K11450 Reid Vapor Pressure Bath, 4-Unit


Test Method
Vapor pressure is a critical factor in the handling and performance of liquid petroleum and liquefied petroleum gas (LPG) products. The vapor pressure of automotive gasolines is subject to governmental regulation for pollution control purposes.

Features and Benefits
• Conforms to ASTM D323, D1267 and related specifications

• Free standing or flush-mount benchtop installation

• Microprocessor programmable high accuracy temperature control


K11450 Reid Vapor Pressure Bath, 4-Unit
Constant temperature water baths designed for Reid Vapor Pressure determinations of liquid petroleum products and liquefied petroleum gases (LPG). Immerses vapor pressure apparatus at the proper depth per ASTM specifications. Controls bath temperature with 0.2F (0.1C) precision. Microprocessor PID control provides quick temperature stabilization without overshoot, and the bath is protected by an overtemperature control circuit that interrupts power should bath temperature exceed a programmed cut-off point. Dual LED displays provide actual and setpoint temperature values in C/F format. Communications software (RS232, etc.), ramp-to-set and other enhanced features are available as extra cost options. Contact your Koehler representative for information. Double-wall construction with fiberglass insulated stainless steel tank. A sturdy 1" (25mm) flange permits flush-mount benchtop installation for easy access to the bath interior. Built-in holders suspend test cylinders at the required depth. Equipped with overflow stand pipe/drain.

Test apparatus for liquid products (ASTM D323) requires:
Test Cylinders, one or two-opening type
Pressure Gauges
Constant Temperature Bath
Bath Thermometer
Transfer Connection
Manometer Adapter

Test apparatus for liquefied petroleum gases (ASTM D1267) requires:
Test Cylinders, two-opening type
Bleeder Valve Assemblies
Pressure Gauges
Constant Temperature Bath
Bath Thermometer
Flexible Tubing

Conforms to: ASTM D323, D1267; GPA 2140; IP 69, 161; ISO 3007, 4256; DIN 51616, 51754; FTM 791-1201

Capacity: 1 to 4 vapor pressure apparatus, one-opening or two-opening type

Temperature Control Stability: 0.2F (0.1C)

Maximum Temperature: 212F (100C)

Bath Medium: 13.7gal (51.9L) water

Electrical Requirements
115V 50/60Hz, Single Phase, 18.8A
220-240V 50/60Hz, Single Phase, 9.4A

Dimensions lxwxh,in.(cm)
15x15x36 (38.1x38.1x91.5)
Net Weight: 67 lbs (30.4kg)

Shipping Information
Shipping Weight: 105 lbs (47.7kg)
Dimensions: 14 Cu. ft.

Ordering Information



Product Description

Electrical Requirements


Reid Vapor Pressure Bath, 4-Unit

115V 50/60Hz


Reid Vapor Pressure Bath, 4-Unit

220-240V 50/60Hz




Product Description


ASTM 18F Thermometer
Range: 94 to 108F


ASTM 18C Thermometer
Range: 34 to 42C


ASTM 65F Thermometer
Range: 122 to 176F


ASTM 65C Thermometer
Range: 50 to 80C


Transfer Connection
Consists of threaded brass cup, delivery tube, and sampling tube. Use for removing liquid from the sample container in accordance with ASTM specifications.


Mercury Manometer
Graduated in cm (1mm div.) and inches (0.1" div.). For checking pressure gauge reading up to 15psi.


Manometer Adapter
Attaches to pressure gauge for checking with mercury manometer.


O-Ring Seal
For coupling between air and gas chambers on K11500 and K11201 vapor pressure bombs.


O-ring Seal
For gauge and bleeder valve assembly connections on K11500 and K11201 vapor pressure bombs.


Flexible Tubing
Sulfur-free plastic lined tubing with 1/4" stainless steel and aluminum connectors. For charging LPG test cylinder.


When inquiring about NIST traceable certified thermometers, please refer to the catalog number for the corresponding thermometer and replace the middle three zeros in the catalog number with 004. Example: 251-000-01C ASTM 1C Thermometer would be 251-004-01C ASTM 1C Certified Thermometer.