CAST iron :  Flanged. . . 1/2” to 16” DN15–DN400

ASTM A48 Class 35C

or ASTM A126 Class B

DUCTILE iron SG IRON :  Screwed . . . 1/2” to 2” DN15–DN50

ASTM A395: 65-45-12

Flanged . . . 1/2” to 6” DN15–DN150

ASTM A395: 60-40-18

or ASTM A395

CASTSTEEL :  Flanged . . . 1/2” to 4” DN15–DN100

ASTM A216 WCB

BRONZEGUNMETAL :  Screwed . . . 1/2” to 3” DN15–DN80

ASTM B62

or ASTM B584 Alloy 836

Flanged . . . 1/2” to 4” DN15–DN100

STAINLESSSTEEL :  Screwed . . . 1/2” to 3” DN15–DN80

Flanged . . . 1/2” to 6” DN15–DN150

ASTM A743: CF-8M

or ASTM A351: CF-8M

Diaphragm valves operate differently to traditional gate, ball, and globe valves. A diaphragm made from rubber, thermoplastic, or Teflon is pressed against the seating section of the pump body to restrict flow. Maintenance can be carried out without removing the valve body from its installed position.