Models
AADF: Cast Iron
ACDF: Cast Steel
ASSDF: Stainless Steel
- API 520 & 614 Approved
- Chatter-free operation
- Mount in any position
- Suitable for continuous duty
Size Range: 2.5″, 3″ & 4″
Pressures: 7 – 150 psi
Flow Rate: 150 – 600 gpm
A-Series Direct Acting with Flange Connections
INSTALLATION, MAINTENANCE & OPERATION
Installation
Fulflo valves can be mounted in any position. A tee may be inserted in the pump discharge line to mount the valve. The pipelines carrying the heavy valves must be well supported and overhung weights avoided. The correct size of the valve must be used, preferably equal to the size of the pipeline to which they are connected. Flanged valves (AADF and ACDF) are bolted to the companion flange which may be threaded or welded to the pipe. The outlet of the valve should be piped to the supply tank unless specific applications call for alternate piping of return lines. Care must be taken to have the discharge well below the oil level in the tank to prevent air entrainment and erratic operation.
Setting Valves
The valve may be set with a hydraulic hand pump for cracking pressure. If a test stand is available, the valve should be connected to the discharge header with the pump bypass open, and the bypass gradually closed until the desired pressure registers on the gauge. For Direct Acting valves, adjust valve adjusting screw until valve slightly bleeds at the set bypass pressure and lock adjusting screw. If a valve is required to bypass a given amount of fluid at a given pressure, a test stand having a flow meter in the pump discharge line must be available. With a valve adjusting for cracking pressure as above, continue closing the bypass until the required flow registers on the flow meter and observe pressure. Readjust pressure, if necessary, to obtain desired pressure at the desired flow.
Maintenance & Operation
Fulflo valves provide reliable “chatter-free” operations when the system is free of abrasives and foreign matter. Continuous filtration of the liquid used is strongly recommended.
TYPICAL DISASSEMBLY OF STANDARD TYPE VALVE
To dismantle the valve for inspection or cleaning:
- Remove cap “A” and O-ring “D”
- Remove lock nut “C”
- Remove adjusting screw “B”
- Remove cap screws “E”
- Remove bonnet “F”
- Remove gasket “G”
- Remove spring retainer “H”
- Remove spring or springs “I” and “J”
- Remove piston “M”
- Unscrew and withdraw cylinder “K”
- Remove retaining bushing “N” if necessary
Inspect cylinder bore and piston for wear or scoring. Replace broken or damaged parts. Clean all parts thoroughly and re-assemble as follows:
- Reverse process of disassembly from operation 11 to 6 above
- Thread adjusting screw “B” into bonnet “F” so that it may be guided into the recess of spring retainer “H”, while re-assembling bonnet “F” to body “L”
- Then proceed with steps 5, 4, 2,& 1 above, in reverse order
ASSEMBLY NUMBER IDENTIFICATION CHART
| Symbol Number | Designation | Code | Description |
|---|---|---|---|
| 1 | Series | A | |
| 2 | Material | A C SS |
Cast Iron Cast Steel Stainless Steel |
| 3 | Type | D P |
Direct Acting Internal Pilot Operated |
| 4 & 5 | Size | 09 10 11 |
21/2” 3” 4” |
| 6 | Connection | None F |
Screw Type (21/2″ and 3” only) Flange |
| 7, 8, 9 | ASA Flange Rating |
150# 300# 600# |
|
| 10 | Flange Style Only |
A B C D |
Raised Face, Staggered Bolt Centers Smooth Face, Staggered Bolt Centers Raised Face, Bolts on Valve Centerline Smooth Face, Bolts on Valve Centerline |
| 11 | O-Ring Material |
R RV RS RT RA EPR RN |
Buna O-Ring Cap Seal (Standard) Viton O-Ring Cap Seal Silicone O-Ring Cap Seal Teflon O-Ring Cap Seal Aflas O-Ring Cap Seal Ethylene Propylene Neoprene |
| 12 | Piston Material |
/HS /SS /3SS |
Hardened Steel 416 Stainless Steel 303 Stainless Steel (For Stainless valves only) |
| 13 | Spring
(+/-1-5 PSI ON ALL
|
A0960 D A0961C A0960D & A0970D A0961C & A0971C A1060D A1061C A1060D & A1070D A1061C & A1071C A1160D A1160D & A1170D |
Pressure Range = 7 –57 psi Pressure Range = 8 – 75 psi Pressure Range = 14 – 115 psi Pressure Range = 16 –150 psi Pressure Range = 5 – 50 psi Pressure Range = 5 – 67 psi Pressure Range = 10 –100 psi Pressure Range = 10 –135 psi Pressure Range = 2 – 37 psi Pressure Range = 4 – 75 psi |
| 14 | Setting | Desired Set Pressure |
Example
ACD09F300AR |
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How to Order
Specify:
- Valve Model Number (1-10)
- O-Ring Identification Number (11)
- Piston Material (12)
- Spring Part Number (13)
- Spring pressure range or desired pressure setting (14)
DIMENSIONS & PARTS
Dimensions in Inches
| Valve Size | Flange Rating | AA | BB |
| 21/2″ | 150# & 300# | 1513/16 | 53/4 |
| 21/2″ | 600# | 163/16 | 61/8 |
| 3″ | 150# & 300# | 171/8 | 61/4 |
| 3″ | 600# | 171/2 | 65/8 |
| 4″ | 150# & 300# | 20 | 715/16 |
| 4″ | 600# | 203/16 | 81/8 |
Note: Refer to Engineering Section for Flange & Drilling Dimensions
Cutaway Drawing
Parts List
Valve Size |
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| Sym. | Name | Model | 21/2” | 3” | 4” | |||||||||
| A | Cap | AAD, ACD ASSD |
A1101CR A1101SSR |
A1013CR A1013SSR |
A1113CR A1113SSR |
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| B | Adjusting Screw | AAD, ACD ASSD |
A0922C A0922SS |
A1022C A1022SS |
A1122C A1122SS |
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| C | Lock Nut | AAD, ACD ASSD |
605-S 605-SS |
705-S 705-SS |
805-S 805-SS |
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| D | O-Ring+ | AAD, ACD ASSD |
604-* 604-* |
704-* 704-* |
804-* 804-* |
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| E | Cap Screw | All Models | 3/8×1 SHCS | 3/8×1 SHCS | 3/8×1 SHCS | |||||||||
| F | Bonnet | AAD ACD ASSD |
A0909A A0909C A0909SS |
A1009A A1009C A1009SS |
A1109A A1109C A1109SS |
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| G | Gasket+ | AAD, ACD ASSD |
A0903E A0903RT |
A1003E A1003RT |
A1103E A1103RT |
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| H | Spring Retainer | AAD, ACD ASSD |
A0916C A0916SS |
A1016C A1016SS |
A1116C A1116SS |
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| I | Spring+ | All Models | See Chart* | See Chart* | See Chart* | |||||||||
| J | Spring+ | All Models | See Chart* | See Chart* | See Chart* | |||||||||
| K | Cylinder+ | AAD, ACD ASSD |
A0908C A0908SS |
A1008C A1008SS |
A1108C A1108SS |
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| L | Body | AAD ACD ASSD |
A0900AF A0900CF A0900SSF |
A1000AF A1000CF A1000SSF |
A1100AF A1100CF A1100SSF |
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| M | Piston+ Hardened Steel 416 Stainless Steel 303 Stainless Steel |
– AAD ACD ASSD (only) |
– A0906C A0906D A0906SS |
– A1006C A1006D A1006SS |
– A1106C A1106D A1106SS |
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| N | Retaining Bushing | AAD, ACD ASSD |
A0911C A0911SS |
A1011C A1011SS |
A1111C A1111SS |
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+ Recommended spare parts
* See Assembly Number Identification Chart; Symbol Number 13
PERFORMANCE DATA
All valve tests 110˚F. to 120˚F. Oil Viscosity 150 SSU at 100˚F.
(Charts good from 30 to 500 SSU)
Overpressure: The pressure increase or accumulation above the set pressure when the valve is discharging flow.