®
FLOW METERING EQUIPMENT
B-Plus
®
Specifications
Sizes 1/2" to 12"
Applications: Liquids and gases Sizes: 1/2" to 12"
Features:Benefits:
Preso’s B-Plus balancing valves are Venturi style, manual balancing
Accuracy: ±2%
valves offered in sizes from 1/2" to
12". The B-PlusfeaturesPreso’s“Low-Loss”Venturidesign, unsurpassed in the industry for low permanent pressure loss andlowenergyconsumption. The B-Plus installs in any position with minimum upstream and downstream piping requirements. TheB-Plus is available with sweat, FNPT, flanged and grooved end connections. Many options are available: pressure and temperature ports, quick-disconnect fittings, readout gages and transmitters.
Turndown Ratio: 10:1 uncalibrated B-Plus 1/2" to 2"Pressure Rating: 230 PSIG (1585 kPa) Temperature Rating: 245 °F (118 °C) BodyBrass #58 UNI-5705-65 Seats & SealsNBR, Viton Materials of Construction:
® , PTFE Ball & StemChrome plated brass #58 ConnectionsFNPT, sweat Instrument ValvesBrass check with SS stem 1/4" SAE M
Low-loss Venturi designDifferential readout ports
Positive shut-off ball valve manufacturers
Handle with memory lock mechanismAccuracy: ±2% Turndown ratio: 10:1 uncalibrated
Low operating costs
Easy to operate
Installs in any position
B-Plus 2-1/2" to 12" 125# Models Press & Temp Ratings
1 : 200 PSIG @ 150 °F (1378 kPa @ 65 °C), or 125 PSIG @ 450 °F (861 kPa @ 230 °C) 250/300# Models Press & Temp Ratings Materials of Construction: Body Cast iron ASTM A126 Gr B
Seats & Seals PTFE
Ball & Stem Stainless steel
Connections Flanges (FF) per ASME B16.1, or
125# Grooved (flange mate coupling) Instrument Valves Brass check with SS stem 1/4" SAE M
1 : 640 PSIG @ 100 °F (4410 kPa @ 37 °C), or 450 PSIG @ 640 °F (3100 kPa @ 338 °C) Materials of Construction: Body Ductile iron A536 Gr 65-45-12
Seats & Seals PTFE
Ball & Stem Stainless steel
Connections Flanges (RF) per ASME 16.42 Instrument Valves Brass check with SS stem 1/4" SAE M
D E R A E F E T E D I N I C N A C . R I S 6 O 5 1 9 8 Instrument connection options will affect pressure & temperature limits. Refer to Part Number Construction on page 3. 6 1 A : . 2 F I L E N For higher pressure and temperature, consult factory. 1-800-632-7337 www.preso.com