Model: A51H209-3

Restrictor Check Valve

Special Features:

The end connection identified above as the second end is the valve inlet

Properties:

Thread Class
3a 2nd end
Thread Class
3b 1st end
Thread Direction
Right-hand 2nd end
Thread Direction
Right-hand 1st end
Flow Control Device
Poppet
Disk Loading Method
Spring
Maximum Operating Temp
275.0 degrees fahrenheit single response
Connection Style
External seat for gasket seal (boss) 2nd end
Connection Style
Gasket seal (boss) 1st end
Valve Operation Method
Automatic
Connection Type
Threaded external boss 2nd end
Connection Type
Threaded internal boss 1st end
Mounting Position
Horizontal or vertical
Thready Qty Per Inch (tpi)
20 1st end
Maximum Operating Pressure
3000.0 pounds per square inch single response
Thread Size
0.437 inches 1st end
Thread Size
0.437 inches 2nd end
Outside Diameter Tube Accommodated
0.250 inches 1st end
Outside Diameter Tube Accommodated
0.250 inches 2nd end
Material
Aluminum alloy 518.0 seat
Material
Aluminum alloy 518.0 body
Surface Treatment
Anodize
Style Designator
Straight thru
Thread Series Designator
Unf 2nd end
Thread Series Designator
Unjf 1st end
NSN
4820-00-485-7841
Part Number
A51H209-3
Description
Valve,restrictor Check
CAGE
61174

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 A51H209-3 NSN 4820-00-485-7841

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

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
051080
UFC:
29300
LTL:
RATING VARIABLE
LCL:
--
WCC:
736
TCC:
Z
SHC:
9
ACC:
Construction Materials

Pricing & Availability Check

Submit this form for stock availability and pricing.
Part Number:
Quantity:
Email Address:
Phone Number:
Your Name:
Company:



Privacy Policy    Terms & Conditions

How to Order  

Ordering from buyaircraftparts.com

If you would like to order this restrictor check valve (NSN 4820-00-485-7841) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours: 08:00-18:00 Eastern Standard Time
Phone: +1 470-231-0824
Email: Contact Form »
Schedule B and Export
  • Schedule B: 8481309000
  • SITC: 74730
  • End Use: Industrial machines, other
  • NAICS: 332911
  • USDA: 1

Freight Class: Check valves of materials other than copper, iron or steel

Highest Rated Parts
Recently Purchased Parts
Hot Parts