BLX V100P and V100E Valve Positioners

BLX V100P and V100E Valve Positioners

These pneumatic and electropneumatic positioners incorporate over sixty years of design, manufacturing, and marketing experience, creating one of the most durable, reliable instruments on the market.

  • V100 Specifications
  • V100 Feedback Module
  • V100 Wiring Diagram
  • V100 Spare Parts
  • V100 Brochure
Technical Specifications  
V100P V100E
Input range: 3-15 PSI (20-100kPa) 4-20mA (R1<25ohms)
Supply pressure: <145 PSI (<1MPa) 21.8-145 PSI (0.15-1MPa)
Linearity error: <0.7% f.s. <1.0% f.s.
Hysteresis: <0.4% f.s. <0.6% f.s.
Repeatability: <0.3% f.s. <0.5% f.s.
Pressure Gain:
@87 PSI (600kPa)
750 Pout / Pin
acc. to ISA S75.13
49% Pout / %Pin
Air Capacity: SCFM (SLPM)
@29 PSI (200kPa) 9.5 (270)
@87 PSI (600kPa) 28.3 (800)
@145 PSI (1MPa) 47.1 (1350)
@29 PSI (200kPa) 0.18 (5) 0.2 (5.7)
@87 PSI (600kPa) 0.53 (15) 0.6 (17.0)
@145 PSI (1MPa) 0.88 (25) 1.0 (28.3)
Temperature range: -40° to 185° Fahrenheit
-40° to +85° Celsius
Air connectors: 1/4" NPT (optional G threads)
Gauges: 1/8" NPT (optional G threads)
Cable entry: 1/2" NPT (optional M20x1.5 or PG 13.5)
Ingress & corrosion protection: NEMA 4X and IP66
Coating: Powder Polyester
Weight: 3.5 lbs (1.6kg) 3.8 lbs (1.7kg)
Weight with gauges: 4.0 lbs (1.8kg) 4.2 lbs (1.9kg)
Feedback Spring for 6-30PSI (40-200kPa) input signal
Various cams

Pilot Valves:
Type W1 for better stability and lower bleed. Pressure gain @ 87 PSI = 300
Bleeds 33% less but has 10 % less air capacity than standard valve W3.

Type W2 for faster response and better accuracy. Pressure gain @87 PSI > 1000
Has same air capacity but bleeds 33% more than standard valve W3.

Above specifications are based on Type W3 as the standard pilot valve.

Ordering Codes
Positioner Type Drive Front Cover Indicator Cam
V100 P-Pneumatic D1-Namur 90-90 degree A-arrow C1-Standard-90°
E-Electropneumatic D2-1/2" square 60-60 degree B-raised C2-60° & 30°
EX-Explosion Proof (others available) 45-45 degree C3-45° & 90°
FF-Fail Freeze 30-30 degree C4-120° & 60°
Example: V100E-D1-90-B-C1
Electropneumatic positioner, with namur drive, 90° cover, raised indicator, and standard 90° cam.
BLX Feedback Module

The BLX R100 (positioner mounting) and the R300 (stand alone) feedback modules allow for accurate position feedback, where on-off indication (mechanical switches) or 4-20mA transmitter or potentiometer is required. Feedback unites can be factory or field mounted to the V100 positioner with no additional parts or mounting brackets required, thus creating a very compact package. Combination of switches and transmitters or potentiometer are available. The positioner/switch package is completely sealed, and can be fitted with a flat or raised indicator. Spring-loaded switches and transmitter make calibration simple and quick.

BLX Feedback Module Jumpers


  • Output 4-20mA, 2 wire
  • Voltage supply 10-30VDC
  • Loop Impedance: max 700ohms @ 24 VDC
  • Temp. range -40°F to +185°F (-40°C to +85°C)
  • Unlinearity <1.5%
  • Hysteresis <0.3%
  • Temp. Sensitivity <0.1% / 10°F(5.5°C)
  • Enclosure NEMA 4X (IP66)
  • Painting: Powder polyester
  • 2 Conduit connections 1/2" NPT
  • Internal and external grounding points
  • Bold on to BLX V100 positioner without any mounting details

Settings on PC-board

  • Jumper for Direct(CCW) or Reverse (CW) rotation
  • mper for 45 detings on PC-board
  • Jumper for Direct(CCW) or Reverse (CW) rotation
  • Zero fine set by means of set potentiometer +/- 10%
  • Zero Coarse set by means of simple gear teeth adjustment
  • Test pins for easy calibration in loop

Electronics are short circuit protected

Ordering Codes
Type Switch Feedback Front Cover
(R300 only)
(R300 only)
R100-Feedback Module M-Mechanical (2 spdt) mA-4/20mA 90-90 degree A-Arrow
R100-Positioiner Mounted R-Reed (2 spdt) P1-1k Pot 60-60 degree B-Raised
R300-Feedback Module N-Namur P5-5k Pot 45-45 degree
R300-Stand Alone 30-30 degree

Available with switches only, transmitter or pot only, or combinations of switches and transmitter or switches and pot.
R100 utilizes positioner front cover.

Example: R100-M-mA
Feedback module with 2 mechanical switches, 4-20 mA transmitter.