SENTRY™ XP Series High Pressure Dampeners

Pulsation Dampeners to 15,000 psi.

Engineered for high performance and reliability with 316L stainless steel solid shell housings and ACME threaded caps. Now in sizes ranging from 8 to 122 cubic inch (0.13L to 2.0L) with pressure ratings from 2,000 to 15,000 psi (137.8 to 1,034.2 bar), including models using PTFE bellows. Choose from a wide range of inlet options, including Blacoh’s exclusive flow through inlet design that effectively removes both hydraulic and acoustic pulses in high pressure applications.

high pressure dampeners

The New Generation XP

Sizes up to 122 cubic inch (2.0L) and pressure ratings to 15,000 psi (1,034.2 bar).

With innovations in design, the new generation XP is more extreme in more ways than one. Blacoh’s new generation SENTRY XP pulsation dampeners offer better performance and more options for high pressure applications. New larger capacity models up to 122 cubic inches (2.0L) and pressure ratings up to 15,000 psi are ideally suited for metering and dosing applications typical in the oil and gas industry.

New cap design and improved sealing performance.

The PTFE bellows in the new XP is oriented with the inside wetted and an internal support disk, allowing PTFE models to be rated up to 15,000 psi. The cap and disk are the only wetted components in the new bellows design. In applications that require Alloy 20 or Hastelloy C, the larger non-wetted housing is constructed of 316L stainless steel and only the smaller wetted components use the more costly alloy. The new generation XP also features ACME threaded caps and improved sealing performance. The seal is created by a taper in the housing coming in contact with a matching tapered cap. The taper design allows the cap and housing to come together with zero clearance.

PTFE Tough

Now available on all models up to 15,000 psi (1,034.2 bar), Blacoh’s unique PTFE bellows have an excellent flex life, are compatible with virtually all chemicals and solvents, and can withstand temperatures up to 220°F (104°C).

High Frequency Solved

SENTRY XPH flow through models are engineered to remove high frequency pulses greater than 15 Hz, as well as low frequency pulses. This unique flow through design allows the XPH model to effectively remove both hydraulic pulses and acoustic pulses for exceptionally smooth pressure and flow. With a properly sized XPH dampener, residual pulsation of less than 1% can be achieved.


Models from 8 cubic inch (0.13L) to 122 cubic inches (2.0L).

Pressure ratings from 2,000 to 15,000 psi (137.8 to 1,034.2 bar) with optional pressure gauge.

PTFE bellows or elastomer bladders in Buna-N, EPDM and Viton.

Corrosion resistant 316L stainless steel solid shell housings with zero clearance ACME threaded caps.

Optional Alloy 20 or Hastelloy C wetted caps with PTFE bellows.

NPT, BSP, socket weld and flow through inlets, ANSI and DN flanges, and Autoclave.

ATEX and CRN specific models.

Model Sizes

8 cubic inch (0.13L)
12 cubic inch (0.2L)
24 cubic inch (0.39L)
36 cubic inch (0.59L)
60 cubic inch (0.98L)
91 cubic inch (1.5L)
122 cubic inch (2.0L)


Request quotes and drawings online.


Build and quote the right model for your application.

SENTRY XPH Flow-Through Model
SENTRY XPH Flow Through Model