Manifolds

Manifolds

Posted on by Ethan Wood
Category:News, Product Spotlight

Working Pressure up to:

Stainless steel: 2D, 2R, 3D, 3R, 5D, 5R up to 6000 psig (414 bar)

2DH, 2RH, 3DH, 3RH, 5DH, 5RH up to 10000 psig (690 bar)

Alloy C-276: 2D, 2R, 3D, 3R, 5D, 5R up to 6000 psig (414 bar)

Working Temperature:

PTFE Packing: -65℉ to 450℉ (-54℃to 232℃)

Graphite Packing: -65℉ to 1200℉ (-54℃ to 649℃)

Orifice: 0.157 (4.0 mm)

Two-piece stem design: Upper stem threads cold rolled and hardened lower stem for high strength and smooth operation. Upper stem thread lubricant isolated from system media. Linear instead of rotary motion of the rising, non-rotating stem minimises packing abrasion and reduces the friction between the seat and the tip. Safety back seating seals in fully open position. Steady and durable fastening of the handle by double lock-pins.

Each 2D/2R/3D/3R/5D/5R Series manifolds leak tested with Nitrogen or compressed air at the maximum working pressure, each2DH/2RH/3DH/3RH/5DH/5RH Series manifold leak tested with water at 1.1 times the maximum working pressure.

Based on graphite packing

Design Standards

Instrumentation manifolds are designed and manufactured in accordance with ASME B31.3 and MSS-SP-105. Flanges in compliance with MSS SP-99 or IEC 61518 are available.

2-valve manifold is used with pressure gauges or pressure transmitters.

3-valve and 5-valve manifolds are used with differential pressure transmitters.

Types and Dimensions

2-Valve Manifolds

Consist of one block valve and one bleed valve

Every manifold is supplied with one PTFE sealing ring for manifold-to-instrument and four 7/16″ UNF x 1.75″ high tensile bolts. Dimensions shown are for 2D Series manifolds.

3-Valve Manifolds

Consist of two block valves and one equaliser valve

Every manifold is supplied with two PTFE sealing rings manifold-to-instrument and four 7/16″ UNF x 1.75″ high tensile bolts. FL8 connections are obtained by adding an extra CM tube fitting to the FNS8 connections. Dimensions are shown for 3D Series manifolds.

5-Valve Manifold of Double-Bleed Function

Consist of two block valves, two bleed valves and one equaliser valve

Every manifold is supplied with two PTFE sealing rings for manifold-to-instrument and four 7/16″ UNF x 1.75″ high tensile bolts. FL8 connections are obtained by adding an extra CM tube fitting to the FNS8 connections. Dimensions shown are for 5D Series manifolds.

For any inquires or dimensions for 2DH/3DH/5DH Series manifolds please contact our sales team: sales@nvfcl.com or call 01942601209

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