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  • Z61H Forged Steel Self-Sealing Socket Weld Gate Valve

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Z61H Forged Steel Self-Sealing Socket Weld Gate Valve

Z61H Forged Steel Self-Sealing Socket Weld Gate Valve

  • Model:Z61H-150LB/Z61H-300LB/Z61H-600LB/Z61H-900LB/Z61H-1500LB/Z61H-2500LB
  • Specification:3/8"- 2"
  • Temperature:-29℃ ~ 425℃
  • Medium:Water, oil, steam, etc.
  • Pressure:150LB-2500LB
  • Connection method:Socket Weld
  • Driving method:Manual
  • Material:Forged steel, forged stainless steel
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Z61H Forged Steel Self-Sealing Socket Weld Gate ValveOverview

Overview

The Z61H forged steel self-sealing socket weld gate valve is an outside screw and yoke (OS&Y) wedge gate valve manufactured with a forged steel body and welded end connections. The valve body is formed through a forging process, resulting in a dense internal structure and excellent mechanical properties. The valve uses a handwheel to drive the stem up and down, which in turn moves the wedge gate to open or close the pipeline. The sealing surfaces are overlaid with hard alloy ("Y" type), forming a high-performance metal-to-metal hard seal. Pre-machined welding bevels are provided on both ends, allowing for direct butt welding to the pipeline, creating a permanent, zero-leakage connection. This valve is specifically designed for high temperature, high pressure, and severe service conditions, making it an ideal choice for industries such as power generation and petrochemicals. It is primarily welded into critical high-temperature and high-pressure piping sections with extreme requirements for connection reliability, sealing integrity, and pressure containment, such as main steam systems of power plant boilers, high-pressure feedwater pipelines, hydrogenation units in petrochemical plants, synthetic ammonia process lines, and auxiliary systems in nuclear power plants, serving as a permanent, high-safety shut-off device.

Z61H Forged Steel Self-Sealing Socket Weld Gate Valve Product Image

Z61H Forged Steel Self-Sealing Socket Weld Gate ValveCharacteristic

Features

1、Forged Steel Body, Excellent Strength: The valve body is forged from high-quality forged steel (such as A105, F22, F304, F316), resulting in a dense structure, free from casting defects, with high mechanical strength and excellent impact resistance. It is suitable for high-pressure and fatigue-prone operating conditions.

2、Welded Connection, Absolute Seal: Equipped with standard welding bevels on both ends for direct butt welding to the pipeline. This eliminates the risk of leakage associated with flange gaskets, provides high connection strength, and enables the valve to withstand high temperatures, high pressures, and thermal cycling stresses.

3、Hard Alloy Sealing ("Y" Type): The sealing surfaces of the disc and seat are overlaid with high-hardness alloys like Stellite. These surfaces exhibit high hardness, wear resistance, high-temperature resistance, and erosion resistance, ensuring excellent sealing performance and a long service life.

4、Outside Screw and Yoke (OS&Y) Structure, Intuitive Position Indication: The stem rises and falls with the gate. The valve opening position can be directly determined by observing the extension height of the stem, facilitating operation and maintenance.

5、Full Bore Design, Low Flow Resistance: The full bore flow path ensures minimal resistance to media flow and low pressure loss, making it suitable for systems with strict requirements for pressure drop.

6、Suitable for Extreme Operating Conditions: The overall structure and material selection make it suitable for high working pressures and temperatures, providing stable and reliable performance.

Z61H Forged Steel Self-Sealing Socket Weld Gate Valvestructure principle

Z61H Forged Steel Self-Sealing Socket Weld Gate Valve Structure Diagram

Part Name and Material

No.Part NameC6 to ASTM (CS no ASTM, A105)A5 to ASTM (A5 no ASTM, F22)S50 to ASTM (SS no ASTM, F546(1)/F546(3))
1Valve BodyA105A132/322, A132/922A132/340(1), A132/650(2), A132/316(3), A132/616(3)
2BonnetA276/420, A276-420A276/304, A276-304A276/306(1), A276/626(2), A276/316(3), A276/616(3)
3Valve SeatA132/430(8)/10, A132/430(8)/10A132/304, A132/930(4)A132/306(1), A132/650(4), A132/316(1), A132/616(1)
4Valve StemA132/6, A132/26A132/304, A132/930(4)A132/340(1), A132/650(4), A132/316(1), A132/616(1)
5Gasket316 / 316 flat flange / threaded flange316 / RPTFE, 316 / TT993
6Valve CapA105A276/304, A276-304A276/340(1), A276/650(4), A276/316(1), A276/616(1), A276/616(2)
7BoltA193 B7, A193-B7A193 B10, A193-B10A191 B8, A191-B8, A193 B9, A191-B8M
8NutA276/420, A276-420A276/304, A276-304
9Blowdown PipeA276/10, A276-410A132/340(1), A132/650(4), A132/316(1), A132/616(1)
10CoreA193 B7, A193-B7A193 B10, A193-B10A191 B8, A191-B8, A193 B9, A191-B8M
11Blowdown Pipe CoreA105A132/11, A132/11A132/340(1), A132/650(4), A132/316(1), A132/616(1)
12NutA194/21, A194-201A194-6, A194-6A194-8, A194-8M, A194-DM
13Stem NutA276/420, A276-420
14Lock NutA194/21, A194-201A194-6, A194-6A194-8, A194-8M, A194-DM
15PinSS 1050/3438/4438/4748/5748
16GasketA137A137
17GasketA473/431, A473-431
18Seal RingFlexible GraphitePTFE, TT003


Z61H Forged Steel Self-Sealing Socket Weld Gate Valvetechnology parameter

Performance Specification Table

性能规范表Performance Specification Table
公称压力Nominal Pressure (PN)150LB-2500LBMPa
强度试验压力Strength Test Pressure1.5times
密封试验压力Seal Test Pressure1.1times
适用温度Suitable Temperature Range-29 ~ 425


Z61H Forged Steel Self-Sealing Socket Weld Gate Valvestandard size

Z61H Forged Steel Self-Sealing Socket Weld Gate Valve Outline Drawing

Z61H Forged Steel Self-Sealing Socket Weld Gate Valve Dimensional Table

ItemType3/8"1/2"3/4"1"1-1/4"1-1/2"2"(Unit)
NPSReduced Bore3/8"1/2"3/4"1"1-1/4"1-1/2"2"inch
NPSFull Bore3/8"1/2"3/4"1"1-1/4"1-1/2"2"inch
L-92111111120120140178210mm
H (Open)-169197197236246283330354mm
W-100125125160160180200240mm
WeightBolted Bonnet2.54.34.26.68.812.517.223.5kg
WeightWelded Bonnet2.44.24.06.38.712.117.222.0kg