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Item # 180-T-1/4, 1/4" Y Blow-Off Valve

Lunkenheimer Fig. 180-T "Y" Blow-off valves are designed for up to 300 SP service. They are similar to the Fig, 180. except that the seat is internal bronze, the disc is Teflon.

Bodies and Bonnets ASTM B61 type S-1 Steam Bronze
Seat opening permits almost unrestricted flow. Cylindrical guides insure proper disc seating.

Union Bonnet
Assures strong, pressure-light connections, facilitates cleaning and inspection.


Back Seats
Repackage when disc is wide open under pressure.

Specifications  · Principal Parts and Materials



1/4 in

Dim. A

5 3/18 in

Dim. E

7 1/11 in

Dim. G

4 2/3 in

Dim. M

4 1/2 in

Dim. H

14 in


5.8 lb

Body Material

Bronze with Teflon Seat

Principal Parts and Materials
Part Fig Material ASTM
Body & Bonnet   S-1 Steam Bronze B61
Disc 180 NT Nickel Alloy  
180-T Teflon
Stem   Stemalloy, Rod B371
Seat Ring 180 NT Nickel Alloy  
180-T Integral/Bronze
Packing   JC168 Kevlar  

Bronze Valves comply with ANSI B1624 arc MSS-S5P-80


(PDF, 1459KB)