SR Series Diaphragm Dosing Pumps, Type SD

Description

Spring-return double-diaphragm dosing pump

The SD series double-diaphragm dosing pump is typically used when:

• The dosed fluid contains a small amount of suspended solids
• No leakage is permitted
• The dosed fluid is toxic
• High pressure is required

Each pump is equipped with a standard gearbox system featuring a vertically mounted motor. The gearbox includes a contact-free worm and worm wheel fully immersed in an oil bath.

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. 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.

Additionally, these pumps comply with ATEX standards and can be installed in hazardous areas.

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