Executive standards
Design standard: API 609, GB/T 12238
Structure length standard: API 609, GB/T 12221
Flange standard: ASME B16.5, HG/T 20592, GB/T 9113, EN1092-1
Test standards: API 608, GB/T 13927, GB/T 26480
Pressure temperature rating: ASEM B16.34, GB/T 12221
Application industry:
It is used in petroleum, petrochemical, natural gas, electric power, water conservancy and other industries.
technical parameter
Diameter range: 2 '~48', DN50~DN1200;
Pressure range: PN16~PN25, CL150~CL300;
Materials: nodular cast iron, carbon steel, austenitic stainless steel, etc
Temperature range: F46 fluorine lined valve seat: - 29 to 150 ℃;
EPDM EPDM valve seat: - 29 to 120 ℃;
NBR NBR rubber valve seat: - 20 to 93 ℃;
FKM fluororubber valve seat: - 29 to 180 ℃;
Connection mode: clamp, flange, lug, etc
Drive mode: manual, pneumatic, electric, hydraulic, pneumatic hydraulic linkage, etc.
Characteristics of midline butterfly valve
Fluorine lined midline butterfly valve
A. Fluorine lined midline butterfly valve is a high performance valve with high cleanliness, which will not cause secondary pollution to the medium. It is anti-corrosion, wear-resistant, pollution-free and anti-static.
B. The valve shaft seal at both ends of the butterfly plate and valve seat adopts the structure of '0' ring+elastic isolation bushing+butterfly spring, which ensures that no medium enters the valve seat, and has the function of automatic compensation.
C. The valve body adopts the two-part butterfly plate and the valve shaft adopts the split type with special-shaped holes, and the valve seat adopts the replaceable or convenient for debugging, maintenance and replacement.
D. ISO standard connecting disc is designed to connect pneumatic, electric, hydraulic and other actuators to achieve automatic operation.
Rubber midline butterfly valve
A. After finishing, the outer diameter of the butterfly plate and the dimension of the butterfly plate face have a high tolerance range. The small plate edge is a polished hemispherical surface, which can reduce the operating torque.
B Multiple choices of valve seat sealing surface: EPDM, NBR, FKM.
C. The connection mode of butterfly plate and valve shaft can be divided into two types: small diameter adopts small modulus spline connection structure; The large diameter uses a two-part pin free structure to connect the upper and lower valve shafts through the intermediate connecting rod. These two types of valve shafts have high structural strength and are stable and reliable in use.
D. ISO standard connecting disc is designed to connect pneumatic, electric, hydraulic and other actuators to achieve automatic operation.