Standard Safety Valve - AL-4 Series | Armstrong | Americas

Standard Safety Valve – AL-4 Series

Standard Safety Valve – AL-4 Series

Product Specifications

Model AL-4 Standard AL-4 Mid. Pressure AL-4T Standard AL-4T Mid. Pressure AL-4S AL-4ST
Size 2-1/2″ (65 mm)
3″ (80 mm)
4″ (100 mm)
5″ (125 mm)
6″ (150 mm)
2-1/2″ (65 mm)
3″ (80 mm)
4″ (100 mm)
5″ (125 mm)
6″ (150 mm)
2-1/2″ (65 mm)
3″ (80 mm)
4″ (100 mm)
5″ (125 mm)
6″ (150 mm)
2-1/2″ (65 mm)
3″ (80 mm)
4″ (100 mm)
5″ (125 mm)
6″ (150 mm)
2-1/2″ (65 mm)
3″ (80 mm)
4″ (100 mm)
2-1/2″ (65 mm)
3″ (80 mm)
4″ (100 mm)
Connection Type JIS 10K FF Flanged JIS 16K FF Flanged JIS 10K FF Flanged JIS 16K FF Flanged JIS 10K FF Flanged
JIS 16K FF Flanged
JIS 20K FF Flanged
JIS 10K FF Flanged
JIS 16K FF Flanged
JIS 20K FF Flanged
Body Material Grey Cast Iron Grey Cast Iron Grey Cast Iron Grey Cast Iron Grey Cast Iron
Carbon Steel
Stainless Steel
Grey Cast Iron
Carbon Steel
Stainless Steel
Maximum Operating Pressure 0.05-1.0MPa @ 220℃ 0.05-1.5MPa @ 220℃ 0.05-1.0MPa @ 120℃ 0.05-1.5MPa @ 120℃ 0.05-2.0MPa @ 220℃ 0.05-2.0MPa @ 120℃

Standard Safety Valve – AL-4 Series

The AL-4 Series can be used as a safety valve after a pressure reducing valve, and can be used in small boilers and various pressure vessels. The recommended application is steam. Metal-to-metal seals provide excellent corrosion resistance.

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