Model: 11-878

Pressure And Temper Relief Valve

Special Features:

Fully open: 165 degrees and below; starts to close: 165-180 deg; fully closed: 180 deg; fluid: mil-h-83282; valve cracking pressure: 40 psid max, at 190-195 degrees f; valve to reseat at 30 psid min

Properties:

Body Material
Aluminum alloy, qq-a-200/8, alloy 6061, t6
Outside Surface Treatment
Anodized, mil-a-8625, type 2
Body Style
Straight thru
Stem Material
Aluminum alloy, qq-a-200/8, alloy 6061, t6
Tempurature Rating
-65.0 degrees fahrenheit and 320.0 degrees fahrenheit
Media For Which Designed
Oil
First End Flange Shape Style
Oval w/ bolt holes
First End Flange Thickness
0.125 inches
First End Flange Length
1.812 inches
First End Flange Width
0.875 inches
First End Flange End Radius
0.250 inches
First End Bolt Hole Quantity
2
First End Bolt Hole Diameter
0.221 inches
Second End Relationship With First End
Not identical
Second End Style Designator
Grooved
Seat Material
Aluminum alloy, qq-a-200/8, alloy 6061, t6
Body Outside Diameter
0.798 inches
Flow Control Device
Stem and integral disk
Tempurature Control Device Type
Thermostatic
First End Center To Center Distance Between Holes Along Length
1.312 inches
Part Name Assigned By Controlling Agency
Valve bypass hydr; valve, bypass thermal and pressure
NSN
4820-01-646-5998
Part Number
11-878
Description
Valve,relief,pressure And Temper
CAGE
27195

A valve designed to release under excessive pressure and/or excessive temperature by opening at a predetermined pressure and/or temperature. Thermostatically operated valves close when the pressure is relieved or the temperature is reduced. Fusible plug valves require replacement of the plug. See also valve, safety relief and valve, regulating. Temperature.

Part 11-878 NSN 4820-01-646-5998

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16996
FIIG:
A07100
Concept No.:
1
App. Key:
AR
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:
A
ESD:
A
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
--
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:
127220
UFC:
64490
LTL:
77.5
LCL:
--
WCC:
594
TCC:
Z
SHC:
9
ACC:
Trailers/Vehicles

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Schedule B and Export
  • Schedule B: 8481400000
  • SITC: 74740
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Safety or relief valves

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