Model: 1578 25IN-C056950REV0/883030066

Stop-check Valve

Special Features:

Valve size 2-1/2 in.

Properties:

Flow Control Device
Disk
Bonnet Type
Outside screw-yoke
Bonnet Attachment Method
Bolted
Renewable Seat Ring Type
Welded
Bolt Hole Quantity
4 all ends
Maximum Operating Temp
650.0 degrees fahrenheit single response
Valve Operation Method
Manual
Flange Shape
Round with holes all ends
Connection Type
Flange all ends
Mounting Position
Horizontal
Maximum Operating Pressure
150.0 pounds per square inch single response
Outside Diameter
7.000 inches all ends
Thickness
0.625 inches all ends
First Connection Face To Centerline Distance
4.250 inches
Bolt Hole Diameter
0.750 inches all ends
Second Connection Face To Centerline Distance
4.250 inches
Bolt Circle Diameter
5.500 inches all ends
Flange Face Design
Plain all ends
Material
Steel body
Material
Stainless steel stem
Material
Steel flow control device
Material
Steel seat
Material Specification
Astm a105, grade 2 assn standard single material response body
Material Specification
Mil-r-17131, mil-r-cocr-a military specification single material response flow control device
Material Specification
Mil-r-17131, mil-rcocr-a military specification single material response seat
Media For Which Designed
Steam single response
Style Designator
Angle
NSN
4820-01-011-3606
Part Number
1578 25IN-C056950REV0/883030066
Description
Valve,stop-check
CAGE
48422

A valve with a bolt or stem that may be mechanically actuated to two different positions by rotary or linear motion. In the first position, the valve disk is located and locked against the seat permitting no fluid flow through the valve. In the second position, one side of the valve disk is located against the seat permitting movement of the disk in a manner that will allow a flow of fluid in one direction through the valve. The valve disk may be spring loaded. It may be inline or cartridge (manifold) design. See also valve (1), lift-check and valve (1), stop-lift-check.

Part 1578 25IN-C056950REV0/883030066 NSN 4820-01-011-3606

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05486
FIIG:
A530B0
Concept No.:
1
App. Key:
Cond. Code:
2
Status:
A

Material Classification

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

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
86.0000lbs
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: 8481302090
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of steel

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