SDI Series Diaphragm Dosing Pumps

Description

Volumetric double-diaphragm spring-return dosing pump

The SDI series multilayer diaphragm dosing pumps comply with API 675 mechanical and operational standards. They also meet ATEX requirements and can be installed in explosive atmospheres.

The mechanism is based on an internal worm drive fully immersed in an oil bath, with the ability to connect to other hydraulic components regardless of stroke length and number, enabling assemblies with multiple hydraulic elements. Stroke adjustment can be performed both at standstill and during operation, manually or automatically via an actuator controlled by a 4–20 mA signal; bus interface; or pneumatically.

Accuracy is ±1 % within 10–100 % of rated capacity. The hydraulic circuit features a built-in relief valve to protect the diaphragm from overpressure. A distinctive feature of this pump is its special multilayer diaphragm and reliable diaphragm-rupture detection system.

A wide selection of wetted materials is available: SS 316L; PVC; PP; PVDF; PTFE; other materials on request.