Double Block & Bleed ManifoldsAS-Schneider Double Block & Bleed Manifolds and W-Shaped 3 Valve Manifolds are designed for mounting to pressure instruments (pressure transmitters, pressure gauges and pressure switches). The innovative design of the valve head units gives long service life and a smooth, low-torque operation. The AS-Schneider Double Block & Bleed Manifolds, as standard, are rated to 420 bar (6,092 psi), but can also be rated at 689 bar (10,000 psi). AS-Schneider also provides the manifolds for sour gas service (acc. to NACE MR0175/MR0103 and ISO 15156), degreased and lubricated for oxygen service as well as manifolds for fugitive emission applications.