Description
The BBV is specifically designed for the removal of suspended/deposited solids and water from the bottom of steam boilers.
The BBV is available in air-actuated and manual versions.
The air-actuated version is supplied with a manual hand lever.
The valve is spring-to-close on power failure and the manual version can easily be upgraded to an automatic version.
When used with a Spirax Sarco blowdown controller the automatic version provides timed control of blowdown, ensuring that the recommended blowdown occurs with the minimum of heat loss and avoids duplication and omissions.
The valve can be fitted with a mechanical switchbox.
This can be linked to the blowdown controller or a BMS system to indicate when the valve has not closed.
An optional ¼” 3-way solenoid valve may be directly mounted on the side of the actuator.
WARNING:
This product should only be used to purge boiler water containing non-metallic sludge and sediment within the pressure and temperature limits.
For optimum performance, ensure that TDS value is in accordance with the boiler’s instructions.
Principal features
- Easily upgraded from manual to automatic operation.
- Dedicated self-adjusting and self-cleaning spindle seals.
- Engineered for the specific application of bottom blowdown.
- Flow pressure assists closing.
Available types of boiler blowdown valve
Air pneumatically actuated supplied with a manual actuation lever | BBV43 PN/M | Steel body |
BBV63 PN/M | Stainless steel body | |
BBV83 PN/M | Alloy steel body | |
Manually actuated complete with a manual actuation lever | BBV43 M | Steel body |
BBV63 M | Stainless steel body | |
BBV83 M | Alloy steel body |
Please note: All of the ‘M’ versions can be automated to ‘ PN/M‘.
Optional extras
– Automatic bottom blowdown timer controller.
– Mechanical switch (with mounting kit).
– Pneumatic actuator upgrade kit.
– Physical lock kit.
– ¼” 3-way solenoid valve Option
Standards
This product range fully complies with the requirements of the Pressure Equipment Directive (PED).
Certification
This product is available with material certification to EN 10204 3.1.
Note: All certification/inspection requirements must be stated at the time of order placement.
Size and pipe connections
DN15, DN20, DN25, DN32, DN40 and DN50
½”, ¾”, 1″, 1¼”, 1½”, 2″
Flanged EN 1092 PN40, PN63 and PN100
Flanged ASME 300 and ASME 600
Materials
No. | Part | Material | |
1 | Body | BBV4_ | Carbon Steel |
BBV6_ | Stainless Steel | ||
BBV8_ | Alloy Steel | ||
2 | Plug | Stainless Steel + stellite | |
3 | Seat | Stainless Steel + stellite | |
4 | Seat gasket | Reinforced exfoliated graphite | |
5 | Seat retainer | Stainless Steel | |
6 | Cover | BBV4_ | Carbon Steel |
BBV6_ | Stainless Steel | ||
BBV8_ | Alloy Steel | ||
7 | Packing | BBV__P | PTFE |
BBV__H | Graphite | ||
8 | Cover gasket | Reinforced exfoliated graphite | |
9 | Bonnet nuts | BBV__H | Stainless Steel |
BBV6_ | |||
Other | Carbon Steel | ||
10 | Bonnet studs | BBV__H | Stainless Steel |
BBV6_ | |||
Other | Carbon Steel | ||
11 | Actuator clamp nut | BBV6_ | Stainless Steel |
Other | Carbon Steel | ||
12 | Gland nut | Stainless Steel | |
13 | Scraper ring | PTFE | |
14 | Yoke | SG Iron | |
15 | Closed plate | Stainless Steel | |
16 | Hex. head screw | Carbon Steel | |
17 | Nut | Carbon Steel | |
18 | Upper housing | Carbon Steel | |
19 | Diaphragm | Reinforced NBR | |
20 | Gasket | Reinforced Graphite | |
21 | Vent plug | Brass | |
22 | Bolt | Carbon Steel | |
23 | Diaphragm plate | Aluminium | |
24 | Spindle | Stainless Steel | |
25 | Lever stem | Stainless Steel | |
26 | Screw | Carbon Steel | |
27 | Seal | Polyurethane | |
28 | Spring | Spring Steel | |
29 | Spring guide | Stainless Steel | |
30 | Connector | Stainless Steel | |
31 | Lever | SG Iron | |
32 | Axis | Stainless Steel | |
33 | Roller | Stainless Steel | |
34 | Spring graphite | Spring Steel | |
35 | Elastic ring | Carbon Steel | |
36 | Elastic ring | Carbon Steel | |
37 | Washer | Carbon Steel | |
38 | O’ring | Viton | |
39 | Spacer | Carbon Steel | |
40 | Washer | Carbon Steel |
BBV
Automatic or Manually Actuated Boiler Blowdown Valves DN15 to DN50
PHONE: 0812-3340-4116WHATSAPP: 0812-3340-4116
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