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Dixon Sanitary
™
RP-BA Actuators
________________________TABLE OF CONTENTS___________________ Page SAFETY………………………………………………………………………………………. 2 WARRANTY…………………………………………………………………………………. 3 FEATURES AND SPECIFICATIONS…………………………………………………..…. 4 DESIGN AND CONSTRUCTION…………….. ……………………………………….… 5-6 REPAIR KITS………………………………………………….………………………….….. 7 DIMENSIONS………………………….……………………………………………………... 8 TORQUE RATINGS……………………………………………….………………………... 9 OPERATION AND MAINTENANCE…..………………….…………………………...10-12
www.bradfordfittings.com
SAFETY Warnings, cautions and notes are contained in this manual. To avoid serious injury and/or possible damage to equipment, pay attention to these messages. WARNING Hazards or unsafe practices which COULD result in severe personal injury or death and how to avoid it. CAUTION Hazards or unsafe practices which COULD result in minor personal injury or product or property damage.
NOTE
Important information pertaining directly to the subject. (Information to be aware of when completing a task)
Do Not modify any Bradford product. Non-factory modifications could create hazardous conditions and void all warranties. Do Not attempt to use a Bradford product in any application that exceeds the product rating.
Read and understand this manual prior to installing, operating or maintaining this valve.
www.bradfordfittings.com
LIMITED WARRANTY Bradford, a Dixon Company, (herein called "Bradford") warrants the products described herein, and manufactured by Bradford to be free from defects in material and workmanship for a period of one (1) year from date of shipment by Bradford under normal use and service. It's sole obligation under this warranty being limited to repairing or replacing, as hereinafter provided, at its option any product found to Bradford's satisfaction to be defective upon examination by it, provided that such product shall be returned for inspection to Bradford within three (3) months after discovery of the defect. The repair or replacement of defective products will be made without charge for parts or labor. This warranty shall not apply to: (a) parts or products not manufactured exclusively for Bradford, the warranty of such items being limited to the actual warranty extended to Bradford by its supplier; (b) any product that has been subject to abuse, negligence, accident, or misapplication; (c) any product altered or repaired by others than Bradford; and (d) to normal maintenance services and the replacement of service items (such as gaskets and seats) made in connection with such services. To the extent permitted by State law, this limited warranty shall extend only to the buyer and any other person reasonably expected to use or consume the goods who is injured in person by any breach of the warranty. No action may be brought against Bradford for an alleged breach of warranty unless such action is instituted within one (1) year from the date the cause of action accrues. This limited warranty shall be construed and enforced to the fullest extent allowable by applicable State law. OTHER THAN THE OBLIGATION OF BRADFORD SET FORTH HEREIN, BRADFORD DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE,
AND
ANY
OTHER
OBLIGATION
OR
LIABILITY.
THE
FOREGOING
CONSTITUTES BRADFORD'S SOLE OBLIGATION WITH RESPECT TO DAMAGES, WHETHER DIRECT, INCIDENTAL OR CONSEQUENTIAL, RESULTING FROM THE USE OR PERFORMANCE OF THE PRODUCT.
Some products and sizes may be discontinued when stock is depleted, or may require a minimum quantity for ordering. NOTE: Reasonable care has been taken in preparing the Illustrated Price List. Bradford, a Dixon Company, reserves the right to make corrections and price changes. www.bradfordfittings.com
Pneumatic Actuator Features & Specifications Indicator A high visibility polyethylene for Open / Close indication is standard on all models
Body Extruded hard anodized aluminum alloy for wear and corrosion resistance and reduced friction.
Pinion Electroless Nickle Plated Carbon Steel for maximum corrosion and wear resistance. Anti-blowout design.
Rotation Adjustment A full ±5˚ of travel adjustment in the open and closed positions. Standard on all sizes.
End Caps Epoxy-coated die-cast aluminum alloy for maximum resistance to corrosive environments.
Pistons Die-cast aluminum alloy fitted with Nylon bushing guides and Buna –N seals.
Heavy Duty Springs High tensile steel springs with retainer and guide for safe and easy assembly.
Solenoid Interface International NAMUR solenoid mounting interface is standard on all units.
Specifications Operating Pressure Range Maximum Allowable Working Pressure Operating Media Operating Temperature Standard Piston and pinion lubrication Range of rotation adjustment Valve & Accessory Mounting Output shaft Design Factory testing cycles
40 – 120 PSIG 150 PSIG Dry or lubricated non-corrosive gas -40˚ F to +200˚ F Shell Darina R2 Between 80˚ and 100˚ Standard ISO 5211 bolt patterns Female – Double Square Twin Rack & Pinion 1 million
DESIGN and CONSTRUCTION (DOUBLE ACTING)
ITEM NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
DESCRIPTION BODY PISTON PISTON BEARING O-RING O-RING END CAP (LEFT) WASHER CAP SCREW O-RING BEARING STOP CAM POSITION INDICATOR RETAINING RING WASHER BEARING RETAINING RING PINION BEARING O-RING O-RING WASHER STOP SCREW NUT O-RING END CAP (RIGHT)
MATERIAL ANODIZED ALUMINUM ALLOY DIE CAST ALUMINUM ALLOY NYLON BUNA-N BUNA-N DIE CAST ALUMINUM ALLOY STAINLESS STEEL STAINLESS STEEL BUNA-N NYLON CARBON STEEL POLYETHYLENE STAINLESS STEEL STAINLESS STEEL NYLON STAINLESS STEEL CARBON STEEL NYLON BUNA-N BUNA-N STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL BUNA-N DIE CAST ALUMINUM ALLOY
QUANTITY 1 2 4 2 2 1 8 8 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1
DESIGN and CONSTRUCTION (SPRING RETURN)
Spring set combinations: SR2 = (1) B SR3 = (1) C SR4= (1) A & (1) C SR5 =(1)B & (1) C SR6 =(1) A, (1)B & (1) C
ITEM NUMBER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
DESCRIPTION BODY PISTON PISTON BEARING O-RING O-RING END CAP (LEFT) WASHER CAP SCREW O-RING BEARING STOP CAM POSITION INDICATOR RETAINING RING WASHER BEARING RETAINING RING PINION BEARING O-RING O-RING WASHER STOP SCREW NUT O-RING END CAP (RIGHT) SCREW WASHER SPRING GUIDE RETAINER SPRING* O-RING WASHER NUT
MATERIAL ANODIZED ALUMINUM ALLOY DIE CAST ALUMINUM ALLOY NYLON BUNA-N BUNA-N DIE CAST ALUMINUM ALLOY STAINLESS STEEL STAINLESS STEEL BUNA-N NYLON CARBON STEEL POLYETHYLENE STAINLESS STEEL STAINLESS STEEL NYLON STAINLESS STEEL CARBON STEEL NYLON BUNA-N BUNA-N STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL BUNA-N DIE CAST ALUMINUM ALLOY STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL STAINLESS STEEL HIGH TENSILE STEEL BUNA-N STAINLESS STEEL STAINLESS STEEL
*Spring set #4 is standard. Different combinations are available on request.
QUANTITY 1 2 4 2 2 1 8 8 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 1 2 2 2 2 4* 2 2 2
REPAIR KITS
ITEM NUMBER 3 4 5 9 10 15 18 19 20 24 31
DESCRIPTION PISTON BEARING O-RING O-RING O-RING BEARING BEARING BEARING O-RING O-RING O-RING O-RING
REPAIR KIT WITH BUNA-N RP-012-RK RP-025-RK RP-045-RK RP-101-RK RP-225-RK RP-365-RK RP-500-RK
MATERIAL NYLON BUNA-N BUNA-N BUNA-N NYLON NYLON NYLON BUNA-N BUNA-N BUNA-N BUNA-N
MATERIAL (OPTION) VITON VITON VITON
VITON VITON VITON VITON
REPAIR KIT WITH VITON RP-012-RKV RP-025-RKV RP-045-RKV RP-101-RKV RP-225-RKV RP-365-RKV RP-500-RKV
QUANTITY 4 2 2 1 1 1 1 1 2 2 2
DIMENSIONS
RP-BA-012-DA
ALL DIMENSIONS IN (mm) ISO Model # Pattern RP-BA025 F04 & F05 RP-BA045 F05 & F07 RP-BA101 F05 & F07 RP-BA225 F07 & F10 RP-BA365 F10 & F12 RP-BA500 F10 & F12
Model # RP-BA025 RP-BA045 RP-BA101 RP-BA225 RP-BA365 RP-BA500
A
B
C
D
E
F
G
H
J
K
L
144.3
194.6
79
57.7
81.4
47.8
32.5
12.6
M5xP0.8
29.7
14.5
149.2
205.6
98
67.4
95
51.5
32.5
13.8
M6xP1.0
30.2
18.8
183
250
121
79.2
119
64.5
46.2
16.6
M8xP1.25
33.5
23
259.6
355
141
89.5
140.5
75.5
54
18.6
M10xP1.5
39
29.5
304.3
422
176
99.1
185.2
105.5
79.7
27.3
M12xP1.75
97.4
35.5
364.4
487
196
116.5
204.8
107.8
79.4
28.3
M12xP1.75
99
35.5
ISO Pattern
M
N
P
Q
R
S
T
W
F04 & F05
11
17
M5xP0.8
8
M6xP1.0
10
50
42
F05 & F07
14
21
M6xP1.0
10
M8xP1.25
12
70
50
F05 & F07
17
25.5
M6xP1.0
10
M8xP1.25
12
70
50
F07 & F10
22
31
M8xP1.25
12
M10xP1.5
15
102
70
F10 & F12
27
35
M10xP1.5
15
M12xP1.75
19
125
102
F10 & F12
27
35
M10xP1.5
15
M12xP1.75
19
125
102
MODEL NUMBER
T O R Q U E R A T I N G S
DOUBLE ACTING TORQUE OUTPUT(in/lb) AT OPERATING PRESSURE-PSIG
RP-BA-012-DA RP-BA-025-DA RP-BA-045-DA RP-BA-101-DA RP-BA-225-DA RP-BA-365-DA
40 psig 63 in/lb 125 in/lb 225 in/lb 500 in/lb 1125 in/lb 1825 in/lb
60 psig 94 in/lb 187 in/lb 337 in/lb 750 in/lb 1687 in/lb 2738 in/lb
80 psig 125 in/lb 250 in/lb 450 in/lb 1000 in/lb 2250 in/lb 3650 in/lb
100 psig 156 in/lb 312 in/lb 562 in/lb 1250 in/lb 2812 in/lb 4563 in/lb
120psig 188 in/lb 375 in/lb 675 in/lb 1500 in/lb 3375 in/lb 5475 in/lb
RP-BA-500-DA
2500 in/lb
3750 in/lb
5000 in/lb
6250 in/lb
7500 in/lb
MODEL NUMBER RP-BA-
025SR
045SR
101SR
225SR
365SR
500SR
SPRING RETURN TORQUE OUTPUT(in/lb) AT OPERATING PRESSURE-PSIG SPRING TORQUE
40 PSIG
60 PSIG
80 PSIG
100 PSIG
120 PSIG
SPR. SET
ST.
END
ST.
END
ST.
END
ST.
END
ST.
END
ST.
END
2
69
45
76
47
138
109
201
172
263
234
326
312
3
104
67
113
70
176
133
229
195
301
258
4
140
90
88
31
151
93
213
156
276
218
5
175
112
126
54
189
116
251
179
6
209
135
164
77
227
139
2
126
81
3
190
4
135
248
196
361
309
473
421
586
533
121
203
125
316
238
428
350
541
463
254
162
158
54
271
167
383
279
496
392
5
317
202
226
96
339
209
451
321
6
381
243
293
137
406
251
2
279
179
3
418
4
300
83
549
433
798
682
1048
931
1297
1181
270
449
278
698
526
947
775
1196
1025
559
360
350
120
599
371
848
618
1097
867
5
698
450
500
212
749
464
998
710
6
839
540
650
304
899
557
2
659
394
3
990
4
690
184
1253
958
1816
1521
2379
2084
2939
2647
590
1034
591
1596
1154
2159
1717
2722
2280
1320
787
816
226
1379
788
2029
1351
2505
1914
5
1650
984
1161
424
1724
984
2287
1549
6
1980
1181
1506
621
2069
1181
2
1053
607
3
1573
4
1152
395
2063
1570
2975
2482
3886
3393
4797
4305
912
1726
996
2637
1907
3549
2819
4460
3730
2091
1217
1388
423
2300
1335
3211
2246
4123
3157
5
2625
1519
1967
744
2878
1655
3789
2566
6
3144
1824
2540
1082
3452
1994
2
1560
785
3
2340
4
1590
659
803
2780
1990
3970
3180
5160
4380
6350
5570
1180
2380
1200
3570
2400
4760
3590
5960
4780
3130
1570
1980
414
3180
1600
4370
2800
5560
3990
5
3910
1960
2780
815
3970
2010
5160
3200
6
4690
2360
3570
1220
4760
2410
* - # 4 SPRING SET IS STANDARD
BI-DIRECTIONAL TRAVEL STOP INSTRUCTION Bradford Actuators feature bi-directional pinion travel stops. Stops located on the side of the actuator allow a full ±5˚ of valve travel adjustment, giving a guaranteed range of adjustment between 80˚ and 100˚ of actuator travel. These travel stops are designed to absorb the maximum rated torque of the actuator and the maximum impact loading associated with recommended stroke speed. Operation Adjustment of the counterclockwise and clockwise rotation limits are accomplished by turning the respective left and right stop adjustment screws to increase or reduce the output rotation angle.
ACTUATOR OPERATION Double-Acting (Top View)
P2
P1
For a clockwise output, apply pressure to P2. This forces the pistons to move to the center resulting in the linear piston travel converted to clockwise rotation of the pinion. The air volume between the pistons is exhausted at P1.
P2
P1
For a counter-clockwise output, apply pressure to P1. This forces the pistons to move away from the center resulting in the linear piston travel converted to counter-clockwise rotation of the pinion. The air volume outside each piston is exhausted at P2.
Spring Return (Top View)
P2
P1
For a clockwise output, the spring energy forces the pistons to move to the center resulting in the linear piston travel converted to clockwise rotation of the pinion. The air volume between the pistons is exhausted at P1, while the volume outside the pistons is vented at P2.
P2
P1
For a counter-clockwise output, apply pressure to P1. This forces the pistons to move away from the center, compressing the spring sets, and resulting in the linear piston travel converted to counterclockwise rotation of the pinion. The air volume outside each piston is exhausted at P2.
NOTE: When Reverse Rotation is required, the pistons can be inverted in the housing. This will result in a clockwise rotation when pressure is applied to P1 and a counterclockwise rotation when P1 is vented.
MAINTENANCE & OPERATING INSTRUCTIONS BRADFORD ACTUATOR OPERATION NOTE: For optimal operation, BRADFORD actuators should be run with a supply of clean, lubricated air. SPRING RETURN ACTUATORS Air to PORT P1 (the right hand port) causes the actuator to turn CCW. Loss of air to PORT P2 causes air to exhaust and the actuator turns CW. This is the FAIL CLOSE operation. DOUBLE ACTING ACTUATORS Air to PORT P1 (the right hand port) causes the actuator to turn CCW. Air to PORT P2 (the left hand port) causes the actuator to turn CW. ADJUSTING OPEN AND CLOSED STOPS BRADFORD actuators allow for ± 10˚ adjustment in both the open and closed positions. The stop adjustment bolts are located above the air ports (22 & 23). The right hand bolt allows for adjustment in the closed position; the left hand bolt allows for adjustment in the open position. A clockwise turn of the left bolt results in clockwise movement of the pinion; a counterclockwise turn of the bolt results in counterclockwise movement of the pinion. Loosen nut #23 and adjust screw #22. Re-tighten nut after adjustment to secure position.
DISASSEMBLING STANDARD ACTUATORS IMPORTANT: Before beginning disassembly, ensure that the air supply to the actuator has been disconnected, all accessories have been removed and that the actuator has been dismounted from the valve. 1. Loosen the end cap fasteners (8) with a wrench (size varies depending on actuator model). On the spring return actuator, alternate 3 to 5 turns on each fastener until the springs are completely decompressed. Use caution in removing the cap since the springs are under load until the fasteners are fully extended. Remove #7 washers and #8 screws. Remove #6 cover. 2. Remove #5 and #24 O-rings. Repeat steps for other side cover #6. The indicator (12) may now be removed. Loosen #23 nuts and #22 screws. 3. Turn the pinion shaft (17) CCW until the pistons are at the full end of travel. Disengage the pistons (2) from the pinion. (NOTE: Low pressure
air--3 to 5 P.S.I. MAXIMUM--might be required to force the pistons completely from the body.) Note the position of the pistons before removing them from the actuator body. Remove #3 bearings and #4 Orings from the pistons. Remove #13, 14 & 15 respectively from the pinion. 4. Push the pinion halfway into the bottom of the actuator. Remove #10 and #11 from the pinion. Now the pinion can be pushed completely out of the body. Remove #18, 9, and 19 from the pinion shaft. All replacement parts may now be re-assembled. BRADFORD recommends that all wear parts (repair kit) be replaced before reassembly.
REASSEMBLING STANDARD ACTUATORS IMPORTANT: Be sure that the actuator surfaces are free of grit and scratches before reassembling. 1. Apply a light film of grease to all o-rings, bearings and the pinion before replacing. 2. Put the pinion (17) back through the actuator with the flats of the pinion shaft running parallel with the body. Reverse disassembly procedure for re-assembly. 3. When reassembling the actuator, make sure that the piston racks are square to the actuator body and returned to their original orientation. (NOTE: The normal operation of all BRADFORD actuators is FAIL CLOSED. If you want to change the orientation to FAIL OPEN, rotate the racks 180º to create a reverse operation. 4. When replacing springs in a spring return actuator, ensure that the springs are replaced in their identical position in the end cap from which they were removed. (NOTE: In some circumstances, you might want to change the standard 80 pound spring set to fit your application and available air pressure. Changing the spring sets on BRADFORD actuators requires no special tools. Please refer to the spring combination torque chart in our catalog for the spring combinations that will allow you to operate with the spring set that you desire. 5. Seal the end caps with a petroleum lubricant and bolt to actuator body. 6. Check the seal of the actuator by covering seal areas (pinion, end caps) with soapy water and using low pressure air to the actuator to ensure that no bubbles are produced.