Find Verified Coconut Water Suppliers, Manufacturers and Wholesalers

Hard Sealed Gate Valve
Flanged Hard Seal Gate Valve for Water Supply & Municipal Pipeline
in demanding pipeline systems. Our valves feature a hard metal-to-metal seal, ensuring excellent durability, wear resistance, and long service life, even under high-pressure, high-temperature, or abrasive conditions.
We offer a full range of Flanged Metal Seated Gate Valves suitable for municipal water supply, building pipelines, fire protection systems, and industrial applications. Every valve is produced in our ISO9001-certified factory in Hebei, China, combining advanced manufacturing equipment, strict quality control, and professional engineering support.

Key Features

 Metal-to-Metal Hard Seal: Provides exceptional sealing performance, reduces leakage risk, and extends service life.


Flanged Ends: Easy and secure installation with standard flanges, ideal for municipal pipelines and water supply systems.


 High Durability: Resistant to corrosion, abrasion, and extreme working conditions.


Wide Application: Suitable for water supply, municipal pipelines, fire protection, heating and cooling systems, and industrial projects.

Customizable Solutions: OEM/ODM support available, including custom dimensions, pressure ratings, and material selections.

Applications

 Flanged Hard Seal Gate Valve for Water Supply


Flanged Hard Seal Gate Valve for Municipal Pipeline


Building water supply and drainage


 Fire protection water systems


Heating and cooling circuits


 Industrial water treatment and wastewater systems


Product Standard
Chinese standard; German F4/F5 standard; British standard 5163

Technical Specification
Size range: DN50-DN600
Pressure class: PN10/PN16/PN25
Temperature range: 0-80

Main Material
Valve body: Ductile iron (epoxy coated)
Valve stem: Stainless steel (SS304)
Seal: EPDM + Brass

Why Choose Zhengjia Valve
At� Zhengjia Valve, we integrate R&D, manufacturing, and sales to deliver reliable valves for global clients. Our products are exported worldwide, and we provide technical support and custom solutions for your projects. Trust Zhengjia Valve for durable, high-performance� ductile Iron gate valves� that keep your pipeline systems safe and efficient.

Non-Rising Stem Cap Resilient Seated Gate Valve Manufacturer | Underground Soft Seal Gate Valve
The Non-Rising Stem Cap Resilient Seated Gate Valve is specially designed for water supply and distribution systems, offering reliable shut-off performance in underground or space-limited installations.
Featuring a non-rising stem structure, the valve keeps a constant height during operation, making it ideal for buried pipelines. The wedge is fully encapsulated with resilient rubber (EPDM), ensuring bubble-tight sealing, corrosion resistance, and long service life.
As a professional Municipal Pipeline Gate Valves Manufacturer, we provide valves that combine stable quality, easy installation, and cost-effective performance for municipal and industrial projects.

Key Features & Advantages
Non-Rising Stem Design (NRS Type): Stem does not move vertically, perfect for underground systems and compact spaces
Resilient Soft Sealing Structure: Fully rubber-coated wedge ensures zero leakage and long-term sealing reliability
Corrosion-Resistant Construction: Epoxy-coated ductile iron body provides excellent protection against rust and harsh environments
Low Torque Operation: Smooth opening and closing reduce operational effort and improve efficiency
Full Bore Flow Design: Minimizes pressure loss and prevents clogging in water systems
Applications
This Resilient Seated Gate Valve is widely used in:

Municipal water supply networks


Underground pipeline systems


Irrigation and drainage projects


Fire protection systems
Wastewater treatment plants

Why Choose Our Resilient Seated Gate Valve
Choosing our valve means reducing your project risk and ensuring long-term reliability. We provide strict quality control with full pressure and sealing tests before delivery, ensuring every valve performs consistently in real applications. The use of durable ductile iron, stainless steel stem, and EPDM sealing helps minimize leakage and maintenance costs over time. With standardized flange compatibility and flexible customization options, our valves can be easily integrated into different systems. As a direct manufacturer, we offer competitive pricing, stable delivery, and fast technical support, making us a reliable long-term partner for your projects.

Rising Stem Resilient Seated Gate Valve Manufacturer | Flanged Soft Sealing Gate Valve

The Rising Stem Resilient Seated Gate Valve is designed for reliable shut-off in water supply, fire protection, and industrial pipeline systems. Featuring a fully rubber-encapsulated wedge, this valve ensures bubble-tight sealing, corrosion resistance, and long-term durability.
The wedge is fully encapsulated with resilient rubber, ensuring a tight seal, reliable performance, and long service life. Compared with traditional metal seated valves, this design provides zero leakage performance and low torque operation, making it an ideal solution for municipal and potable water systems.
As a professional Resilient Seated Gate Valve Manufacturer, Zhengjia Valve offers high-quality valves with international standards and global export experience.
Key Features & Advantages
Resilient Soft Sealing
The gate is fully encapsulated with elastic rubber, allowing slight deformation to achieve tight sealing and eliminate leakage
Rising Stem Design
Visible stem movement provides clear open/close indication, ideal for above-ground installations and fire systems
Full Bore Flow Passage
Smooth internal channel reduces pressure loss and prevents debris accumulation
Corrosion Resistance with Epoxy Coating
Fusion bonded epoxy coating protects both internal and external surfaces, extending service life
Low Torque & Easy Operation
Elastic sealing reduces friction, ensuring smooth operation even in large-size valves
Maintenance-Friendly Design
Multiple O-ring stem sealing system reduces leakage and allows long-term maintenance-free operation
� 
Applications
This Flanged Resilient Seated Gate Valve is widely used in:

Municipal water supply systems


Fire protection pipelines


Wastewater treatment plants


Irrigation and drainage systems


HVAC and cooling systems


Industrial fluid control pipelines

The resilient sealing structure ensures reliable shut-off even in demanding environments.

Flanged Hard-Seal Gate Valve
Metal Seated Gate Valve for High Pressure & Temperature | Flanged Gate Valve Supplier

The Flanged Hard Seal Gate Valve is a heavy-duty industrial valve designed for reliable shut-off in high-pressure and high-temperature pipeline systems. Featuring a metal-to-metal sealing structure, this valve ensures excellent durability, wear resistance, and long service life in demanding environments.

With a full bore design and flanged connection, it provides low flow resistance and stable sealing performance, making it ideal for water, oil, gas, steam, and industrial fluid control systems.
Standards & Certifications

Our  gate valves  are manufactured in compliance with international standards:
 Design Standard: API 600 / GB/T 12234


 Face to Face: GB/T 12221 / EN 558


 Flange Standard: ANSI B16.5 / DIN / BS


 Test & Inspection: API 598 / GB/T 13927

Product Features and Advantages
Pressure and wear resistant, adaptable to harsh working conditions : The metal-to-metal sealing structure is wear resistant, high temperature resistant, and high pressure resistant, making it suitable for oil, gas, steam, corrosive media, etc.
Long service life and reliable sealing : Even after long-term operation, the metal sealing surface wears slowly and can still maintain good sealing and pressure resistance.
�·�  � Wide range of pipe diameters and pressure ratings : capable of producing pipes from small diameters to large diameters, and multiple pressure ratings (PN/Class) to meet various industrial design requirements.
Compatible with a variety of materials and standards : carbon steel, stainless steel, alloy steel, ductile iron and other materials are available, and it supports DIN / ANSI / API / GB and other standards.

Size Specifications and Standards

Wide range of specifications are available, from small DN 50-100 to large DN 600+, all customizable.
Pressure ratings cover PN10 / PN16 / PN25 / higher (depending on material and structural design).
 Flange connections meet international standards such as ANSI, DIN, BS, and API , and are compatible with international projects.

Functions and Applications

Hard-seal gate valves are mainly used in: oil and gas pipelines, petrochemical plants, high-pressure steam systems, industrial chemical pipelines, high-temperature and high-pressure systems, power plant steam pipelines, heavy industrial conveying systems, and other scenarios. They are particularly suitable for systems requiring high pressure, high temperature, wear resistance, corrosion resistance, and long-term stable operation.

Flanged Soft-Seal Gate Valve
Flanged Soft Seal Gate Valve for Municipal Pipeline
The Flanged Soft-Seal Gate Valve is designed for reliable isolation in pipeline systems that require excellent sealing performance, low flow resistance, and stable operation. Its soft-seal structure typically uses elastic sealing materials such as EPDM or NBR, allowing the valve disc to fit tightly with the seat and achieve near-zero leakage after closing. In the open position, the full-bore flow path helps minimize pressure loss and supports efficient fluid transmission.

Product Features and Advantages

 Excellent sealing performance and zero leakage : The combination of valve disc and soft sealing seat can achieve elastic sealing, and there is almost zero leakage after closing.
 Full-bore design / Low flow resistance : When opened, there is no obstruction inside the valve, the flow path is directly connected to the pipeline, and the pressure loss is minimal.
 Anti-corrosion coating/corrosion resistance : An epoxy anti-corrosion coating can be sprayed on the inside and outside of the� gate valve� body to improve corrosion resistance and service life.
 Suitable for a variety of media : tap water, neutral liquids, low-pressure steam, etc., applicable to municipal water supply, building water supply and drainage, HVAC systems, industrial clean water systems, etc.
 Simple installation and maintenance : Traditional handwheel operation, mature and stable structure, suitable for general engineering projects.

Size Specifications and Standards
  Nominal diameter: DN50-DN600 (2" 24") is the standard range.
Pressure rating: PN16 (PN10/PN25 can be customized for some applications) .
Standards: Flanges and boreholes conform to BS EN 1092-2 , valve body structure and dimensions conform to BS 5163 / BS EN 558-1 , and pressure testing conforms to BS EN 12266-2003 .

Product color: black
Product power: 1500W
Voltage: 110-240V
Product size: 157X157X251MM

Product color White
Product size 1000 X 120 X550 MM
Product Weight 12.5KG
Product introduction: The product consists of a heating element and a shell. The heating element is heated by nickel-chromium alloy wire and the aluminum fins dissipate heat. The shell is made of high manganese carbon steel.

Our company has seven SSAW Pipe (also called spiral welded pipe) manufacturing lines. The annual output reaches 300000 Tons; the outside diameter is 219mm-3500mm, the thickness is 6mm-25.4mm, the steel grade is Q235B, Q345B, 20#, GRB, X42, X52, X60, X65, X70, X80, A106B, A53B. Our products have been widely used in many industries, such as Petroleum Projects, Coal Gas Projects, Natural Gas, Piling, Water Supply and Thermal Power Generation. Meantime, we have attained ISO9001:2000 International Quality Management System certification, API 5L ps1 -psl 2Certification, GB/T9711.1-1997 and SY/T5037-2000 ASTM A252, SY/T5040-2000 and so on.

20, working load 150kn to din 18216, breaking load>350kn
We, hebei longquan industry co., ltd. (formworkparts), are the manufacturer of formwork parts and scaffolding accessories from china. We mainly supply wing nuts, tie rod, water stop, hex. Nuts, bar couplers, rapid clamps, frame formwork clamps, jack base, u head jack, prop nuts, prop sleeves, and other scaffolding fittings.






In bags

Nominal diameter:20-800mm

Rate:0.6-1.6mpa

No package

The PE water supply pipe is extruded by the extruding product lines with special purpose polyethylene material. The pipes apply to cities and towns water supply pipeline net, irrigation and channel water project, garbage treatment site, sewage collecting pipeline project and agriculture spray irrigation project. Because the PE pipeline adopts the thermal fusion and electric fusion connection technologies, the interface has been integrated and the pipeline can resist the hoop stress and axial shock resistant stress produced by inside pressure. In addition, the PE pipe does not contain the heavy metalsalt stabilizer. The second pollution for drinking water is avoided for the pipe material no toxic, no pipe scale and not breeding bacteria.
Product Specificationú¦Nominal (outside diameter): 25-630mm series
Pressure Grades: SDR11

Machine parameter

Main parameters for down pipe forming machine:

1. Raw material spec: 0.4-0.6mm

2. Main motor power: 5.5kw

3. Reducer:BWD22-35-4KW

4. Forming speed: 0-10m/min

5. Number of forming steps:14 rows

6. Material of roller: high grade 45# steel(plated chrome on surface)

7. Type of cutting: roll forming and then m

old cutting

8 .achine Dimension: 6.5*1*1.2m

9.Chain: 1.2 Inches



Main parameters for down pipe curving machine:

1. Type of controlling: adopt strong electric controlling

2. Main motor power:3.0kw

3. Max curving angle: 900

4. Functions: curving and biting

5. Curving speed: 20-25m/min

6. Dimension: 1300*650*1500mm

Abstract of the Metal Roofing Rain Guttering

Profile Gutters Roll Forming Machine :
Metal Roofing Rain Guttering Profile

Gutters Roll Forming Machine can bend the roll

formed pipe, and let the drainpipe and the

bending connect to be the whole.The product

after roll forming has long working time than

the tranditional ppc pipe, and not aging. It

can make the project more integrate, and help

to enhance the image of the all project.
Metal Roofing Rain Guttering Profile

Gutters Roll Forming Machine is composed of

uncoiler, the feed leading table, the main

machine, the formation cutting device,

hydraulic system, control system and the

product bracket.

Usage Our downspout roll forming machine

mainly consists of uncoiler, roll forming

system, cutting equipment, protective guard,

hydraulic system, control system and out

table. It can make curve for down pipe to meet

the requirement of practical engineering

projects.
Machine components

Passive uncoiler

Guiding unit

Roll forming machine

Cutting unit

Hydraulic station

PLC control cabinet

Supporter table

Security cover

Elbow machine


Technical process



Passive uncoil FeedingRoll formingCut to

lengthOutput tableElbow with pipe


Technical parameters



ItemsSpecifications
Material SpecGalvanized steel sheet, color

sheet
Thickness of Coil Sheet0.3 0.8mm
Main Motor Power5.5kw
Forming Speed10-15m/min
Hydraulic Station Power3kw
Quantity of Stands18
Hydraulic Pressure10~12Mpa
Controlling SystemPanasonic PLC
Index Error of Length10m±2mm
Total Weight7T
Voltage380V 3 phase 50Hz


Features of this Metal Roofing Rain Guttering

Profile Gutters Roll Forming Machine
lower cost
high efficiency
reliable working
low energy consumption
Components of the Metal Roofing Rain Guttering

Profile Gutters Roll Forming Machine
steel strip supporting frame
Feeding platform
Automatic shearing system
Hydraulic system Steel strip unfolding system
Computer control system (imported computer)


High-precision automatic counter
Receiving table
Suitable process material: colored steel

sheet, aluminium steel sheet, and galvanized

steel shee

Optional components of the Metal Roofing Rain

Guttering Profile Gutters Roll Forming Machine
?Manual uncoiler frame in different tons
?Hydraulic automatic uncoiler
Working space and workman for the equipment:
1. Ground-level land
2.5T overhead travelling crane
3. Space for storing the material
4. Space for laying the machine
5. Road for vehicle moving
6. Workman: 2, operator and porter

Api 12 1/4 kingdream ga115l new steel tooth bit/milled tooth bit

I-product specification:
Bearing type: sealed journal
Sealed type: rubber sealed bearing/o-ring sealed bearing
Hydraulic design: 3 nozzles with snap rings
Pin connection: 6 5/8” api regular
Approx. Weight: 100 kgs
Condition: 100% new with original packing and documents
Moq: 1 piece, we have enough stock for normal sizes
Brand name: kingdream
Packing: wooden case for export
We have enough stock, we can ship to you by sea or air within 3 days

Hole Openers can be quoted with new/unused surplus or used Steel Tooth or TCI Cutters Hole Openers.

At some point it may be necessary to increase the size of a pre-drilled hole to a larger diameter or to drill large diameter holes. Hole opener bits are designed specifically for this purpose. Bits are custom manufactured in a wide range of styles to meet field requirements. A custom hole opener is an effective way of enlarging holes, hence the name "Hole Opener".
The Hole Opener Advantage
Straighter Holes - By drilling a smaller hole with a "pilot" bit, then attaching that said bit onto the bottom of the the hole opener. The hole opener will follow the path of the hole drilled by the smaller bit.
Larger Holes with Smaller Rigs - By drilling a hole in stages, larger holes can be drilled with smaller rigs. A smaller hole requires less power.
Replacing Cutters and Cutting Cost - On most Hole Opener designs, the cutters can be easily replaced. The cost to replace a cutter is a fraction of the cost to replace a large tricone rock bit.
Cost of Large Rock Bits - Larger diameter rock bits not only cost a lot, they can be difficult to find. A more economic solution is to use a hole opener that uses smaller tricone rock bit segments..
Flexability - Hole Openers can be fabricated in just about any size, and can be configured to drill through any formation.
Operational Considerations
Drilling Weight - The choice of drilling weight is determined based on the recommendations of the bit manufacturer and the number of cutters on the hole opener.
Number of Cutters - The number of cutters placed on a hole opener is governed by the following facts:
1.Maximum number which will fit around the perimeter.
2.The greater the number of cutters, the less the weight, which therefore reduces the penetration rate.
3.In softer formations, less weight is needed to penetrate.
4.The greater the number of cutters, the smoother the tool will run.
5.The greater the number of cutters, the greater the cost.
6.The greater the number of cutters, the longer the cutters will last
Rotary Speed - Maximum speed is determined by the manufacturer's recommendation and the calculation to account for the linear distance the cutter is moving per revolution.
Hole Cleaning - A frequently over looked point of hole opener operation is hole cleaning. The volume of cuttings to remove from a hole increase by a squared factor with an increase in hole diameter.