gasses. A self cleaning action takes place in operation between the doors and the faces by means of volute springs placed centrally between the parallel doors. A further advantage of this double door design is that, in the closed position, the valve is suitable for water sealing between the seats, thereby giving ultimate safety on the downstream side of the valve.
| Variant 777/11-001 | |
|---|---|
| Connection: | No connection type specified |
| Material: | Steel |
| DN: | DN750 - DN1200 |
| PN: | PN 2 |
| Closing direction: | Clockwise to Close |
Features
- The valves may be machined with clear bore for under-pressure drilling work if required.
- Two cleaning covers are fitted as standard to allow easy access for the removal of dust and dirt.
- Options:
- Available for vertical or horizontal operation.
- Handwheels, indicators, stem cap, gearboxes and electric actuators are available if required.
- Outside screw version (Series 778) available for dirty gas use.
- Double Block and Bleed on certain sizes.
- Alternative flange drillings available.
- Vertical (non block and bleed)
- Vertical (block and bleed)
- Horizontal (non block and bleed)
- Horizontal (block and bleed)
Downloads
Installation, Operation & Maintenance
Price list
Datasheet
Guidelines
Reference nos. and dimensions:
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| Ref. no. | DN mm |
Flange drillling |
L mm |
Dd mm |
H mm |
H2 mm |
H3 mm |
HF mm |
HG2 mm |
W mm |
PN Class GAS |
Theoretical weight/kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 777-0750-11-0131023 | 750 | PN16 | 1200 | |||||||||
| 777-0750-11-0131711 | 750 | PN16 | 1200 | |||||||||
| 777-0750-11-073 | 750 | BS10 D | 559 | 762 | 1558 | 499 | 2057 | NA | NA | 1086 | 2 | 1200 |
| 777-0750-11-07312 | 750 | BS10 D | 559 | 762 | 1558 | 499 | 2057 | NA | NA | 1086 | 2 | 1200 |
| 777-0800-11-0131414 | 800 | PN16 | 559 | 762 | 1804 | 513 | 2317 | 1622 | 1754 | 1086 | 2 | 1865 |
| 777-0900-11-0131024 | 900 | PN16 | 2690 | |||||||||
| 777-0900-11-0131040 | 900 | PN16 | 711 | 914 | 1916 | 614 | 2606 | 1992 | NA | 1277 | 2 | 2690 |
| 777-0900-11-0131211 | 900 | PN16 | 711 | 914 | NA | 614 | 2580 | NA | 1918 | 1277 | 2 | 2718 |
| 777-1200-11-0131211 | 1200 | PN16 | 763 | 1220 | 2326 | 824 | 3169 | NA | 2295 | 1639 | 2 | 5428 |
3D drawings
Enquiry
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Components
| 1. | Body | Steel |
| 2. | Bonnet | Steel |
| 3. | Door | Cast iron GJL-250 |
| 4. | Spindle | Steel |
| 5. | Seals | NBR rubber |
| 6. | Fasteners | Steel 8.8 |
Test/Approvals
-
Tested according to EN12266-1. Seat: 1.1 x PN (in Bar), Body: 1.5 x PN (in Bar)