Patent ID: 8814064

Claim:
A nozzle for a hose or fixed pipework installation, the nozzle adapted for forming a wall of fluid adjacent to a flare in a hydrocarbon well test operation and comprising: a body defining a channel therethrough, the body further defining a central beam or projection which extends into the channel; a fluid deflector attached to the central beam or projection, the fluid deflector having a deflecting surface; wherein the fluid deflector is arranged at or near a downstream end of the channel such that the deflecting surface and the body together define a circumferentially continuous outlet, the downstream end of the channel comprises a chamfered surface oriented substantially parallel to the deflecting surface, and the deflecting surface extends beyond an outer width of the body; and a spacer ring disposed in a gap or space between the fluid deflector and a shoulder of the body to alter the position of the fluid deflector relative to the downstream end of the channel, thereby varying the width of the outlet.