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Type 1805P
Assembly
1. If removed, install the body plug O-ring (key 13)
over the body plug (key 3), and install the body plug
into the body (key 1).
2. Install the stem guide (key 9), if removed, and
make sure to install the O-ring or gasket (key 36)
between the body (key 1) and the stem guide.
In step 3, if installing a different size
restriction, be sure to remove the code
letter (h - high, M - Medium, l - low) on
the bottom of the pilot and indicate the
new letter.
3. If the restriction (key 20) was removed, coat the
threads with lubricant and install it.
4. If replacing the stem O-ring (key 37), sparingly
apply lubricant and install the O-ring over the valve
plug (key 4).
5. If removed, install the valve plug (key 4) and valve
spring (key 14) into the diaphragm assembly
(key 5). Install a replacement O-ring or gasket
(key 36) on the diaphragm assembly, and secure
with the connector cap (key 6).
6. Install the diaphragm assembly (key 5) and push
down on it to see if the valve plug (key 4) moves
smoothly. The diaphragm assembly should stroke
approximately 1/16-inch (1,6 mm) after the valve
plug contacts the port.
In step 7, if installing a control spring of
a different set pressure range, be sure
to remove the set pressure range on the
spring case and indicate the new range.
7. Place the control spring (key 7) and the control
spring seat (key 8) on the diaphragm assembly
(key 5).
*Recommended spare part
6
note
note
8. Install the spring case (key 2) on the body (key 1)
with the vent assembly (key 16) oriented to
prevent clogging or entrance of moisture.
Install the machine screws (key 17) and tighten in
a crisscross pattern, using 5 to 7 foot-pounds
(6,8 to 9,5 N•m) of torque.
9. Replace the closing cap gasket (key 19) if
necessary, and install the closing cap (key 12).
Parts Ordering
When corresponding with your local Sales Office about
this equipment, always reference the equipment serial
number or FS number that can be found on
the nameplate.
When ordering replacement parts, reference the key
number of each needed part as found in the following
parts list.
Parts List
Type 1805P Main Valve (Figure 3)
Key
Description
1
Valve Body, Cast iron
2
Valve Guide Orifice, Anodized aluminum
3*
O-ring, Nitrile (NBR)
4
O-ring Holder, Aluminum
5*
O-ring, Nitrile (NBR)
6
O-ring Washer, Stainless steel
7
Machine Screw, Steel
8*
Diaphragm, Nitrile (NBR)
9
Diaphragm Plate, Brass
10
Cap Screw, Zinc-plated steel
11
Spring, Zinc-plated steel
10 to 30 psig (0,69 to 2,1 bar), Pink
30 to 100 psig (2,1 to 6,9 bar), Unpainted
12
Spring Seat, Steel
13
Spring Case, Cast iron
14
Set Screw, Zinc-plated steel
15
Locknut, Zinc-plated steel
16
Union Nut, Ductile iron
17
Closing Cap, Brass
18
Nameplate, Aluminum
19
Drive Screw, Steel (4 required)
Part number
1E824319012
1N939909012
1N940306562
1E824609092
1C5622X0022
1E824235072
1B420428982
1E824102052
1E824714012
1E760324052
1F826927052
1D751527022
1D667125072
2E824919042
1D995448702
1H483324122
1E766619062
1E823914012
- - - - - - - - - - -
1E501728982
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