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March 28, 2013 • <br />HIKINGTECHNICAL DA4TA <br />DRY VALVE <br />MODEL F-1 <br />Dry 1201 <br />The Viking Corporation, 210 N Industrial Park Drive, Hastings MI 49058 <br />Telephone: 269-945-9501 Technical Services: 877-384.5464 Fax: 269.818-1680 Email: techsvcs@vikin9corp.com <br />c Replace and tighten hex head screw (17) DO NOT over-lighlen <br />9 To Remove Clapper Assembly (5) <br />a While holding spring loaded clapper arm assembly (8) down, remove a retaining ring (7) from one end of the clapper <br />rod (6a) <br />b. Release the spring -loaded clapper arm assembly (8) and allow it to latch in the open position <br />c Slide the rod (6a) out of the clapper arm assembly (8) to free the clapper assembly (5). <br />d. Remove the clapper assembly (5) for inspection or replacement <br />10. To Re -install Clapper Assembly (5). <br />a Reverse disassembly procedures a through d in step 9 above. <br />11 To Remove the Latch (2). <br />a. Remove the'W NPT pipe plug (4) (outside of the valve) to expose the latch pin (3), <br />b. While holding the latch (2) with one hand, remove the latch pin (3). <br />c Remove the latch (2). <br />12 To Re-instali the Latch (2) and Latch Pin (3), reverse disassembly procedures a through c in step 11 above. <br />The internal member assembly of the dry valve consists of several sub -assemblies To service these sub -assemblies, it is necessary <br />to disassemhle the dry valve <br />13 To Disassemble The Dry Valve <br />a Disconnect the trim and remove the valve from the system piping <br />b. Use dry valve reset bar/wrench, part number 02977BM, to remove hand -hole cover bolts (21) from the base (22). <br />c. Remove the housing (1) from the base (22) Member assembly components (5-15), and (17-19, 21, 25) are accessible for <br />replacement. <br />d. When inspection andfor replacement of member assembly components is complete, re -assemble the dry valve. <br />14 To Re -assemble the Dry Valve <br />a Reverse disassembly procedures a through c in step 13 above <br />b The socket -set screw (23) will need adjustment After the valve has been completely reassembled, latch the clapper in <br />place. With a 114" (6 35 mm) Allen wrench, turn the screw clockwise until it contacts the hook assembly (15) Then, turn <br />the screw one complete turn counter -clockwise. Set the system and trip test the valve to verity proper operation of the <br />valve <br />15. To Remove the Hook Assembly (15): <br />a Remove a retaining ring (7) from one end of the hook rod (6b) <br />b. Slide the rod (6b) out of the bushings in the air plate assembly (11) to free the hook assembly (15) <br />C Remove the hook assembly (15) <br />16 To Re -install the Hook Assembly (15): <br />a Reverse the disassembly procedures a through c in step 15 above <br />17 To Remove the Clapper Arm Assembly (8) and Spring (9). <br />a Remove a retaining ring (7) from one end of the clapper arm rod (10). <br />b. Slide the clapper arm rod (10) out of the bushings in the air plate assembly (11) to free the clapper arm assembly (8), <br />taking care to retrieve the spring (9) <br />c Remove the clapper arm assembly (8), and spring (9). <br />16 To Re -install the Clapper Arm Assembly (8). <br />a. Reverse disassembly procedures a through c in step 17 above <br />19 To remove the Diaphragm (12) and Diaphragm Retainer (13). <br />a Use a 9116" wrench to remove the hex -head screws (14). <br />b Remove the diaphragm retainer (13) and diaphragm (12) for replacement. If the diaphragm rubber shows signs of wear, <br />such as cracking or cuts. replace the rubber diaphragm. <br />20 To Re -install the Diaphragm (12) and Diaphragm Retainer (13) <br />a. Reverse disassembly procedures a and b in step 19 above <br />to When re -installing the diaphragm retainer (13), cross tighten hex -head screws (14) to 20 It Ibs of torque for even com- <br />pression of the diaphragm (12). <br />c When assembling the base (22) to the housing (1). <br />i. Invert the housing (1) on a work bench so the holes for the hand -hole cover bolts (21) are facing up <br />u Position the complete member sub -assembly (5.15 8 17-19, 21. 25) with the screw holes In the diaphragm (12), <br />aligned with the screw holes in the inverted housing (1) Use care to align the screw holes so the hook assembly <br />(15) properly aligns with the set screw (23). <br />pi. Position the base (22) over the inverted housing (1) with the member assembly (5-15 8 17.19. 21, 25) Align the <br />­.., kmlo< on fho �t' HS mml NPT trim rnnnerimn in thn hase r72) aliens with the %" (15 mm) NPT trim connec- <br />