Lug type butterfly valve

Standard:
Design standard conform to: MSS SP-67, API609, EN593
Connection flange conform to: DIN PN10/16/25, ANSI B16.1, BS4504, ISO PN10/16,
JIS B2212/2213, BS 10 Table D, BS 10 Table E
Top flange conform to: ISO 5211
Face to face conform to: API609, ISO5752 series 20, BS5155
Test standard conform to: API598

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 i