API 675 double diaphragm pumps

Our API 675 double diaphragm pumps are a cost-effective solution for our customers’ low flow rate or low pressure injection applications. The benefits of an API 675 diaphragm pump in low flow/pressure applications include easy flow control through manual/electric stroke adjustment.

Typical API 675 Applications

Typical process pumping applications include scale and corrosion inhibitor injection, biocide, oxy scavenger, and many other chemical injection operations. However, if you require higher flow/pressure pump skid packages, then visit our API 674 page.

Technical Overview

Our API 675 double diaphragm pump units are generally air motor, electric motor, or hydraulically driven. We design and manufacture for all hazardous area operating environments including ATEX Zone I and Zone 2, NORSOK, CSA and CRN.

These controlled-volume pumps feature an adjustable stroke which is controlled in line with injection requirements. The equipment is generally skid or crash frame mounted. Crash frames are popular as they offer a good balance of protection for the equipment, low unit weight, and good access to components. Whereas pump skids offer maximum weight saving and all-round access to the components.

Talk with us about API 675 Double Diaphragm Pumps

We are an experienced designer and manufacturer of API 675 pump packages for challenging applications and locations. In fact, Calder-built units are operating in some of the harshest environments around the world. To talk with us about your application, please call +44 1905 751790 or email sales@calder.co.uk.

The API (American Petroleum Institute) is a standards-setting organisation.

  • Electric, pneumatic, or hydraulic drive.
  • Skid, crash frame or container.
  • Environmental enclosure.
  • Manual or automatic adjustment.
  • Tubing in 316 stainless steel, 6mo, Duplex.
  • Integral storage tank.
  • Diaphragm rupture detection system.
  • Calibration pot.
  • Vibration monitoring.
  • High accuracy feed rate.
  • Ideal for hazardous, corrosive, or high temperature fluids.
  • Compact, lightweight pump units.
  • In-house design, build and test.
  • Pressure transmitter.
  • Pressure gauge.
  • Flow meter.
  • Discharge damper.
  • Discharge PSV.
  • Suction strainer.