200402-MFS

200402-MFS is a 200402 series block & bleed, hard seat needle valve. It combines isolating and venting in a single valve, eliminating the need for tubing and fittings. The block valve isolates the downstream process fluids and the bleed valve exhausts upstream fluids enabling static pressure transmitters, switches or gauges to be removed without disturbing the permanent piping installation. Block valve is located on the left side and the bleed valve is located on top in a 90° orientation, venting is to the right.

• 1/2" NPT-flange (standard) connection, 1/4" NPT vent
• Flange-female, stainless steel valve
• 100% helium leak tested to 1 x 10-4 ml/s for performance and reliability
• Blow-out proof stem provides a secondary stem seal in the full open position
• FKM O-ring seal and PTFE back-up ring below the stem threads to protect from corrosion and galling
• Stem and bonnet threads are rolled for strength and ease of operation
• One-piece bonnet with a metal-to-metal seal to the valve body below the bonnet threads
• Slotted spring pin to prevent accidental loosening
• Colour coded vinyl dust cap for bonnet and stem
• Pressure rating of 10,000psi at 200°F, orifice size is 0.187"