- RF FF FM Rtj Bw
- Pneumatic
- ANSI CLASS 150-900
- Straight Through Type
- Fixed Ball Valve
- Blow-Down Valve, Atmospheric Valve, Bypass-Valve
- Normal Temperature
- API 6D, API 608, BS 5351/DIN3357/JIS B2071
- Industrial Usage, Water Industrial Usage, Household Usage
Specification
ANSI Stainless Steel F304 F316 Flanged Lever Gear Double Block and Bleed Ball Valve
Product description
|
Material |
A105/Stainless Steel/Duplex steel/Aluminium Bronze/Nickel-aluminum Bronze/Titanium Alloy, etc. |
|
Size |
2″-20″(DN50-DN500) |
|
Port |
Full Port/Reduce Port |
|
Working Pressure |
150LB/300LB/600LB/900LB/1500LB/2500LB |
|
Connection Ends |
RF, RTJ, BW,NPT |
|
Working Temp. |
-20ºC~280ºC for soft seat, -196ºC to 600ºC for metal seat |
|
Suitable Medium |
Water, Natural Gas, Oil and some corrosive liquid |
|
Operated |
Manual, Worm Gear, Pneumatic actuator, Electric Actuator |
|
Features |
Fire safe, anti-static device |
|
Design standard |
ASME B16.34,API608,API6D |
|
Inspection & Testing |
According to API598 |
Testing Pressure(Mpa)
|
Pressure |
150LB |
300LB |
600LB |
900LB |
1500LB |
2500LB |
|
|
Strength Testing |
3.0 |
7.5 |
15.4 |
23.0 |
37.5 |
63.0 |
Mpa |
|
Seal Testing |
2.2 |
5.5 |
11.2 |
16.9 |
27.5 |
46.2 |
|
|
Air Testing |
0.6 |
0.6 |
0.6 |
0.6 |
0.6 |
0.6 |
Product Overview
Newway ANSI 2″ 150LB Stainless Steel Double Block and Bleed Ball Valve: Precision Solution for Industrial Fluid Safety Control
I. Technical Overview
The Newway ANSI 2″ 150LB Stainless Steel Double Block and Bleed (DDB) Ball Valve is a high-performance shut-off device designed for medium-low pressure pipeline systems. Featuring AISI 304/316 stainless steel forged body and floating ball structure, it ensures dual seat sealing and cavity pressure relief, blocking upstream/downstream media while releasing internal pressure. With 2″ (DN50) size, 150LB (PN20) rating, and -20℃~180℃ operating range, it suits non-corrosive/weakly corrosive media like water, steam, oil, and natural gas, widely used in petrochemical, food-pharmaceutical, water treatment, and HVAC sectors. Compliant with ASME B16.34, API 6D, and ISO 5211, it supports manual/electric/pneumatic operation for reliable fluid control.
II. Core Product Features
(A) Double Block and Bleed (DDB) Design
Bidirectional Sealing: Independent PTFE seats with spring preloading ensure bidirectional bubble-tight sealing (leakage ≤1×10⁻⁹m³/s), meeting API 598 Class IV. Blocks media under pressure simultaneously;
Safety Pressure Relief: Central bleed port enables online pressure release, eliminating overpressure risks for hot work and pipeline maintenance;
Floating Ball Structure: Unsupported ball self-compresses against seats via medium pressure, enhancing low-pressure sealing reliability by 25% and reducing operation torque by 15%.
(B) Material & Application Compatibility
|
Component |
Material |
Key Advantage |
Media Compatibility |
|
Body/Ball |
AISI 304/316 SS |
Tensile ≥515MPa, intergranular corrosion resistance |
Drinking water, steam, oil, natural gas |
|
Seat |
PTFE+Carbon Fiber |
-20℃~180℃ resistance, anti-creep wear |
Weak acids/alkalis, food-grade media |
|
Stem |
316 SS |
HRC20-25 hardness, blowout-proof (ASME B16.34) |
Wet environments, mildly corrosive media |
|
Seals |
Viton Fluororubber |
Chemical resistance, ≤10% compression set |
Weak acids/alkalis, oil, steam condensate |
(C) Operation & Maintenance
Reliable Manual Drive: Standard extended lever handle (≤80N·m torque), optional gearbox (1:3 ratio) for effortless operation in frequent cycles;
Quick-Disassembly Design: 12-point symmetric bolted bonnet allows 10-min seal replacement, improving maintenance efficiency by 30% for online servicing.
III. Technical Specs & Manufacturing
(A) Key Performance Indicators
Pressure/Temp Range:
Pressure: 150LB (PN20, max 2.0MPa);
Temperature: -20℃~180℃ (standard), optional -40℃~200℃ (cryogenic);
Bore & Flow:
2″ full bore (DN50), Cv=100, 20% lower pressure drop than reduced-bore valves;
Testing Standards:
Hydrostatic: 1.5x pressure (15-min hold);
Gas-tight: 1.1x pressure (nitrogen, ≤1×10⁻⁹m³/s leakage).
(B) Precision Manufacturing
Stainless Steel Forging:
Body forged from AOD-refined SS billet (C≤0.08%) via 1000-ton press (forging ratio ≥3:1), achieving ASTM No.7+ grain size;
Ball turned by CNC lathe to ≤0.01mm roundness, ≤0.02mm fit with seats for sealing precision.
Surface Treatments:
Mechanical polished interior (Ra≤1.6μm) reduces media deposition;
Passivated exterior (ASTM A967), electropolished (Ra≤0.8μm) for food-grade applications.
Quality Control:
100% magnetic particle inspection (MT) for surface defects;
50,000-cycle testing with ≥95% sealing retention (Far beyond the industry 30,000 cycles).
Valve Details
IV. Applications & Industry Value
(A) Typical Industrial Uses
Petrochemical:
Oil loading/unloading pipeline isolation: 316 SS valves last 5 years in sulfurous crude, supporting live maintenance;
Reactor inlet/outlet control: DDB function ensures maintenance safety, minimizing media leakage.
Food & Pharmaceutical:
Beverage CIP systems: 304 electropolished valves meet FDA standards, no media retention;
Pharmaceutical steam sterilization: PTFE seals withstand 134℃, reducing leakage incidents by 85% annually.
Water Treatment & HVAC:
Building HVAC water systems: Extended lever for easy operation, 5% higher energy efficiency;
WWTP sludge transport: 316 SS resists chloride corrosion, 3-year trouble-free operation.
(B) Customer Benefits
Safety Compliance: CE-PED, ASME certified, meeting ISO 9001 and TSG D0001 to reduce compliance risks;
Cost Optimization: Streamlined flow saves ~8,000kWh/year, 18-month maintenance cycles cut total cost by 25%;
Customization: Non-standard flanges (DIN/JIS), special seals (EPDM/FFKM), and ATEX-explosion proof actuators available.