Specification

Newway 6-inch 600LB Double Ball A105N Trunnion Double Block and Bleed Ball Valve

I. Product Overview

Newway 6-inch 600LB Double Ball A105N Trunnion Double Block and Bleed Ball Valve is a high-performance shut-off device for medium-to-high pressure pipelines. Made of A105N forged steel with trunnion support, it ensures bidirectional sealing and cavity pressure relief, widely used in pipeline isolation, online maintenance, and emergency shutdown in oil & gas, chemical, and power industries. Compliant with API 6D, API 608, and ASME B16.34, it supports manual/pneumatic/electric operation for reliable fluid control.

II. Core Features

(A) Structural Advantages

DDB Function: Dual seat sealing with bleed port for bidirectional block and safe pressure relief, meeting API 598 Class IV;

Trunnion Support: Reduces stem load by 30%, enhances sealing stability by 50% under high pressure;

Fire & Explosion Proof: API 607 certified, blowout-proof stem for hazardous areas (Class I, Div. 1).

(B) Material Compatibility

(C) Operation & Maintenance

Multi-Drive Options: Manual gearbox (≤180N·m), optional pneumatic (≤1.5s response) or electric (IP68);

Quick-Clean Design: Bonnet bolt connection enables 20-min seal replacement, 40% lower maintenance cost.

Product Overview

III. Technical Specs & Manufacturing

(A) Key Parameters

Pressure: 600LB (PN100, 10MPa), 1.5x hydrostatic test (15MPa/30min);

Size: 6″ (DN150), full-bore with Cv=120, 15% lower pressure drop;

Temp Range: -196℃~450℃ (optional -50℃/550℃).

(B) Precision Manufacturing

Forging Process:

4000-ton forging (ratio ≥5:1), ASTM No.8 grain, UT-tested for ≥Φ1.2mm defects;

Ball ground to ≤0.003mm roundness, ≤0.005mm fit with seat.

Surface Treatment:

Electropolished interior (Ra≤0.8μm), passivated exterior (ASTM A967), optional zinc coating (85μm) for marine use;

Stellite overlay on seats (HRC45), 3x erosion resistance.

Testing:

Helium leak test (≤5×10⁻¹⁰Pa·m³/s), thermal cycle test (-46℃~200℃/50 cycles).

IV. Applications & Value

(A) Industrial Use Cases

Oil & Gas: Sulfur-resistant (NACE MR0175) for 1000ppm H₂S, 8-year life; pipeline pigging reduces downtime by 50%;

Chemical: Reactor isolation (≤2s shut-off), F316L for 540℃ steam with 90% less leakage;

Power: Seismic-proof for nuclear plants (IEEE 344), duplex 2205 for LNG (-162℃).

(B) Customer Benefits

Compliance: CE-PED, API 6D certified, meets OSHA standards;

Efficiency: Streamlined flow saves ~$12,000/year in pumping costs;

Customization: Non-standard flanges (DIN/GOST), extreme temps (-196℃~650℃), ATEX Ex d.