Type 67AFD
Fisher Controls
Instruction Manual
Type 67AFD Filter
February 1991
Installation WARNING
Scope of Manual This manual describes and provides instructions and parts list for the Type 67AFD filter. This filter is usually shipped installed on other equipment such as valve positioners. Instructions and parts lists for other equipment are found in separate manuals.
Product Description The Type 67AFD aluminum-body filter with drip pot (figure 1) removes dirt, moisture, and other particles from air or gas lines. This filter is commonly used in the supply pressure line to a pneumatic instrument. The filter element removes particles greater than 0.0016 inch (0.040 mm) in diameter.
Specifications Table 1 gives some general Type 67AFD filter ratings and other specifications. A nameplate (figure 2) gives additional information for a given filter as it comes from the factory.
Installing a filter where its capabilities, or those of any downstream equipment, can be exceeded may cause personal injury or property damage due to bursting of pressure-containing parts or explosion of accumulated gas. To avoid this, install the unit where: • Service conditions are within unit capabilities (including those given in table 1), • Service conditions are within applicable local, state, or federal codes or regulations, • The unit is protected from exposure to physical damage and /or corrosive substances, and • Suitable pressure-limiting or pressurerelieving devices have been installed in those instances where supply pressure is capable of exceeding the maximum allowable downstream equipment pressure.
W3710
18A6732-A Sht 1
Figure 1. Exterior View of Type 67AFD Filter
©Fisher Controls 1982; All Rights Reserved
Figure 2. Filter Nameplate
D100252X012
Introduction
Form 5202
Type 67AFD Table 1. Specifications
BODY SIZE AND END CONNECTION STYLE
MAXIMUM ALLOWABLE INLET AND OUTLET PRESSURE
1/4 in. NPT screwed
Free Area: 12 times pipe area Micron Rating: 40
MATERIAL TEMPERATURE CAPABILITIES
Standard Elastomers: -20° to 150° F (-29° to 66° C) High-Temperature Elastomers: 0° to 350° F (-18° to 177° C)
APPROXIMATE WEIGHT
1-1/2 lb. (0.68 kg)
250 psig (17 bar)
1. Use qualified personnel when installing, operating, and maintaining this filter. Before installing, inspect the filter for any damage or for any foreign material that may have collected in the body. Note If the filter is shipped mounted on another unit, install that unit according to the appropriate instruction manual. 2. For a filter that is shipped separately, make sure that there is no damage to or foreign material in the filter and that all tubing and piping have been cleaned. Install the filter so that flow is from the IN to the outlet connection on the side of the filter body. If desired for mounting convenience, change the pipe plug (key 5, figure 3) to the side outlet connection and (if used) the pipe nipple (key 13, not shown) to the OUT connection, after first applying John Crane Plastic Lead Seal* sealant or equivalent to the threads of the pipe plug. 3. For best filter drainage, orient the drain valve (key 7, figure 3) to the lowest possible point on the filter cap (key 2, figure 3). To change filter/drain valve orientation, rotate the filter cap with respect to the regulator body. 4. If using pipe, apply pipe compound to the pipe threads before making the connections. Install tubing or piping into the 1/4-inch NPT inlet connection, and also into the 1/4inch NPT outlet connection (unless this connection already has been factory-piped to another unit).
Maintenance Filter parts are subject to normal wear and must be inspected and replaced as necessary. The frequency of inspection and replacement depends on the severity of service conditions and the requirements of local, state, and federal rules and regulations. The drain valve (key 7, figure 3) should be opened periodically to empty accumulated moisture from the filter cap (key 2, figure 3).
2
FILTER CAPABILITIES
WARNING To avoid personal injury or equipment damage caused by sudden release of pressure or explosion of accumulated gas, do not attempt any maintenance or disassembly without first isolating the filter from system pressure and relieving all internal pressure from the filter. This procedure is to be performed if inspecting, cleaning, or replacing any parts. Key numbers refer to figure 3. Note If sufficient clearance exists, the body assembly (key 1) may remain mounted on other equipment or in a line unless the entire filter will be replaced. 1. To gain access to the filter element (key 3) for replacement or cleaning, use a twelve-point socket wrench to remove the cap screws (key 10), and then remove the filter cap (key 2) and gasket (key 6). The retainer assembly (key 4) and filter element (key 3) may come off with the filter cap; if not, remove these parts. Be careful to keep the parts from falling out and possibly getting lost. 2. Inspect the removed parts, and replace as necessary. A dirty filter element may be cleaned with solvent and blown dry.
Parts Ordering When corresponding with the Fisher sales office or sales representative about this regulator, include the type number and all other pertinent information stamped on the bottom of the filter cap and on the nameplate. Specify the elevencharacter part number when ordering new parts from the following parts list.
* Trademark of John Crane Packing Co.
Type 67AFD
38A6734-B
Figure 3. Type 67AFD Filter Assembly Drawing
Parts List Key
Description
Key Part Number
Repair Kit Kit includes keys 3, 4, 6, and 7. Drain valve is brass and gasket is neoprene. With cellulose filter element R67AFD X0L12 With stainless steel filter element R67AFD X0L22
Description
Part Number
Individual Parts 1
Body, aluminum w/electrodeposition paint 38A6735 X012 2 Filter Cap, aluminum 35A5963 X032 † 3* Filter Element Cellulose, 40 microns 1F2577 06992 Stainless steel, 40 microns 15A5967 X012 4* Retainer Assembly,† zn pl steel/ stainless steel 17A9423 X012
Key
6* Gasket Neoprene† (standard) Fluoroelastomer (high-temperature) 7 Drain Valve Brass† Aluminum Stainless steel 8 9 10
5
5
Pipe Plug Pl steel 1D7548 28982 Brass 1A5726 14012 Steel 1C3335 28992 Pressure Gauge‡ (not shown) 0 to 30 psig 1J9460 99012 0 to 60 psig 1J9752 99012 0 to 100 psig 1J9753 99012 0 to 160 psig 1J9754 99012 0 to 200 psig 1J9756 99012 0 to 300 psig 1J9755 99012
* Recommended spare part. † Included in repair kit. ‡ Consult your Fisher sales office or sales representative for gauges in other units.
Description
11
Nameplate, aluminum Machine Screw, pl steel (2 req'd) Cap Screw, zn pl steel (4 req'd) Pipe Plug, pl steel
Part Number
1C1280 03012 1C1280 X0012 1K4189 18992 1K4189 000B2 AH3946 000B2 18A6732 X012 1B7839 28982 1K7647 24052 1E8231 28982
12
John Crane Plastic Lead Seal Sealant, 1 lb. (0.453 kg) can (not furnished with filter) 1M3307 06992
13
Pipe Nipple (for nipple-mounting filter on 3611 Series positioner), 304 stainless steel (not shown) 1B2927 38322
3
Type 67AFD
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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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
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