America Blackmer BV Series ¾”, 1″, 1¼”, 1½”, 2″ Bypass Valve
Brand: Blackmer (US)
Model: BV Series
Specification: 0.75″
Product Code: BMBVBV
Material: Ductile Iron
Media: LPG
Primary Classification: Compressor, Hydrocarbon Pump
Secondary Classification: Hydrocarbon Pump
Description
Blackmer BV Series Bypass Valve – Precise Pressure Protection Device for Pipelines
Blackmer differential bypass valves are designed to protect pumps and system components from excessive pressure damage, and no LP gas pump installation is complete without one.
Blackmer offers five different models that provide full-flow pressure control to 250 U.S. gpm (946 lpm) at 120 psid (8.27 Bar). Installation is easy with NPT tapped ports in sizes from 3/4″ to 2″. All models are suitable for both LP gas and anhydrous.
Operation:
Blackmer valves provide exceptionally close pressure control, even under widely varying bypass flow conditions. The performance curve in Figure 4 shows how a Blackmer valve maintains a virtually constant pressure of 100 psi (6.89 Bar) even as the volume being bypassed rises from 10 gpm to 100 gpm (38-378 lpm). Although the curve is that of a BV11/2″ valve, the precision it demonstrates is typical of any Blackmer valve.
Blackmer differential bypass valves are designed to protect pumps and system components from excessive pressure damage, and no LP gas pump installation is complete without one. Blackmer offers five different models that provide full-flow pressure control to 250 U.S. gpm (946 lpm) at 120 psid (8.27 Bar). Installation is easy with NPT tapped ports in sizes from 3/4″ to 2″. All models are suitable for both LP gas and anhydrous ammonia service.
Blackmer bypass valves have no small, easily plugged, sensing passages; and with only two moving parts, their operation is simple and reliable. They open precisely at the preset spring pressure, and they close smoothly and quietly, thanks to a patented dash-pot design. As shown in Figure 5, a small chamber in the valve stem fills with liquid when the valve opens. This liquid then provides a hydraulic cushion preventing the valve from slamming shut if pressure is suddenly released. It also minimizes chatter and valve seat wear when pressures hover around the crucial limit.
Choose a model:
| 型号 | 用途 |
|---|---|
| BV ¾ (¾″NPT锥螺纹接口) | 这两种阀常被用于钢瓶灌注系统，亦可配用在1-1¼″或1-1½″型的百马泵上。 |
| BV 1 (1″NPT锥螺纹接口) |
|
| BV 1¼ (1¼″NPT锥螺纹接口) | 这两种阀常被用在槽车和较小的气库工厂系统，亦可与2″或3″型的百马泵相配用。 |
| BV 1½ (1½″NPT锥螺纹接口) |
|
| BV 2 (2″NPT接口法兰) | BV 2型已广泛地用在运输槽车上或较大的气库工厂系统，可与3″和4″百马泵相配用。 |
Blackmer Bypass Valve BV Series Flow:
| 型号 | 最大流量 加仑/分(升/分) | ||||
|---|---|---|---|---|---|
| 20PSI (138 KPa) | 50PSI (345 KPa) | 80PSI (552 KPa) | 120PSI (827 KPa) | ||
| BV¾ (¾"NPT螺纹接口) BV1 (1"NPT螺纹接口) | 25 (95) | 40 (151) | 50 (189) | 60 (227) | 用于钢瓶灌注系统,亦可配用在1-1/4"或1-1/2"的百马泵上 |
| BV1-¼ (¼"NPT螺纹接口) BV1-½ (½"NPT螺纹接口) | 60 (227) | 80 (303) | 100 (379) | 125 (473) | 用于槽车及较小的气库工厂系统,亦可配用在2"或3"的百马泵上 |
| BV2 (2"NPT配套法兰) | 150 (568) | 180 (681) | 220 (833) | 250 (946) | 用于运输槽车上或较大的气库工厂系统,亦可配用在3"或4"的百马泵上 |
