1. Pilots & Accessories

2. Pilots & Accessories Signal Pilots Control Pilots Accessory Items
Filters
Drip Pots
Instrument Regulators
Shutter Controls

3. Signal Pilots Enhance a pneumatic or mechanical input signal Provide
Reversed Output
Multiplied Output
Volume Boosted Output
On / Off Snap Output

4. 3 PS Snap Pilot Reverses input signal Converts varying signal
to ON / OFF signal.
Variable pressure
Supply
Output
Indirect

5. Direct or Indirect ? Direct Mode Indirect Mode
Rising Input Rising Input
Rising Output Falling Output
Direct
Indirect

6. 3 PS Snap Pilot Variable pressure With increasing variable
pressure, output snaps
OFF at about 10 psi.
With decreasing variable
Pressure, output snaps
ON at 3 psi.
Supply
Supply pressure must
Not exceed 30 psi.
Output
Indirect

7. 3 PS Snap Pilot Converts variable (throttling)
output to ON / OFF output

8. 3 PS Snap Pilot Converts variable (throttling)
output to ON / OFF output.
Reverses output.

9. 3 PG Throttle Pilot Multiplies output pressure 4:1 Variable pressure
Boosts output volume
Direct action
Throttle response
Variable pressure
Output
Supply
Direct

10. 3 PG Throttle Pilot 4:1 increase in sensitivity Pressure reducing
regulator

11. 3 PG Throttle or Snap Throttle Snap Variable pressure
Supply
Output
Output
Supply
Direct
Indirect

12. 3 PGM Manual Reset Pilot Monitors output of a 3-way valve (pilot)
Blocks supply and vents output when a
preset limit is exceeded
3-way valve or pilot
Output
Supply
Direct

13. 3 PGM Manual Reset Pilot
T 12 Thermostat
(3-way valve)
Output
Supply

14. 3 PGB Bistable Pilot Uses two temporary signals:
One signal to turn “ON” the pilot
One signal to turn “OFF” the pilot
Off signal
Supply
On signal
Output

15. 3 PGB Bistable Pilot
Upstream pressure
gap control
Low
High

16. 30 PGR Relay Low variable pressure turns high pressure signal ON / OFF
20–30 psi Variable pressure
Output
0-300 psi Supply
Direct

17. 30 PGR Relay 300 psi pressure closing valve actuated by 30 psi signal
20 to 30 psi variable pressure
Up to 300 psi supply
Up to 300 psi output

18. Control Pilots Sense a controlled pressure and…
Provide output signal for condition monitor
Provide output signal to a remote valve for
Back pressure control
Pressure reduction
Differential pressure control
Vacuum control

19. 30 HPG Pressure range: 5 to 300 psi Controlled Pressure Output Supply
Indirect
Supply

20. 30 HPG PR

21. 30 HPG Direct Pressure range: 5 to 300 psi Semi-snap acting
Does not throttle
Inverted pilot plug
and seats
Controlled
Pressure
Output
Direct
Supply
30 psi max.
AHJ HPG DIR/125 lb Spring
AHJ HPG DIR/300 lb Spring

22. 30 HPG Direct Pressure reducing regulator with line break shut-down
Direct pilot set at low
line break pressure
Indirect PR pilot

23. 30 PG PRDA Pressure range: 5 to 300 psi Throttle action Controlled
Output
Direct
Supply
30 psi max.

24. 30 PG PRDA
Pressure reducing regulator
with fail open valve

25. 75/150 PG Pressure range: 75 PG: 50 to 750 psi 150 PG: 125 to 1500 psi
Throttle action
Single Adjusting Screw
Proportional Output
75 PG = 2:1
150 PG = 1:1
Simple Design
Low Initial Cost
Easy to Understand
Easy to Maintain

26. 75/150 PG
Indirect
Direct
Indirect
Direct

27. 75/150 PG
Pressure Reducing Regulator

28. Liquid Differential Pressure Pilot
Pressure range: 5 to 300 psi
Throttle action
Lower
Pressure
Higher
Pressure
Output
Indirect
Supply

29. Liquid Differential Pressure Pilot
Holds vessel gas pressure above liquid discharge pressure with fail open valve.
Gas out
Inlet
Liquid out

30. Pressure Differential Controller
1 to 260 inches H2O differential
1000, 2000, or 4000 psi working pressure
Indirect

31. 100, 200, 400 PDC
Maintains constant differential
on orifice meter

32. Ounces Pressure Reducing Pilot
Three spring ranges:
½ ounce to 2 ½ psi
½ psi to 5 psi
1 psi to 20 psi
Controlled
Pressure
Output
Indirect
Supply

33. Direct Acting Ounces Pressure Reducing Pilot
Three spring ranges:
½ ounce to 2 ½ psi
½ psi to 5 psi
1 psi to 20 psi
Controlled
Pressure
Output
Supply
30 psi max.
Direct

34. Accessories Supply Gas Regulator Sense Line Protector Drip Pots
Air Motor

35. Supply Gas Regulator Output pressure: 0 to 125 psi
Inlet pressure: 4000 psi max.
Reversible seat
Internally relieving
Low “droop”
Available in 316 stainless
Outlet
Inlet

36. Supply Gas Regulator
Supply Gas Regulator
Sense Line
Protector

37. Sense Line Protector Protects pilots on high pressure systems
Output pressure: 20 to 300 psi
Inlet pressure: 1000 psi max.
Inlet
Outlet

38. Drip Pots
DP DP 200/ FD 200

39. Air Motor Operates shutters on air cooled heat exchangers
5 ½ inch stroke
125 psi working pressure

40. Air Motor
Operates shutters on air
cooled heat exchangers