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NELSON QUICK COUPLING VALVE
2" QC SPECIFICATION
The Nelson Quick Coupling (QC) valve and key are designed to be used in conjunction
with the Nelson SR75 and SR100 sprinkler guns. The valve, key and sprinkler are
necessary for operation.
The valve inlet is to be connected to the water supply pipe system. The valve can be installed below ground level in
a 10 inch round valve box or above ground level on a supported riser pipe of 2" or 3" diameter size. The valve outlet
is normally closed to flow and can be opened only with the quick coupling key.
The key is designed in such a manner as to allow direct connection to the sprinkler gun base. The key can also be
connected to the sprinkler gun using a 2 inch diameter male x male nipple (the maximum nipple length approved is
12 inches). The key is designed to connect directly to the valve. The key is easily attached to the valve by a quick one-
quarter turn that locks the key and valve together.
Opening the valve is done by connecting the key hydraulic pilot to the valve. The key operates hydraulically pressing
the valve seat to the open condition. When the valve is opened, the hydraulic pressure locks the valve, key and gun
together to become a very ridged and stable unit
Operating Range
Pressure range:
Flow rate:
Water temperature range: 32
Materials Specifications
Product
Valve Body
Valve trim
Seals (both valve and key) BUNA N
Key body
Key Diaphragm
Internal springs
Pilot hose
Application fluid:
Air venting design:
Nelson Irrigation Corp. 848 Airport Rd. Walla Walla, WA 99362-2271 USA Tel: 509.525.7660 Fax: 509.525.7907 E-mail: info@nelsonirrigation.com Web site: www.nelsonirrigation.com
GUN AND VALVE COMBINATIONS
30 psi minimum, 125 psi maximum
25 gpm minimum, 250 gpm maximum
F to 150
F
o
o
Materials:
Cast Iron and Brass
Brass
Stainless Steel and Cast iron/aluminum
Buna N/Dacron
Stainless steel
Buna N
Water only.
The Nelson QC valve is designed to manually vent the air that may be
trapped under the valve. This can be done by using the pilot opening
handle to vent the air before connecting the key.
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