Gate Valve,Ball Valve,Globe Valve,Check Valve

Gate Valve,Ball Valve,Globe Valve,Check Valve https://www.valve-gmk.com/ [email protected] GMK VALVE was located in longwan town,wenzhou city of Zhejiang,where is the China Pump & Valve hometown.

The main products of our company include ball valves, gate valves, globe valves, check valves, butterfly valves, plug valves,strainer valves, power station valves,and gas valves ect. Size from 1/2" to 88" (DN15 to DN2200);Pressure from 150Lb to 2500Lb (PN1.0Mpa to PN42.0Mpa); materials cover WCB, WCC, WC6, WC9, CF8, CF3, CF8m, CF3M, LCB, LCC, A105, 304, 316, 304L, 316L, F11, F22, LF2, F51,B148, AL

LOY 20 etc. The products are widely applied in petroleum, chemical industry, natural gas, electric power, metallurgy, pharmacy, pulp & paper, urban construction and long transportation pipeline projects. Our products are sold well worldwide include America, Europe, Southeast Asia, Middle East and Africa ect. Certificated with ISO9001, API6D, CE/ PED. We has established the technical research, development center and quality inspection center with a relatively sound management system. In addition, it has introduced advanced manufacturing technology from aboard, and has advanced machining centers, CNC machine tools, metal cutting and processing equipment, physical and chemical testing equipment, nondestructive tester, spectrum analyzer, valve comprehensive performance tester and other equipment to ensure the products reach the purpose of zero leakage. We insist on the concept of " Quality first,Prestige important", a well-trained and dedicated team including engineers,technicians and other employees, This allows us to offer customers quality product,competitive price and prompt delivery time. We always work hard to improve our existing products and pursue new ideas and ways to stay ahead of the every changing market.With our professonal and experience hope can enlarge your market and obtain a new brilliance in the future .

This 8", Class 150 sleeve-type plug valve features a corrosion-resistant UB6 alloy body and plug, engineered for demandi...
25/11/2025

This 8", Class 150 sleeve-type plug valve features a corrosion-resistant UB6 alloy body and plug, engineered for demanding chemical-processing conditions. The design emphasizes corrosion resistance, particle tolerance, and low-torque sealing performance.

1. Construction & Materials
Body & Plug

Manufactured from UB6 high-alloy austenitic stainless steel, providing exceptional resistance to acidic, chloride-rich, and aggressive chemical media.

Excellent pitting, crevice, and intergranular corrosion resistance.

Precision-machined plug surface enhances sealing performance and reduces sleeve wear.

Sleeve

PTFE or reinforced PTFE (depending on specification), offering:

Broad chemical resistance

Extremely low friction coefficient

Elastic memory for tight sealing

Typical operating range from −29°C up to approx. 200°C

Gearbox Operator

Provides higher output torque and smooth, controlled operation.

Suitable for large valves or media containing solids or viscous components.

Available with corrosion-resistant housings for harsh outdoor environments.

2. Key Design & Performance Features
Sealing System

360° fully encapsulating sleeve design minimizes potential leakage paths.

Sealing surfaces are isolated from direct media impingement, increasing service life.

Particle Handling

Sleeve-type construction prevents solids from entering sealing gaps, reducing jamming risk.

The non-metallic sleeve surface tolerates minor particulates.

Flow Channel Optimization

Straight-through port design minimizes pressure drop, ideal for stable flow requirements.

Leakage performance can reach Class VI or equivalent, depending on the supply spec.

Pressure & Temperature Envelope

Pressure rating per Class 150 standards.

Temperature capability primarily governed by the PTFE sleeve, typically up to 200°C.

High-temperature options available via modified sleeve materials.

3. Suitable Media & Applications
Suitable Media

High-temperature acidic fluids

Fluids with suspended solids, crystals, or corrosive particulates

Corrosive gases or process off-gases

Medium-viscosity chemical fluids

Typical Applications

Acid washing or corrosive cleaning systems

Transfer of crystal-bearing mother liquors

Acidic waste streams with solids

Corrosive solvent recycling systems

Chemical pipelines requiring low torque and high sealing reliability


Big Size Gate Valve - Technical Specification‌‌1. General Design‌‌Type‌: Rising Stem OS&Y (Outside Screw & Yoke) Gate Va...
05/11/2025

Big Size Gate Valve - Technical Specification‌
‌1. General Design‌

‌Type‌: Rising Stem OS&Y (Outside Screw & Yoke) Gate Valve
‌Size‌: [DN 800 / NPS 32] (or specify size range)
‌Pressure Class‌: Class 150 / PN 16 (or higher per project)
‌Temperature Range‌: -29°C to 425°C (Standard)
‌Design Standards‌: API 600 / ASME B16.34 / EN 1092-1
‌2. Body & Trim Materials‌

‌Body Material‌: WCB (ASTM A216 Grade WCB)
‌Surface Treatment‌: Epoxy Coating for corrosion protection
‌Disc Material‌: WCB + Stellite 6 Hardfacing (ASTM R575)
‌Hardfacing Thickness‌: 3.0mm (min) on sealing surfaces
‌Seat Ring Material‌: Stellite 6 (ASTM R575)
‌Stem Material‌: A182 F6a stainless Steel (ASTM A182)
‌3. End Connections‌

‌Type‌: Raised Face (RF) Fl**ge
‌Fl**ge Standard‌: ASME B16.5/ASME B16.47 / EN 1092-1
‌Bolt Pattern‌: [Specify bolt size & quantity, e.g., M20 x 8]
‌4. Operator & Actuation‌

‌Operator Type‌: Manual Gear Operator
‌Gearbox Material‌: Cast Iron (GG25) or CS
‌Gear Ratio‌: 40:1 (or specify)
‌Position Indicator‌: to show the open or close position
‌Optional‌: Locking Device (for safety)
‌5. Sealing & Performance‌

‌Leakage Rate‌: Class VI (ANSI/FCI 70-2)
‌Torque Requirement‌: [Specify max torque, e.g., 1200 Nm]
‌Bonnet Design‌: Bolted Bonnet (ASTM A216 Grade WCB)
‌6. Testing & Certification‌

‌Hydrostatic Test‌: 1.5 x Design Pressure (per API 598)
‌Shell Test‌: 1.1 x Design Pressure
‌Certification‌: PED 2014/68/EU (CE Marking) or API 6D
‌7. Optional Features‌

‌Actuator‌: Electric/Pneumatic/Hydraulic Actuator (if required)
‌Limit Switch‌: Open/Close Position Feedback
‌Insulation Jacket‌: For High-Temperature Applications
‌Key Enhancements
📧: [email protected]
whtas app :+8613857734602
https://www.valve-gmk.com/
&gas

Address

Linpu North Road, Heyi Village, Oubei Town, Yongjia CountyWenzhou City, ChinaP. R.
Yongjia

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