1. Freeman Valve's Zirconium 702 valves offer the following significant advantages:
1.1 Freeman Valve's Zirconium 702 valves exhibit exceptional corrosion resistance, including resistance to pitting and crevice corrosion. For example, their resistance to reducing acids (hydrochloric acid, dilute to medium-concentration sulfuric acid, formic acid, etc.) at high temperatures far surpasses that of titanium and Hastelloy.
1.2 Freeman Valve's Zirconium 702 valves are immune to stress corrosion cracking (SCC) in chloride ion environments.
1.3 Freeman Valve's Zirconium 702 valves are resistant to strong alkalis and most organic acids due to the formation of a dense, self-healing passivation film on their surface.
1.4 Freeman Valve's Zirconium 702 valves are resistant to halide ion media. For example, they are less prone to localized corrosion in high-temperature chlorides, brine, and seawater.
1.5 Freeman Valve's Zirconium 702 valves possess excellent weldability.
2. The following precautions should be taken when using Zirconium 702 valves:
2.1 Zirconium 702 valves are not resistant to hydrofluoric acid and free fluoride ions;
2.2 Zirconium 702 valves are not suitable for use with molten strong alkalis or high-temperature, highly oxidizing salts;
2.3 Zirconium 702 valves will cause active corrosion when used with anhydrous chlorine or high-temperature anhydrous chlorides;
2.4 Zirconium 702 valves will experience accelerated corrosion when used with hot concentrated sulfuric acid (concentration >70%);
2.5 The long-term operating temperature of Zirconium 702 valves in air should be ≤300℃.
3. Key Application Areas of Freeman Valve's Zirconium 702 Valves:
3.1 Freeman Valve's Zirconium 702 valves are widely used in hydrochloric acid and sulfuric acid plants: for example, evaporators and heat exchanger piping;
3.2 Freeman Valve's Zirconium 702 valves are widely used in urea plants: for example, ammonium carbamate condensers and reactors;
3.3 Freeman Valve's Zirconium 702 valves are widely used in organic acid systems such as acetic acid and formic acid: for example, synthesis reactors and distillation columns;
3.4 Freeman Valve's Zirconium 702 valves are widely used in chlor-alkali and sodium hypochlorite systems: for example, high-temperature processes containing chloride salts;
3.5 Freeman Valve's Zirconium 702 valves are widely used in high-temperature brine and seawater systems: for example, heat exchanger piping;
3.6 Freeman Valve's Zirconium 702 valves are widely used in... 702 valves have been widely used in high-temperature acidic synthetic pipelines and sterile acid pipelines;
3.7 Freeman Valve's Zirconium 702 valves have been widely used in high-temperature brine pipeline systems.
Design Standard of Zirconium 702 Swing Check Valve:
Design Acc. to ASME B16.34 (ANSI Standard Zirconium 702 Swing Check Valve);
Design Acc. to EN-12516-1/2 (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve).
Test Standard of Zirconium 702 Swing Check Valve:
Test Acc. to API 598 (ANSI Standard Zirconium 702 Swing Check Valve);
Test Acc. to EN 12266-1/2 (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve).
Surface Finishing of Zirconium 702 Swing Check Valve:
All Zirconium 702 Swing Check Valve surface is finely machined to achieve the required roughness and conforms to standard MSS SP-110.
Size of Zirconium 702 Swing Check Valve:
From DN1/4’’ to 48’’ (ANSI Standard Zirconium 702 Swing Check Valve);
From DN8 to DN1200 (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve).
Face to Face of Zirconium 702 Swing Check Valve:
Face to Face Acc. to ASME B16.10 (ANSI Standard Zirconium 702 Swing Check Valve);
Face to Face Acc. to EN 558-1 (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve).
Pressure Rating of Zirconium 702 Swing Check Valve:
ANSI Class 150 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
ANSI Class 300 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
ANSI Class 600 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
ANSI Class 800 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
ANSI Class 900 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
ANSI Class 1500 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
ANSI Class 2500 Zirconium 702 Swing Check Valve (ANSI Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 16 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 25 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 40 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 63 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 100 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 160 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 250 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 320 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve);
EN 1092 PN 400 Zirconium 702 Swing Check Valve (EN Standard Zirconium 702 Swing Check Valve, DIN Standard Zirconium 702 Swing Check Valve).
Working Temperature of Zirconium 702 Swing Check Valve:
Please refer to the "Temperature and Pressure Curve of Zirconium 702 Swing Check Valve" for temperature and pressure changes.
Ends Connection of Zirconium 702 Swing Check Valve:
ANSI Flange Ends Zirconium 702 Swing Check Valve;
ANSI Integral Flange Ends Zirconium 702 Swing Check Valve;
ANSI Welded Flange Ends Zirconium 702 Swing Check Valve;
Butt Weld (ASME B16.25) Ends Zirconium 702 Swing Check Valve;
Butt Weld x ANSI Flange Ends Zirconium 702 Swing Check Valve;
EN 1092 Flange Ends Zirconium 702 Swing Check Valve;
EN 1092 Integral Flange Ends Zirconium 702 Swing Check Valve;
EN 1092 Welded Flange Ends Zirconium 702 Swing Check Valve;
Butt Weld (EN 12627) Ends Zirconium 702 Swing Check Valve;
Butt Weld (ISO 1127) Ends Zirconium 702 Swing Check Valve;
Butt Weld x EN 1092 Flange Ends Zirconium 702 Swing Check Valve;
Male NPT (ASME B1.20.1) Ends Zirconium 702 Swing Check Valve;
Male BSPP (ISO 228-1) Ends Zirconium 702 Swing Check Valve;
Male BSPT (ISO 7-1) Ends Zirconium 702 Swing Check Valve;
Male NPT x Female NPT Ends Zirconium 702 Swing Check Valve;
Male BSPP x Female BSPP Ends Zirconium 702 Swing Check Valve;
Male BSPT x Female BSPT Ends Zirconium 702 Swing Check Valve;
Male NPT x Long Butt Weld (+100 mm) Ends Zirconium 702 Swing Check Valve;
Male BSPP x Long Butt Weld (+100 mm) Ends Zirconium 702 Swing Check Valve;
Male BSPT x Long Butt Weld (+100 mm) Ends Zirconium 702 Swing Check Valve;
Female NPT (ASME B1.20.1) Ends Zirconium 702 Swing Check Valve;
Female BSPP (ISO 228-1) Ends Zirconium 702 Swing Check Valve;
Female BSPT (ISO 7-1) Ends Zirconium 702 Swing Check Valve;
Socket Weld (ASME B16.11) Ends Zirconium 702 Swing Check Valve;
Socket Weld (EN 12760) Ends Zirconium 702 Swing Check Valve;
Female NPT x Socket Weld Ends Zirconium 702 Swing Check Valve;
Female BSPP x Socket Weld Ends Zirconium 702 Swing Check Valve;
Female BSPT x Socket Weld Ends Zirconium 702 Swing Check Valve;
Butt Weld (ASME B16.25) Ends Zirconium 702 Swing Check Valve;
Butt Weld (EN 12627) Ends Zirconium 702 Swing Check Valve;
Female NPT x Butt Weld Ends Zirconium 702 Swing Check Valve;
Female BSPP x Butt Weld Ends Zirconium 702 Swing Check Valve;
Female BSPT x Butt Weld Ends Zirconium 702 Swing Check Valve;
Female NPT x Long Butt Weld (+100 mm) Ends Zirconium 702 Swing Check Valve;
Female BSPP x Long Butt Weld (+100 mm) Ends Zirconium 702 Swing Check Valve;
Female BSPT x Long Butt Weld (+100 mm) Ends Zirconium 702 Swing Check Valve;
Long Butt Weld (+100 mm Weld Stub) Ends Zirconium 702 Swing Check Valve.
CE Marking of Zirconium 702 Swing Check Valve:
CE Marking is Available to Zirconium 702 Swing Check Valve with a Diameter of DN32 or Larger.
Chemical Composition of Zirconium 702 Swing Check Valve:
For the Chemical Composition of Zirconium 702 Swing Check Valve, please refer to EN 10204 Type 3.1 certificate.
Mechanical Properties of Zirconium 702 Swing Check Valve:
For the Mechanical Properties of Zirconium 702 Swing Check Valve, please refer to EN 10204 Type 3.1 certificate.
Certificate of Zirconium 702 Swing Check Valve:
All Zirconium 702 Swing Check Valve will be delivered with EN 10204 Type 3.1 Certificate.
Approvals of Zirconium 702 Swing Check Valve:
MSS SP-110 Certified of Zirconium 702 Swing Check Valve;
NACE MR 0175 Certified of Zirconium 702 Swing Check Valve
API 607 Fire Safe Certified of Zirconium 702 Swing Check Valve;
ISO 9001 Certified of Zirconium 702 Swing Check Valve;
PED Certified of Zirconium 702 Swing Check Valve.
Available Upon Request of Zirconium 702 Swing Check Valve:
NACE MR0175 is available upon request of Zirconium 702 Swing Check Valve;
ATEX is available upon request of Zirconium 702 Swing Check Valve;
TA-LUFT is available upon request of Zirconium 702 Swing Check Valve;
SIL is available upon request of Zirconium 702 Swing Check Valve;
Degreasing is available upon request of Zirconium 702 Swing Check Valve;
Fire Safe is available upon request of Zirconium 702 Swing Check Valve;
Stem Extension is available upon request of Zirconium 702 Swing Check Valve;
Double Block and Bleed is available upon request of Zirconium 702 Swing Check Valve.
Swing Type 
Lift Type (Piston Type)