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.
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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.
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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″ | 1/8″ | 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; Swagelok VCO®; swagelok VCR®; SAE |
| 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″ | 50 | 9 | 4.3 | 1.0E-02 | 14.3 | NPT | BSPP; 150# Flange; 300# Flange; Swagelok VCO®; swagelok VCR®; SAE |
| 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 Regulators
1/16" to 1/4"
up to 10,000 psig / 690 bar(g)
General Service
Back Pressure Regulators
1/4" to 1"
up to 2500 psig / 172 bar(g)
Industrial Service
Back Pressure
Valves
1.5" to 4"
up to 1000 psig / 69 bar(g)
Electronic
Back Pressure Regulators
1/4" to 4"
up to 5000 psig / 344 bar(g)
