Liquid Controls Air Actuated & Differential Check Valves K-7, K-15, & K-30 - Manual (Page 7)

7
K-15 Valves
Disassembling the K-15 Valve
NOTE: Refer to the illustrated parts breakdown to the right
for Item Numbers referenced in these instructions. Item
Numbers appear in circles in the drawing.
1 Use a fixture to press and hold the valve check guide
(Item 14) in place with the compression spring (Item
15) compressed.
2 Remove the two screws (Item 2).
3 Release the pressure from the check valve guide (Item
14) until the spring (Item 15) exerts NO pressure.
4 Remove the check valve guide (Item 14), Quad Ring
(Item 16), O-Ring (Item 9) , lock ring (Item 5),
compression spring (Item 15) and piston (Item 11).
5 Remove the retainer seal and retaining ring (Items
13 & 7), and the spring seal (Item 8).
6 Leave the Heli-Coil inserts in place.
Reassembling the K-15 Valve
1 Insert the four Heli-Coil Inserts (Item 6) into the air
check housing (if they were removed).
2 Place the Quad Ring (Item 16) onto the large end of
the piston (Item 11).
3 Place the check valve guide (Item 14) into the piston
(Item 11).
4 Slide the Quad Ring (Item 16) onto the check valve
guide (Item 14) and into the groove at the flanged
end.
5 Insert the O-Ring (Item 9) with the spring facing up
onto the step on the check valve guide (Item 14).
6 Insert the lock ring (Item 5) over the O-Ring (Item 9).
7 Place the check valve guide (Item 14) into the piston
(Item 11).
8 Place the seal (Item 8) into the retainer seal (Item
13) from the end with the large chamfer and the spring
(Item 15) in the seal (Item 8).
9 Insert the retaining ring (Item 7) into the groove of
the retainer seal (Item 13) and place them into the air
check housing (Item 12) with the chamfered end
down. Carefully press in while visually inspecting
alignment. Once alignment is adjusted, press in until
seated.
10 Insert the compression spring (Item 15) into the
bottom of the air check housing (Item 12).
11 Place the piston (Item 11) over the compression spring
(Item 15).
12 Carefully align the piston (Item 11) with the retainer
seal (Item 13) and press down until the flange of the
check valve guide (Item 14) is flush with the housing.
This will require the use of a fixture to overcome the
pressure of the spring (Item 15).
13 While holding the check valve guide in place, insert
the two screws (Item 2) and tighten.
14 Remove the assembly from the fixture.