Farris Engineering 1890 Series Maintenance Manual Download Page 10

10195 Brecksville Road,  Brecksville, OH 44141 USA  Telephone: (440) 838-7690  Fax (440) 838-7699  www.cwfc.com

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Farris Engineering, Brecksville, Ohio USA                                                                                                             Farris Engineering, Brantford, Ontario

While this information is presented in good faith and believed to be accurate, Farris Engineering does not guarantee satisfactory results from reliance upon such 
information. Nothing contained herein is to be construed as a warranty or guarantee, expressed or implied, regarding the performance, merchantability, fitness or any
other matter with respect to the products, nor as a recommendation to use any product or process in conflict with any patent. Farris Engineering reserves the right,
without notice, to alter or improve the designs or specifications of the products described herein.

Printed in USA

9/98 5M R1

Farris Engineering

Division of Cur tiss-Wright Flow Control Corporation

Visit www.boighill.com to request a quote.

Visit www.boighill.com to request a quote.

Summary of Contents for 1890 Series

Page 1: ...cal Manual 296T Series 1890 2850 Maintenance Manual Farris Engineering Division of Curtiss Wright Flow Control Corporation Visit www boighill com to request a quote Visit www boighill com to request a...

Page 2: ...w trained maintenance personnel to properly repair types 1890 1892 2850 and 2852 pressure relief valves All of the assembly and disassembly instructions refer to types with plain screwed caps When rep...

Page 3: ...during disassembly split rings may fall free Current valves do not use a stem shoulder and split ring The stem shoulder is an integral part of the stem 10 Lift the stem with the disc attached If desi...

Page 4: ...s Engineering Division of Curtiss Wright Flow Control Corporation Bill of Materials Item Part Name Material 1890 1892 1890 S4 1892 S4 SA 479 Type 316 SA 479 Type 316 1 Body St St St St SA 216 Gr SA 35...

Page 5: ...jam nut and stem test washer 4 Reassemble in reverse order making sure the camshaft lobe is pointing down The stem test washer should be adjusted to ensure the cam will make contact with the stem tes...

Page 6: ...ATES PART NO MAT CODE SIZE THICKNESS 7688 164 1 1 2 l 4 7689 164 2 1 4 3 8 2 Use Farris 1200 lapping compound When lapping the disc operate with a light figure eight motion over entire block surface I...

Page 7: ...blowdown ring notches without jamming the ring in its tightened posi tion 15 The valve is now ready to be removed for testing 6 Series 1890 and 1892 1 Refer to Figure 2 2 for construction details 2 V...

Page 8: ...while loading the spring 3 Slowly raise the test drum pressure and observe the opening point The set pressure on air or steam is the pop point while on water it is the first continuous flow 4 If neces...

Page 9: ...Curtiss Wright Flow Control Corporation SERIES SIZE A A1 B C C1 D E F G H J K L 2850 3 4 X 1 7501 7852 8103 1254 1254 0151 284 700 894 459 1 X 1 1 2 1 0001 1 0372 1 0603 1254 1254 0151 331 950 1 125 6...

Page 10: ...contained herein is to be construed as a warranty or guarantee expressed or implied regarding the performance merchantability fitness or any other matter with respect to the products nor as a recommen...

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