Monoflange Slimline Double Block and Bleed Valves, SDBB valves.

1. Key Value Proposition: "The Slimline Advantage"
Traditional isolation setups require two separate block valves, a bleed valve, and several feet of piping. SDBB monoflanges integrate these into a single, machined body.

2. Anti-crevice corrosion design: SDBB valves from EV METAL have a unique, and therefore patented, world class anti-crevision corrosion design which was developed in collaboration with TotalEnergies. The design prevents the risk of crevice corrosion, caused by salty or humid offshore environment. This unique design makes SDBB valves from EV METAL the NUMBER 1 choice by leading off shore oil & gas companies, offshore oil & gas platform operators and offshore oil & gas platform owners.

3. Space & Weight Savings: Reduces weight by up to 75% and significantly shrinks the installation footprint, making them ideal for offshore platforms or compact instrumentation racks.
Enhanced Reliability: Eliminates multiple potential leak paths (flanged or threaded joints), reducing failure points from vibration, corrosion, or fatigue.
Lower Total Cost of Ownership: Although the unit price may be higher, the total cost is often 30% lower due to faster installation (fewer man-hours) and reduced maintenance requirements.

4. Technical Specifications:
Standard Configurations: Typically features two independent isolation valves (blocks) and one central vent valve (bleed).
Pressure Ratings: Available from ANSI 150 to 2500 (or up to 420 bar / 6.500 psig).
Standard Materials: Stainless Steel (AISI 316L), SAF 2205 (Duplex), SAF2507 (Super Duplex), 6MO (254SMo)
Compliance: EV METAL SDBB valves are tested according to the following standards: API 6D/6A, ASME B16.34, NACE MR0175 (sour gas service), Fire Safe Test (API 6FA) and anti-static design (EN 12266-2).

5. Primary Applications:
Pressure Instrument Isolation: Direct mounting of pressure gauges and transmitters to process lines.
Chemical Injection & Sampling: Provides safe points for injecting chemicals or taking process samples without system shutdowns.
Critical Isolation: Ideal for hazardous media, high-pressure steam, or "cold service" applications (operable down to -50°C).

6. Operational Benefits:
Positive Isolation: The dual-barrier system ensures zero leakage, even if one seal fails.
Safety Verification: The bleed port allows operators to verify the line is fully depressurized before starting maintenance, a critical safety requirement for OSHA compliance.

Stop Over-Engineering Your Isolation Points.
 
Why settle for a bulky 'tree' of separate valves when you can have a single, high-integrity forged body? Our SDBB (Slimline Double Block and Bleed) Monoflanges slash installation weight by up to 75% and cut potential leak paths by 60%. Designed for the most hazardous environments, they provide positive isolation you can trust—saving you space, time, and total cost without compromising safety.

2. Key Comparison Table: SDBB/Monoflange vs. Traditional DBB setups:

Size & Weight: SDBB valves are designed with compact dimensions, reducing weight by thousands of pounds in multi-installation scenarios compared to traditional, assembled piping.

Leak Path Reduction: By combining multiple valves into a single body, the number of potential leak points (flanges/connections) is minimized, reducing fugitive emissions.
Installation & Maintenance: They offer significantly faster installation and easier maintenance because the unit is pre-tested and replaces up to three separate valves.

Safety & Performance: SDBB valves provide superior isolation for high-risk, critical systems. 
Design Flexibility: Available in various configurations for instrument or process connections, often featuring needle-type valves for precise flow control and venting.  

Enhanced Integrity & Safety: Monoflange SDBB valves are designed for critical instrumentation, providing "true" double isolation and a bleed mechanism in a single high-integrity unit. They are often used for pressure instrument isolation, vents, and drains.

Cost Savings: While the initial cost of a specialized SDBB valve may be higher, long-term savings are realized through reduced maintenance, lower inventory (ordering one component instead of three), and minimized downtime.

Compliance: These valves are engineered to meet strict international standards such as API 6D and API 6A making them ideal for hazardous or offshore environments where space and environmental protection are critical.

Vibration Resistance: Their compact design and lower center of gravity reduce the risk of damage from system vibrations compared to bulky traditional valve trees.