Siemens Energy ¾" Gate Valve – A105N Carbon Steel, Class 300, Flanged RF

The Siemens Energy (via Dresser-Rand) DRZRNS2049H7T16 is a robust ¾" manual gate valve designed for high-pressure fluid isolation in demanding process systems. Built with a forged ASTM A105N carbon steel body and a bolted bonnet, this valve is rated for ANSI Class 300 service and includes flanged raised face (RF) connections per ASME B16.5. It offers a pressure rating of 740 psi at 100°F (5.1 MPa at 38°C), in compliance with ASME B16.34 for carbon steel valves. Featuring a handwheel-operated rising stem and graphite-based packing, it ensures dependable sealing under elevated temperature and pressure conditions. Designed to meet API 600/API 602 standards and tested to API 598, this valve is suitable for steam, oil, and gas process environments. Supplied in a batch of 3 units, each valve is tagged with a stainless-steel nameplate for traceability.

Specifications:

– Manufacturer: Siemens Energy (via Dresser-Rand)
– Part Number: DRZRNS2049H7T16
– SO/Job No.: 30065222391 (K-46410)
– Line No.: Accessories
– Quantity Supplied: 3 Units
– SR No. (Serial Reference): 316
– Valve Type: Manual Gate Valve
– Operation: Handwheel operated (manual)
– Design: Rising stem, bolted bonnet
– Nominal Bore (Size): ¾ inch (DN20 / 0.75 inch)
– End Connections: Flanged Raised Face (RF)
– Face-to-Face Dimension: Conforms to ANSI B16.10 for Class 300, ¾" valves

Pressure & Temperature Ratings
– Pressure Class: ANSI Class 300
– Max Pressure: 740 psi (5.1 MPa) @ 100°F (38°C)
– Temperature Range: -29°C to +425°C (depending on packing/seat material)
– Body: ASTM A105N (Normalized Carbon Steel Forged)
– Bonnet: Bolted – same material as body (A105N)
– Disc/Wedge: Assumed A105 or A216-WCB with hard-faced seating surfaces
– Stem: Assumed 410 Stainless Steel or equivalent
– Seat: Metallic (integral or welded-on seat)
– Packing: Graphite-based for high pressure and temperature resistance
– Tag Plate: Stainless steel with heat number and partial model data
– Design Standards:
 – API 600 / API 602 (Gate valve construction)
 – ASME B16.34 (Pressure/temperature compliance)
 – ASME B16.10 (Face-to-face dimensions)
 – ASME B16.5 (Flanged RF ends)
– Testing Standard: API 598 (Hydrostatic and seat leakage)
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