FLOWGUARD™ Pulsation Dampeners
Pulsation Dampeners
Flowguard pulsation dampeners (also known as dampers) are hydro-pneumatic devices designed to remove pulsations, vibrations, and noise caused by positive displacement pumps in upstream production surface systems. Using pulsation dampeners on positive displacement-pumped systems results in improved instrument readings, increased pump life, lower maintenance costs, and lower running costs. Pulsation dampeners eliminate the possibility of pipe fracture caused by vibration while safeguarding personnel from the risk of leaks.
Benefits Include:
- Ensure a continuous, steady flow
- Remove pressure fluctuations and surges
- Reduce overload on pump motors and gearboxes in long runs of pipe
- Stop pipe vibration and shaking
- Reduce noise
- Mitigate pump over-delivery
- Prevent cavitation caused by poor suction conditions, long suction lines, etc.
Pulsation dampeners operate by employing a small volume of gas, usually nitrogen, contained within a flexible membrane fitted inside a non-corrosive shell. Each time a pulse comes from the pump, part of the pulse goes into the damper and the gas is compressed slightly. As the flow decreases the pulse stored in the damper will be pushed back into the line. The result is a smooth flow which will keep pressure fluctuations within the required limits (level of damping).
Features of Flowguard Pulsation Dampeners:
- Unrestricted inlet port (no poppet valve) for improved damping efficiency
- Welded flange connections as well as BSP & NPT threaded
- Very simple gas charging system
- One-piece, molded membranes (no glued joints) on all standard sizes
- In-line (2 port) available as an option with a choice of port orientation
- Easy-to-service membrane can be changed without removing damper from the line
- Fully coded and approved welding with 100% x-ray, if required
CoorsTek dampeners are exceptionally durable. Superior, uncomplicated, and efficient designs ensure levels of performance unmatched by traditional adapted hydraulic accumulators. The basic, yet rugged, construction makes them economically priced and easy to maintain. A broad range of certified high-quality dampeners are available to suit our customers’ needs and conform to internationally recognized pressure vessel codes. Our standard housings are made of non-corrosive 316 stainless steel, polypropylene, or of special alloys like titanium, Hastelloy®, Monel™, etc. The membrane is available in 10 different types of rubber or PTFE (Teflon®) bellows or diaphragm. Pulsation dampeners may be supplied with full material certification (ASME Coded), if required.
FLOWGUARD Pulsation Damper Series Overview:
HG Series – High-Pressure Bladder Type Pulsation Dampers
The HG Series is purpose-built for high-pressure applications, delivering robust performance with customizable shell and membrane materials. Designed to international standards with optional ASME U Stamp and third-party approvals, it features an open-top construction for quick bladder replacement. Multiple connection options and complete documentation ensure operational ease. Proven across global installations, it ensures precise metering and smooth flow from reciprocating pumps.
FG Series – Bladder Type Pulsation Dampers
Engineered for flexibility, the FG Series offers tailored pulsation dampers with a wide range of shell and membrane materials to suit demanding process conditions. Built to PD5500 or ASME VIII standards, each unit ensures reliable performance with optional ASME U Stamp certification. The open-top design allows easy maintenance, while various connection types and full documentation support make integration seamless.
FB Series – Bellows Type Pulsation Dampers
Designed for harsh environments, the FB Series uses PTFE or metal bellows to handle aggressive chemicals and extreme temperatures. Its precision-crafted components, including PTFE envelopes and leak-tested metal bellows, deliver long-term reliability. Compatible with various seal materials and connection types, each damper meets PD5500 or ASME VIII standards. With thousands deployed globally, the FB Series ensures efficient flow control and reduced system vibration.
FD Series – PTFE Diaphragm Type Pulsation Dampers
Ideal for chemically aggressive or temperature-sensitive applications, the FD Series features CNC-cut PTFE bellows or precision-welded metal bellows. Available with single or double seals and a wide range of O-ring materials, it offers full PTFE-wetted designs for superior chemical resistance. Built to PD5500 or ASME VIII standards, the FD Series ensures dependable flow damping and minimal vibration across various industries.
DS Series – 316 Stainless Steel Bladder Type Dampers
The DS Series provides a robust, maintenance-friendly solution with a top-access design for easy bladder replacement. Constructed from 316 stainless steel and compatible with a range of elastomers, it’s ideal for general-purpose applications. Available in BSP or NPT threads, it delivers reliable performance in smoothing flow and enhancing metering accuracy.
DP/DV Series – Plastic Shell Bladder Type Dampers
With corrosion-resistant polypropylene (DP) or PVC (DV) shells, this series is ideal for chemical service. Optional materials like Nylon and PVDF are available for specialty needs. Designed with top-access bladder replacement and a wide choice of membranes and connections, these dampers combine simplicity with dependable flow control performance.
FG/TD Series – CIP Hygienic Transfer Pulsation Dampers
The FG/TD Series is engineered for hygienic processes in food, beverage, pharmaceutical, and cosmetic industries. Featuring a twin-port, CIP-compatible design, it prevents product stagnation and promotes clean-in-place efficiency. Customizable in elastomer type, surface finish, and connections, it ensures sanitary operation and contamination protection through a specialized transfer fluid system.
Contact flowguard@coorstek.com today to discuss your pulsation damper needs.