Installation & Operation Instructions Model 3300-0102 & 3300-0103 High Flow Installation

Installation & Operation Instructions Model 3300-0102 & 3300-0103 High Flow Installation
Model 3300-0102 & 3300-0103 High Flow
Balanced Pressure Regulator Valves
Form L-1523
Installation & Operation Instructions
California Proposition 65 Warning -- This product and related accessories contain chemicals known to the State of
California to cause cancer, birth defects or other reproductive harm.
As a relief valve, this valve should be placed in an area that remains pressurized when the gun is shut off.
As a pressure regulator, the valve maintains the pressure in the system (even during flow changes). In this condition,
always use a suitable safety valve. If the bypass is directed directly into the pump, caution should be taken to avoid
excessive water temperature increases.
important :
The bypass port is at the bottom. The inlet port is on the side.
The bypass should be returned to a baffled tank for turbulence control.
Pressure Adjustment/Setting
As a relief valve, the adjustment has to be made in such a way that the pressure setting is not higher than the system’s
working pressure.
As a pressure regulator, adjust the valve when the system is pressurized and the gun is open. As the adjustment cap
is turned, there should be a corresponding change in pressure. To increase the pressure, turn the cap clockwise; to
decrease the pressure, turn the cap counterclockwise. Once the desired pressure is reached, tighten the ring nut to lock
the cap in place.
Specifications for 3300-0102
Max. Flow Pressure Range Max Temp.
Inlet Port
Bypass Port
55 GPM
260-2000 PSI
185º F
3/4” NPT
1/2” NPT
6.25” x 2.00” x 1.50”
208 LM
18-138 BAR
85º C
3/4” NPT
1/2” NPT
159 x 50 x 38 mm
185º F
1” NPT
1” NPT
6.25” x 2.90” x 1.65”
Specifications for 3300-0103
55 GPM
208 LM
260-2000 PSI
18-138 BAR
85º C
1” NPT
1” NPT
159 x 74 x 42 mm
Order Information
Part No.
3/4” NPT Inlet x 1/2” NPT Bypass Model
1” NPT Inlet x 1” NPT Bypass Model
Piston and Seat Repair Kit
Valve chatters
Valve is installed improperly (inlet & bypass may be reversed).
Valve is missing its orifice washer.
Valve is improperly set; repeat adjustment process.
Valve continually bypasses
Seat or piston worn; replace as needed.
Valve is improperly set; repeat adjustment procedure.
Leaking out the top of valve
O-ring and piston are worn or cut. Install repair kit.
Instructions / Parts Drawing
Installation Instructions for Piston Seal Kit No. 3430-0747
1. Remove the adjustment cap from the top of the valve assembly.
2. Once cap is removed, the spring and spring plate can be removed.
3. Using a .625 (5/8”) hex wrench, unscrew and remove the old sleeve and
piston assembly.
If the orifice washer didn’t come out with the sleeve assembly, use a valve extractor tool (Hypro P/N 3010-0057), to reach down inside the body. Place the extractor inside the orifice hole, expanding the tool, and then pull up, removing the SST orifice washer as shown in Figure 1. (This part is re-used so do not discard it.)
5. Using the same extractor tool, reach down inside the body and remove the seat by placing the extractor inside the seat hole, expanding the tool, and
then pulling up, removing the SST seat as shown in Figure 2.
6. Reassemble the new 3430-0747 kit in the reverse order as disassembly.
7. See Figure 2 for proper assembly direction of the new SST seat ring.
Seat must be installed with identification ring up as shown.
8. Orifice washer must be reassembled after seat and before installation of
new sleeve assembly or valve operation will be compromised.
Fig. 2
O-rings on seat and outer sleeve should be lubricated prior to assembly to ensure proper sealing.
Piston and sleeve assembly should not be disassembled for any reason.
It is lubricated at the factory and should remain assembled as a unit.
No. 3430-0747 Kit
Piston and Seat
Repair Kit
Part No. 3430-0747
3300-0103 Model Only
Hypro 2012
Printed in the USA
375 Fifth Avenue NW • New Brighton, MN 55112
Phone: (651) 766-6300 • 800-424-9776 • Fax: 800-323-6496
w w w.h y p ro p u m p s .c o m
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