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 industrial BD Series back pressure valves are designed for applications requiring larger sizes and higher throughput. They are available in port sizes from 1.5″ up through 4″ standard, with custom sizes on request. They are designed using the same precision technology as the smaller back pressure regulators, but we often use the term “valve” when referring to the larger sizes.

The BD Series has external elbows attached to the ports on the bottom plate to save significant space compared to the side-ported cylindrical designs of our smaller regulators. Metal elbows are welded to the valve bodies while polymer elbows are glued. Standard elbows are NPT and there are options for BSPP, flanges and Tri Clamp.

BD valves are used for gases, liquids, and mixed phase applications and are particularly popular for fuel cell testing, biogas production, pump bypass pressure control, and other industrial 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.


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

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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″ 1/4″ 45 (SS);
75 (AA);
120 (BDM)
9.5 (SS); 7.6 (AA) 3.9 (SS); 3.7(AA) 1.0E-02 13 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 28
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″ 1/4″ 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)
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