Type 617 & 618
Instruction Manual
Fisher Controls
Type 617 and 618 Ball Float Actuator R
November 1993
Contents
Liquid Level Adjustment with Type 618 Actuator 2 Increasing Travel Adjustment with Type 618 Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . 2
................................ Scope of Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2 2 2 2
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3 Replacing the Float . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Reversing Float Action . . . . . . . . . . . . . . . . . . . . . . . . . 5
Parts Ordering Adjustments
................................ 2 Liquid Level Adjustment with Type 617 Actuator . . . 2
TYPE 617
............................. 5
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
W2132-2
Figure 1. Type 617 and 618 Actuators Mounted on easy-eR Valves easy-eR is a mark owned by Fisher Controls International, Inc. eFisher Controls International Inc., 1981, 1993; All Rights Reserved
TYPE 618
5
D100297X012
Introduction
W2134-2
Form 1312
R
Type 617 & 618
Introduction Scope of Manual This manual provides installation, adjustment, maintenance procedures, and part ordering information for the Type 617 and 618 ball float actuators (see figure 1). Information for the valves and other accessories is found in separate instruction manuals. Only personnel qualified through training or experience should install, operate, and maintain this actuator. If there are any questions concerning these instructions, contact your Fisher sales office or sales representative before proceeding.
Description Type 617 and 618 ball float actuators are used with sliding stem valves having 2-1/8 and 2-13/16 inch (54 and 71 mm) yoke boss diameters. The actuator is used to control the level of liquids by regulating flow to or from open tanks, reservoirs, or other liquid containers. The Type 618 actuator is of a heavier construction than the Type 617 actuator, and it offers a greater variety of valve stem travel adjustments for use on larger valve sizes. Both the Type 617 and 618 actuators can operate either as a first-class lever, in which the valve stem moves down with rising level, or as a second-class lever, in which the valve stem rises with rising level (see figure 2).
Specifications Refer to table 1 for the Type 617 and 618 ball float actuators specifications.
Installation D Valve/Actuator Assembly: If the actuator and valve are shipped together as a control valve assembly, it is adjusted at the factory. Some minor re-adjustment may be necessary before placing the valve in service. Install the actuator in the vertical position for proper performance. The actuator is used with globe or angle valves. Refer to the valve installation procedures in the valve instruction manual to install the valve in the pipeline. D Actuator Mounting: If the actuator is shipped separately or the actuator has been removed from the valve, it is necessary to mount the actuator on the valve. Refer to the actuator mounting procedures below. Key number locations are shown in figures 3 and 4 unless otherwise indicated.
2
1. Remove the yoke locknut from the valve yoke boss. 2. Install the actuator yoke (key 1) onto the valve yoke boss. 3. Replace the yoke boss locknut onto the valve yoke boss, and tighten the locknut. 4. Install the actuator in the vertical position for proper performance (see figure 1). Install the stem connector, and refer to the following Adjustment section.
Adjustments The actuator adjustment procedures provide steps for either raising or lowering liquid level control. Weights are furnished for both the Type 617 and Type 618 actuator when used with 2-13/16 inch (71 mm) yoke boss. These weights provide a means for counterbalancing the weight of the lever arm to obtain a half-submerged float position. This float position is recommended because it causes a maximum force change on the valve stem for a minimum liquid level change.
Liquid Level Adjustment The controlled liquid level is varied by changing the angle of the float rod with respect to the lever. Loosen the two nuts holding the lever segment in place. Rotate the lever segment outward, away from the valve, or inward to change to the desired angle. Tighten the two nuts to clamp the lever segment in the desired position. The change in the angle adjusts the liquid level. Similar adjustments are used for either a first- or second-class lever arrangement. The actuator can be rotated on the valve yoke boss to any desired angle in the horizontal plane as long as the float rod assembly has free movement. Loosen the yoke locknut on the head assembly and rotate the actuator to the desired position and tighten the locknut.
Increasing Valve Travel Adjustment with Type 618 Actuator Key numbers are shown in figure 4 unless otherwise directed. The Type 618 actuator, when used with 2- through 6-inch valves has an adjustment lever link (key 20) so that the greater valve travels required for the larger valve sizes can be obtained without adversely affecting the desired control level limits of the application. For increased valve travel, position the lever link a greater distance from the valve stem as follows:
Type 617 & 618 Table 1. Specifications Operating Principle First-Class Lever: Valve stem moves down with rising level (see figure 2) Second-Class Lever: Valve stem moves up with rising level (see figure 2) Yoke Boss Diameter and Valve Plug Stem Force See table 2 Float Buoyancy See table 3
Counterbalance Standard with 2-13/16 (71 mm) yoke boss diameter Approximate Weight Type 617 Actuator 2-1/8 inch (51 mm) Yoke Boss: 25 lb (11 kg) 2-13/16 inch (71 mm) Yoke Boss: 45 lb (20 kg) Type 618 Actuator 2-1/8 inch (51 mm) Yoke Boss: 25 lb (11 kg) 2-13/16 inch (71 mm) Yoke Boss: 60 lb (27 kg)
NOTE; 1 FOR EXAMPLE: IF A RISING FLUID LEVEL MOVES THE LEVER UP, THEN A FIRST-CLASS LEVER MOVES THE VALVE STEM DOWN. IF A RISING FLUID LEVEL MOVES THE LEVER UP, THEN A SECOND-CLASS LEVER MOVES THE VALVE STEM UP. A2731-1
Figure 2. First- and Second-Class Lever Arrangements
1. Remove the lever arm (key 12) at the valve stem connection (key 6). 2. Remove the lever link at the yoke (key 8). 3. Install the lever link in the desired hole in the yoke, and in an outward direction from the lever stem. 4. Install the lever arm on the valve stem connection by using the appropriate hole in the lever arm.
Maintenance Actuator parts are subject to normal wear and must be inspected and replaced when necessary. The frequency of inspection and replacement depends on the severity of service conditions. Because of the care Fisher Controls takes in meeting all manufacturing requirements (such as heat treating and dimensional tolerances), use only replacement parts manufactured or furnished by Fisher Controls.
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Type 617 & 618 Table 2. Valve Plug Stem Force Available ACTUATOR TYPE
VALVE STEM DIAMETER In.
PIVOT POSITION
mm
VALVE PLUG STEM FORCE AVAILABLE
MAXIMUM VALVE STEM TRAVEL In.
1st Class Lever
2nd Class Lever
Float Diameter, In. (mm)
Float Diameter, In. (mm)
6 (152)
mm
Lbf
N
7-3/4 (197)
9-3/4 (248)
Lbf
Lbf
N
N
7-3/4 (197)
9-3/4 (248)
Lbf
6 (152) N
Lbf
N
Lbf
N
2-1/8 In. (54 mm) Yoke Boss—Direct-Acting (PDTC)(1) 617
3/8
9.5
---
3/4
19.1
9
40
70
311
158
703
64
285
81
360
146
649
618
3/8
9.5
---
3/4
19.1
0
0
53
236
131
583
67
298
83
369
141
627
2-1/8 In. (54 mm) Yoke Boss—Reverse-Acting (PDTO)(1) 617
3/8
9.5
---
3/4
19.1
60
267
76
338
137
609
9
40
74
329
167
743
618
3/8
9.5
---
3/4
19.1
62
276
76
338
131
583
0
0
56
249
139
618
2-13/16 In. (71 mm) Yoke Boss—Direct- or Reverse-Acting(2) 617 618
1/2
12.7
---
3/4
19.1
26
116
58
258
115
512
29
129
62
276
124
552
1/2
12.7
1
3/4
19.1
17
76
36
160
73
325
19
85
41
182
82
365
1/2
12.7
2
1-1/8
28.6
11
49
23
102
46
205
13
58
27
120
54
240
1/2
12.7
3
2
50.8
7
31
9
40
32
142
9
40
20
89
41
182
1. These values are computed using stainless steel floats, standard lever lengths, and totally submerged in water.
2. These values are computed using stainless steel floats, standard lever lengths, and half submerged in water.
Table 3. Buoyant Force of Floats, FL FLOAT MATERIAL
304 Stainless Steel
FLOAT DIAMETER In.
mm
6
152
2.04
9
7-3/4
197
4.40
20
9-3/4
248
8.75
39
WARNING The float is a sealed container and, if penetrated by the process media, it may retain pressure or hazardous fluid for an extended period. Such a float may contain pressure as a result of being in a pressurized vessel. It may contain fluid that becomes pressurized due to changes in temperature. Or, it may contain process media that is hazardous or flammable. Sudden release of pressure, contact with hazardous fluid, fire, or explosion, can result in personal injury or property damage. The above conditions can occur if a float retaining pressure or process media is punctured, subjected to heat, or repaired. Be careful when removing, storing, handling, or disposing of a float that could be retaining some of the process media. Before performing any maintenance operations: D Be sure the actuator cannot suddenly open or close the valve.
4
BUOYANT FORCE WITH FLOAT HALF-SUBMERGED IN WATER Lbf N
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure from both sides of the valve. Drain the process media from both sides of the valve. D Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment.
Replacing the Float Key number locations are shown in figures 3 and 4 unless otherwise directed. 1. Isolate the control valve from the line pressure, release pressure from both sides of the valve body, and drain the process media from both sides of the valve. Use lock-out procedures to be sure that the above measures stay in effect while you work on the equipment. 2. Remove the hex nut (key 21 or key 14, Type 617 or Type 618) and cap screws (key 20, or key 15).
Type 617 & 618 3. Be careful when removing, and handling the float, (read the Warning above). Remove the float and rod assembly from the lever (key 9 or key 12, see figures 3 and 4).
Parts List
4. Unscrew the float (key 16 or 19) from the float rod (key 15 or key 18).
Key
Type 617 Ball Float Actuator 1
5. Install the replacement float on the float rod. 6. Replace the rod, with the float attached, by re-inserting the cap screws through the lever (key 9 or key 12), and replace the nuts. Refer to the float Adjustment procedures.
Reversing Float Action Figure 2 shows the lever arrangement for first-class and second class lever arrangements. For first-class levers, the fulcrum is located between the valve stem connection and the float rod assembly. For second-class levers, the fulcrum is located outside the distance between the valve stem connection and the float rod assembly Key number locations are shown in figures 3 and 4 unless otherwise indicated. To change an existing float action from a first-class to a second-class lever, or vice versa, perform the following steps: 1. Remove the lever arm (key 9 or key 12, figures 3 or 4) from the actuator by removing the E-rings (key 5) and the lever pin (key 6).
2
3
4
5
6
7
2. Loosen the yoke locknut on the valve yoke boss. 3. Rotate the yoke (key 1) 180 degrees on the valve bonnet. 8
4. Re-tighten the yoke locknut. 5. Re-connect the lever arm to the actuator in a manner consistent with the float action desired (see figure 2). 9
Parts Ordering Each actuator has a serial number stamped on the nameplate. Always mention this number when corresponding with the Fisher sales office or sales representative regarding technical information or replacement parts. Also, reference the complete 11-character part number of each needed part as found in the following Parts List sections.
13
14
Description Yoke 2-1/8 inch (54 mm) yoke boss Cast iron Stainless steel (SST) 2-13/16 inch (71 mm) yoke boss, Stainless steel Hex Nut 2-1/8 inch (54 mm) yoke boss Pl (plated) steel S31600 (3l6 SST) 2-13/16 inch (71 mm) yoke boss Pl steel Jam Nut 2-1/8 inch (54 mm) yoke boss Pl steel S31600 (316 SST) 2-13/16 inch (71 mm) yoke boss, Pl steel Link Pin S30300 (303 SST) (2 req’d) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss E-Ring, (4 req’d) 2-1/8 inch (54 mm) yoke boss Carbon pl steel Stainless steel 2-13/16 inch (7l mm) yoke boss Carbon pl steel Lever Pin, S31600 (316 SST) (2 req’d) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Lever Link, (2 req’d) 2-1/8 inch (54 mm) yoke boss Pl steel S31600 (316 SST) 2-13/16 inch (71 mm) yoke boss Pl steel Clevis 2-1/8 inch (54 mm) yoke boss Iridite(1) S31600 (316 SST) stainless steel 2-13/16 inch (71 mm) yoke boss, Iridite(1) Lever 2-1/8 inch (54 mm) yoke boss Steel S31600 (3l6 SST) 2-13/16 ln. (7l mm) yoke boss Steel Washer 2-1/8 inch (54 mm) yoke boss Carbon pl steel S31600 (316 SST) 2-13/16 inch (71 mm) yoke boss Carbon steel Lockwasher (2 req’d) 2-1/8 inch (54 mm) yoke boss Alloy steel SST 2-13/16 inch (71 mm) yoke boss, Alloy steel
Part Number
2F624319042 2F624333092 2F625019042
1A346524122 1A346535252 1A413224122
1A680324122 1A680335252 1A353724122
1F624435032 1F625135032
1E455328982 1E455338992 1F625228992 1F624535162 1F625335162
1F624625072 1F624636042 1F625425072
1F624744012 1H376935072 1F625744012
1F628125092 1F628136042 00943925092
1B416728982 1C845435072 1B365428992
1A352332992 1A518838992 1A339828992
1. Iridite is a mark owned by WITCO Chemical Corp.
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Type 617 & 618
20A8002-A
Figure 3. Type 617 Ball Float Actuator
Key 15 16
17 18 19
20
21
36 37
6
Description Float Rod, S30400 (304 SST) Float, S30400 (304 SST) 6 inch (152 mm) for 1/2 & 3/4 inch valve sizes 8 inch (203 mm) for 1, 1-1/2, 2, & 3 inch valve sizes 10 inch (254 mm) for 4 & 6 inch valve sizes Weight, cast iron Cap Screw, pl steel Lever Segment 2-1/8 ln. (54 mm) yoke boss Brass S31600 (3l6 SST) 2-13/16 inch (71 mm) yoke boss, Brass Cap Screw (2 req’d) 2-1/8 inch (54 mm) yoke boss pl steel Stainless steel 2-13/16 inch (71 mm) yoke boss, Pl steel Jam Nut (2 req’d) 2-1/8 inch (54 mm) yoke boss Pl steel S31600 (316 SST) 2-13/16 inch (71 mm) yoke boss Pl steel Nameplate, SST Drive screw, SST
Part Number 1A995738332
Type 618 Ball Float Actuator Key
Description
0C052112012 0C052133092
Yoke Assembly, cast iron/bronze (includes bearing) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss 1A Yoke, cast iron 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss 1B Bearing, bronze 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss 2 Hex Nut, pl steel 2-1/8 inch (154 mm) yoke boss 2-13/16 inch (71 mm) yoke boss
0F025712012
3
Part Number
1
1A424236022 1A424336022 1A424636022 2F862919032 1A368424052
4 1A391724052 1A391738992 5 1A336924052 6 1A345724122 1A345735252 1A352224122 0024283X00A2 1A3682289822
7
Hex Nut, pl steel 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (171 mm) yoke boss Guide Link, brass 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (171 mm) yoke boss E-ring, carbon pl steel (6 req’d) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Guide Link Pin, S41600 (416 SST) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Spacer, brass (2 req’d) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss
2F5979000A2 3H1536000A2 2F597919042 3H153619042 1F598418032 1F599718032 1A680324122 1A413224122
1A346524122 1A353724122 1F598314012 1F599614012 1F598128982 1F599428982 1F598535232 1F599835232
1F598714012 1F621014012
Type 617 & 618
BF6316-B
Figure 4. Type 618 Ball Float Actuator
Key 8
9
10 11 12
13
14
Description Lower Link Pin, S41600 (416 SST) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Upper Link Pin, S41600 (416 SST) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Set Screw, carbon steel Weight, cast iron Lever, steel 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Cap Screw, pl steel (2 req’d) 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Hex Nut, pl steel, (2 req’d)
Part Number
1F598035232 1F59933523 1F598635232 1F599935232 1A375028992 0Y056519032
1F632025092 1B161025092 1A336924052 1C403824052 1A375324122
Key
Description
15 16 17 18
Lockwasher, alloy steel, (2 req’d) Washer, carbon steel Lever Segment, brass Float Rod, 304 (SST)
19
Float, S30400 (304 SST) 6 inch (152 mm) for 1/2 & 3/4 inch valve sizes 8 inch (203 mm) for 1, 1-1/2, 2, & 3 inch valve sizes 10 inch (254 mm) for 4 & 6 inch valve sizes Lever Link, pl steel 2-1/8 inch (54 mm) yoke boss 2-13/16 inch (71 mm) yoke boss Nameplate, SST Drive screw, SST
20
21 22
Part Number 1A339828992 1B365428992 0F025712012 1A995738332
1A424236022 1A424336022 1A424636022 2F598225072 1F599525072 0024283X00A2 1A3682289822
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Type 617 & 618
While this information is presented in good faith and believed to be accurate, Fisher Controls does not guarantee satisfactory results from reliance upon such information. Nothing contained herein is to be construed as a warranty or guarantee, express or implied, regarding the performance, merchantability, fitness
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8Printed in U.S.A.
Fisher Controls
or any other matter with respect to the products, nor as a recommendation to use any product or process in conflict with any patent. Fisher Controls reserves the right, without notice, to alter or improve the designs or specifications of the products described herein.
For information, contact Fisher Controls: Marshalltown, Iowa 50158 USA Cernay 68700 France
Sao Paulo 05424 Brazil Singapore 0512