Model: 1656341

Restrictor Check Valve

Special Features:

Ported brass ball in secondary ofifice

Properties:

Thread Direction
Right-hand all ends
Flow Control Device
Disk
Disk Loading Method
Spring
Renewable Seat Ring Type
Pressed-in
Connection Style
Plain, optional end (pipe) all ends
Valve Operation Method
Automatic
Connection Type
Threaded internal pipe all ends
Mounting Position
Horizontal
Maximum Operating Pressure
1000.0 pounds per square inch single response
Thread Size
0.250 inches all ends
Material
Copper alloy 360 body
Material
Rubber butadiene-acrylonitrile class nbr packing
Material
Stainless steel flow control device
Material Specification
Mil-g-1149, type 2, class 5 military specification single material response packing
Material Specification
Qq-b-626, alloy 360 federal specification single material response body
Media For Which Designed
Air 1st response
Media For Which Designed
Butane 2nd response
Media For Which Designed
Fuel/oil, hydrocarbon 3rd response
Media For Which Designed
Helium 4th response
Style Designator
Straight thru
Supplementary Features
Additional flow control device: stem
Thread Series Designator
Npt all ends
Furnished Items And Quantity
1 nut
NSN
4820-01-013-9721
Part Number
1656341
Description
Valve,restrictor Check
CAGE
72352

A valve having an orifice in the poppet, disk, or the like, to permit restricted fluid flow when the valve is seated. It does not have a stem or provisions for pressure adjustments, and is similar to a valve, check with the exception of the orifice which permits fluid flow in more than one direction.

Part 1656341 NSN 4820-01-013-9721

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
20520
FIIG:
A530B0
Concept No.:
1
App. Key:
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.8000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
Q
LVL_B:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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Schedule B and Export
  • Schedule B: 8481301090
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of copper having a pressure rating of 850 kpa or over

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