B300 Pressure Relief Valves
B300 Series Overview
ZIRCO is proud to distribute 3B Controls B300 Series pressure relief valves as the official representative for 3B Controls in Western Canada. These valves ensure that tanks and vessels are kept safe during periods of excessive pressure caused by filling of product and changes in temperature due to climatic or external fire sources.
The B300 Series is available in four configurations with two main types to meet diverse industrial requirements:
- Weight Loaded (CV/CVS): Closed vent configurations with pressure settings from +2 mbarg to +100 mbarg
- Spring Loaded (OV/OVS): Open vent configurations with pressure settings from +100 mbarg to +2 barg
Both configurations can operate as vacuum relief valves, providing dual functionality for comprehensive tank and vessel protection. With lightweight design, factory-tested quality, and certified performance, the B300 Series provides reliable protection across Western Canada's industrial sectors.
Why Choose B300 Series?
Low Cost Maintenance
Lightweight design provides easy handling whilst interchangeable components ensure standard parts are easily replaced.
Factory Tested & Certified
All products are factory tested and fully certified to ensure reliable performance and safety compliance.
Self Draining Design
All products are designed so that any condensate drains away from seating areas, preventing corrosion and damage.
Low Leakage
Standard seating design ensures minimum leakage of less than 1 scfh at 90% of set pressure for optimal safety.
Stainless Steel Internals
Internal parts are stainless steel as standard, with exotic materials available upon request for special applications.
Flexible Connections
All valves are supplied with full form flanges to meet individual requirements. Other connections available upon request.
Technical Specifications
General Specifications
| Specification | Details |
|---|---|
| Size Range | 2″ (50 mm) – 12″ (300 mm) |
| Body Materials | Aluminium, Carbon steel, Stainless steel (standard) |
| Trim Material | Stainless steel (standard) |
| Diaphragm Material | PTFE |
| Seats | Removable |
| Flange Standards | ANSI / DIN / JIS / Specials |
| Design | Lightweight construction |
Configuration Options
| Configuration | Pressure Settings | Vent Type |
|---|---|---|
| B300-CV | +2 mbarg to +100 mbarg | Closed vent, weight loaded |
| B300-CVS | +2 mbarg to +100 mbarg | Closed vent, weight loaded (special) |
| B300-OV | +100 mbarg to +2 barg | Open vent, spring loaded |
| B300-OVS | +100 mbarg to +2 barg | Open vent, spring loaded (special) |
Available Options
| Option | Description |
|---|---|
| Steam Jackets | For temperature control |
| Proximity Switches | Indicate pallet lift |
| Tri Clamp Connections | Alternative connection type |
| Screwed Connections | Alternative connection type |
| Hazardous Materials | For special applications |
| PTFE Coating | For low temperature duties |
Typical Applications
| Application | Description |
|---|---|
| Tank Protection | Prevents pressure damage during filling operations |
| Temperature Changes | Protects against climatic temperature variations |
| External Fire Sources | Pressure relief from fire exposure |
| Vacuum Relief | Can operate as vacuum relief valve |
| Hazardous Environments | Special materials available |
Product Literature & Resources
Technical Documents
B300 CV Brochure
Complete B300-CV product brochure and specifications
B300 CVS Data Sheet
CVS configuration details and specifications
B300 OV Data Sheet
OV configuration details and specifications
B300 OVS Data Sheet
OVS configuration details and specifications
Request for Quote
Request for Quote (RFQ) Form
Download and complete this form to submit your relief valve requirements for quotation
Contact for More Information
ZIRCO is the authorized Western Canada representative for 3B Controls B300 Series Pressure Relief Valves. Contact our team for:
- Technical specifications and sizing
- Configuration options and recommendations
- Quotations and delivery information
- After-sales service and support
Ready to Protect Your Tanks and Vessels?
Contact our team today to discuss how ZIRCO can provide specialized pressure and vacuum relief valve solutions for your industrial applications with expertise spanning over 40 years of service across Western Canada.