Downing Wellhead Equipment, Inc., products are designed such that a broad degree of interchangeability with recognized OEM profiles built in.  Current product features are.....        

Pressure ratings:  2,000 - 20,000 psi
Temperature Ratings:  -50 - +350
Material Classes:  AA-HH
Product specification levels (PSL): 1, 2 & 3
Performance rating levels (PRL):   1 & 2
Elastomeric & metal-to-metal sealing systems

Special sizes and trims available for most
pressures and environments upon request