Images are representations only.
Model 15 Positive Bias Relay
Brand: Fairchild Industrial Products
The Rotork Fairchild Model 15 Positive Bias Relay is designed for applications that require an output pressure that is the sum of a controlled input signal plus a fixed bias.
This pneumatic relay provides an output pressure that represents the input signal pressure plus a preset bias. Mathematically Po = Ps + K where Po is output pressure, Ps is signal pressure and K is the spring constant.
This unit, available in several bias range configurations to meet a variety of output requirements, offers excellent sensitivity and high flow capacity in a small volume.
The Fairchild Model 15 Pneumatic Biasing Relay is well suited to a variety of control applications, including range shifting, and tension control, and pressure control from a remote location.
Features- Sensitive to 1/4" Water Column variation
- Balanced Supply Valve
- Aspirator Tube
- Flow Capacity of 40 SCFM (68 m3/Hr)
- Separate Control Chamber
- Mounting Bracket available
- Permits use in high precision applications
- Minimizes the effects of supply pressure variation
- Minimizes downstream pressure droop under flow conditions
- Allows use in applications requiring high flow and/or fast response
- Isolates the diaphragm from the main flow, eliminating hunting and buzzing
- Quick and easy field installation
Displaying prices & availability for Ohio, United States in CAD. Change location.
Models matching criteria: 434
- Base Model - 1542
- Port Size - 1/2" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Silicone
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$1,176.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 3/8" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,407.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/4" NPT
- Port Thread - NPT
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,505.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 3/8" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$1,628.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/2" NPT
- Port Thread - NPT
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,700.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 1/2" NPT
- Port Thread - NPT
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,598.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 1/2" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$2,315.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 3/8" NPT
- Port Thread - NPT
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$2,458.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 1/2" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,094.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/2" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$1,872.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/2" NPT
- Port Thread - NPT
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$2,372.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 3/8" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$1,158.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/2" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$666.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 3/8" NPT
- Port Thread - NPT
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$2,288.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 3/8" NPT
- Port Thread - NPT
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$2,397.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/4" NPT
- Port Thread - NPT
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$2,558.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 3/8" NPT
- Port Thread - NPT
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,148.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/2" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Silicone
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$517.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 3/8" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$677.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/4" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$858.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 1/2" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Silicone
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$91.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 3/8" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$239.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 3/8" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$891.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 3/8" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$1,264.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 3/8" NPT
- Port Thread - NPT
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$1,933.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 1/4" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$415.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 3/8" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,815.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/2" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$2,224.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/4" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$2,525.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/4" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Silicone
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$396.00
CAD
$10.00 Shipping
- Base Model - 1544
- Port Size - 1/2" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,155.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/2" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,750.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 1/2" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,754.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 1/4" NPT
- Port Thread - NPT
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$447.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/4" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Silicone
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Straight
100+ In Stock
$1,652.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/4" NPT
- Port Thread - NPT
- Elastomers - Buna-A & Dacron
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,418.00
CAD
$10.00 Shipping
- Base Model - 1543
- Port Size - 1/4" NPT
- Port Thread - BSPP (Parallel)
- Elastomers - Silicone
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Tapped Exhaust
100+ In Stock
$1,022.00
CAD
$10.00 Shipping
- Base Model - 1546
- Port Size - 1/4" NPT
- Port Thread - BSPT (Tapered)
- Elastomers - Fluorocarbon (Viton)
- Actuation Adjustment Means - Knob Adjustment
- Exhaust Port - Straight
100+ In Stock
$1,007.00
CAD
$10.00 Shipping
- Base Model - 1542
- Port Size - 1/2" NPT
- Port Thread - NPT
- Elastomers - Silicone
- Actuation Adjustment Means - Tamper Proof
- Exhaust Port - Tapped Exhaust
100+ In Stock
$208.00
CAD
$10.00 Shipping
100+ In Stock
$1,796.00
CAD
$10.00 Shipping
Specifications
Ambient Temperature Range
- -40° to 93° C (-40° to 200° F)
Enclosure, Body Material
- Aluminum Alloy
Exhaust Capacity - Relieving Units Only
- 40 scfm (68 m³/hour)
Flow Capacity
- 150 scfm (255 m³/hour)
Mounting
- Pipe or Panel
Pressure Range
- bar: 0 to 0.7
- bar: 0.03 to 2
- bar: 0.1 to 4
- bar: 0.15 to 10
- kPa: 0 to 70
- kPa: 10 to 400
- kPa: 15 to 1,000
- kPa: 3 to 200
- psi: 0.5 to 30
- psig: 1 to 60
- psig: 2 to 150
Sensitivity
- < 1/4” WC (0.64 cm)
Signal or Output Pressure - Maximum
- bar: 10
- kPa: 1,000
- psig: 150
Supply Pressure - Maximum
- bar: 17
- kPa: 1,700
- psig: 250
Supply Pressure Effect
- psig: 0.1 (bar: 0.007, kPa: 0.7) for a psig: 100 (bar: 7, kPa: 700) Change in Supply Pressure
