US 12,320,439 B2
Dart valve
Justin Poehls, Glen Rose, TX (US); and David Figgs, Fort Worth, TX (US)
Assigned to SPM Oil & Gas Inc., Forth Worth, TX (US)
Filed by SPM Oil & Gas Inc., Fort Worth, TX (US)
Filed on Apr. 6, 2023, as Appl. No. 18/296,610.
Prior Publication US 2024/0337325 A1, Oct. 10, 2024
Int. Cl. F16K 15/06 (2006.01); F16K 27/02 (2006.01)
CPC F16K 27/0209 (2013.01) [F16K 15/063 (2013.01); F16K 2200/501 (2021.08)] 20 Claims
OG exemplary drawing
 
1. A dart valve comprising:
a valve housing comprising a valve inlet, a valve outlet, a housing wall and an aperture extending through the housing wall between the valve inlet and valve outlet; and
a valve cartridge comprising:
a cartridge housing configured to allow fluid to flow therethrough from a cartridge inlet to a cartridge outlet, wherein a wall of the cartridge housing consists of a unitary body extending from the cartridge inlet to the cartridge outlet; and
a valve plunger slidably mounted in the cartridge housing and configured to selectively allow fluid to flow from the cartridge inlet to the cartridge outlet,
wherein the valve cartridge is configured to be inserted through the aperture for removably mounting the valve cartridge within the valve housing, in a mounted position, such that the valve inlet is in communication with the cartridge inlet, the cartridge outlet is in communication with the valve outlet and fluid is able to flow from the valve inlet to the valve outlet through the valve cartridge.