EPDM seat  butterfly valve one stem with pin

I)Standard:
1.Design standard conform to: MSS SP-67, API609, EN593
2.Connection flange conform to: DIN PN10/16/25, ANSI B16.1, BS4504.

3.Top flange conform to: ISO 5211.
4.Face to face conform to: API609, ISO5752 series 20, BS5155.
5.Test standard conform to: API598.

II)Design characters:
1. Rubber backed seat with stable valve torque.
2. Grooved sleeve design to achieve stable positioning
3. Simple construction, small in size, light in weight. Easy disassembling, installation and maintenance
4. Minimized operating torque. Lever, gear, pneumatic and electric actuators can be chosen.
5. Special design, high flow rate and low flow resistance.
6. Suitable medium: water, sewage, sea water, air, steam, food, medicament, oils, acids, alkalis, salts etc. No leakage under the rated pressure.

III)Material List: