BD Series Back Pressure Valves for High Flow Applications | Equilibar

BD Series Back Pressure Valves

Insdustrial Service Back Pressure Valves For High Flow Applications

Equilibar’s BD Series back pressure valves with pipe sizes from 1.5″ up through 4″ handle higher flow applications. They use the same precision technology as our small back pressure regulators, but we use terminology “valve” in this case to denote the larger sizes.

The BD Series has external elbows attached to the bottom to save significant space compared with side-ported cylindrical designs. Stainless steel and aluminum valve bodies are welded to commercial pipe elbows, while PVC valves are glued to commercial elbows. Flanges can be optionally welded to the elbows if desired. Aluminum elbows are square in shape while stainless steel and PVC are rounded.

BD valves are used for gases, liquids, and mixed phase applications. For liquid applications, an application engineer will discuss the downstream piping design to make sure that water hammer (resonance) does not cause an issue.


Request Pricing Download a Brochure

back pressure valve with manual pilot air regulator
BD-Dimensional-Schematic

Choose Your Back Pressure Regulator

Our Product Selector allows you to search based on your process parameters. TRY IT NOW
Or always feel free to contact an engineer to discuss your needs.

Contact Us

  • If multiple fluids or phases, list all.
  • This field is for validation purposes and should be left unchanged.

Metal High Flow BD Valve Details – 316 Stainless Steel (SS) standard / Anodized Aluminum (AA) optional

Model Inlet / Outlet Port Reference Port Max Pressure* Valve Takeout (DIM A) Height** (DIM B) Cv Range (Precision) Available End Fittings
psig inch Min Max Std Available
BD-12* 1.5″ 1/8″ 45 (SS);
75 (AA);
120 (BDM)
9.5 (SS); 7.6 (AA) 3.9 (SS); 3.7(AA) 1.0E-02 14.3 NPT  BSPP
150# Flange;
300# Flange; Triclamp
BD-16* 2″ 70 (SS);
50 (AA);
150 (BDM)
11. (SS); 9. (AA) 4.1 (SS); 4.3 (AA) 3.0E-02 30.2
BD-24* 3″ 1/4″ 45 (SS);
30 (AA);
85 (BDM)
13 (SS); 12.5 (AA) 5.3 (SS); 5.9 (AA) 6.0E-02 60
BD-32 4″ 20 (SS);
20 (AA)
20 8.1 1.5E-01 160
*BD-12,16, and 24 stainless steel valves also come in BDM styles for higher pressure. Contact an application engineer or download the brochure for more details.
**Height is measured from top surface of regulator to the center of pipe elbow. Does not include 3″ manual set point regulator.

Polymer High Flow BD Valve Details – PVC

Model Inlet / Outlet Port Reference Port Max Pressure Valve Takeout (DIM A) Height* (DIM B) Cv Range (Precision) Available End Fittings
psig (inch) Min Max Std Available
BD-12 1.5″ 1/8″ 30 9 4.3 1.0E-02 14.3 NPT BSPP
BD-16 2″ 30 11 5.1 3.0E-02 30.2
BD-2 4 3″ 1/4″ 20 15 8.8 6.0E-02 60
BD-32 4″ 20 20 9.6 1.5E-01 160
*Height is measured from top surface of regulator to the center of pipe elbow. Does not include 3″ manual set point regulator.

Other Equilibar Back Pressure Products:

research series back pressure regulator Research Series Back Pressure Regulators 1/16" to 1/4" up to 10,000 psig / 690 bar(g)
general service back pressure regulator GS series General Service Back Pressure Regulators 1/4" to 1" up to 2500 psig / 172 bar(g)
industrial service back pressure valve BD seriesIndustrial Service Back Pressure Valves 1.5" to 4" up to 150 psig / 10 bar(g)
image of GS back pressure regulator with QPV pilot regulatorElectronic Back Pressure Regulators 1/4" to 4" up to 5000 psig / 344 bar(g)
Equilibar News
Oblique view of ultra-sensitive back pressure regulator

COVID-19 Update: Equilibar working with ventilator designers to increase access to component parts

Since Friday March 20, 2020, Equilibar has focused on working to modify the design of our fluid control valves to enable them to serve as building blocks for medical ventilator systems.  Our technical team has made rapid progress.  Based on collaboration with bio-engineering and medical experts, we believe we have developed designs that can contribute Read More

Read More