Specifications; Principle Of Operation - Fisher 1301F Instruction Manual

Types 1301F and 1301G

Specifications

Available Configurations
Type 1301F: Direct-operated, high-pressure
reducing regulator for inlet pressures to 6000 psig
(414 bar) and outlet pressure ranges from 10 to
225 psig (0,69 to 15,5 bar) in three ranges
Type 1301g: Direct-operated, high-pressure
reducing regulator for inlet pressures to 6000 psig
(414 bar) and an outlet pressure range of 200 to
500 psig (13,8 to 34,5 bar)
Body Size and End Connection Style
NPS 1/4, NPT (one inlet and two outlet
connections), CL300 RF, CL600 RF, and
CL1500 RF; or PN 25 RF (all flanges are
125 RMS)
Maximum allowable inlet Pressure
air and gas: 6000 psig (414 bar)
Liquid:
Polytetrafluoroethylene (PTFE) Disk:
1000 psig (69,0 bar)
Nylon (PA) Disk:
Water: 1000 psig (69,0 bar)
Other Liquids: 2000 psig (138 bar)
Outlet Pressure Ranges
See Table 1
Maximum Emergency Outlet Pressure
Type 1301F: 250 psig (17,2 bar)
Type 1301g: 550 psig (37,9 bar)
Wide-Open Flow Coefficients for Relief Valve Sizing
C : 5.0
g
C : 0.13
v
1. The pressure/temperature limits in this Instruction Manual and any applicable standard or code limitation should not be exceeded.
2. Fluorocarbon (FKM) is limited to 180°F (82°C) hot water.

Principle of Operation

The 1301 Series regulators are direct-operated.
Downstream pressure is registered internally through
the body to the underside of the diaphragm. When
downstream pressure is at or above set pressure,
the disk is held against the orifice and there is no
flow through the regulator. When demand increases,
downstream pressure decreases slightly allowing the
2
IEC Sizing Coefficients
Recovery Coefficient
Material Temperature Capabilities
(1)
Pressure Registration
Orifice Size
Spring Case Vents
(1)
approximate Weight
regulator spring to extend, moving the yoke and disk
assembly down and away from the orifice. This allows
flow through the body to the downstream system.
As the downstream pressure reach its setting, it started
to overcome the spring force which is sense by the
diaphragm, moving the yoke and disk assembly up and
near its orifice, restricting the flow across the regulator.
C : 38.5
1
X : 0.938
T
F : 0.50
D
F : 0.85
L
K : 0.72
m
Nylon (PA) Valve Disk and
neoprene (CR) gaskets:
-20° to 180°F (-29° to 82°C)
PTFE Valve Disk and Fluorocarbon (FKM)
gaskets: -20° to 400°F (-29° to 204°C)
PTFE Valve Disk and Ethylenepropylene (EPDM)
gaskets: -40° to 300°F (-40° to 149°C)
Internal
5/64-inch (2,0 mm)
Type 1301F Brass Spring Case: Four 5/32-inch
(4,0 mm) holes
Type 1301F Stainless Steel Spring Case:
One 1/4 NPT connection
Type 1301g Spring Case: One 1/8 NPT
connection with screen
8 pounds (4 kg)
(1)
(2)