1/4" 1/2" NPT High Temperature High Pressure Air Natural Gas Flow Needle Valve

• Customization: Available
• Power: Manual
• Connection Mode: Internal Thread
• Material: Stainless Steel, Carbon Steel
• Pressure: 1000 Psi to 10000 Psi
• Standard: Standard
• Media: Oil, Gas, Water, Acid Liquid
• Media Temperature: -60 Degree C to 600 Degree C
• Pakcing: PTFE, Copper Gasket, Graphite
• Warranty Period: 12 Months
• Certificate: ISO9001:2015, Mill Test Certificate
• Thread: NPT, BSPT, BSPP, Metric Thread
• Body Material: SS304 , SS316 , Carbon Steel A105
• MOQ: 20 Sets
• Handle: T Bar or Handwheel
• Orifice: 3mm to 11mm
• Port of Loading: Shanghai or Ningbo Port
• Delivery Time: 5-20 Days
• Transport Package: Carton, Plywood Case, Pallet
• Specification: 1/8"-2"
• Trademark: HY
• Origin: China
• HS Code: 8481804090
• Production Capacity: 10000 PCS/Month

Product Description

Needle valve is a precision flow control device designed to regulate the flow rate of fluids or gases with high accuracy. It features a slender, tapered needle-like plunger that fits into a matching seat, allowing for fine adjustments of the flow by gradually opening or closing the passage.  

Key Features:
1. Precise Flow Control - The tapered needle design enables fine-tuning of flow rates, making it ideal for applications requiring exact adjustments.  
2. High Pressure & Temperature Resistance - Often constructed from durable materials (stainless steel, brass, or carbon steel), needle valves can handle high-pressure and high-temperature environments.  
3. Leak Prevention - When fully closed, the tight seal between the needle and seat minimizes leakage.  
4. Manual or Automated Operation - Typically operated manually via a handwheel or knob, but can also be automated with actuators for remote control.  

Common Applications:
- Hydraulic & Pneumatic Systems - Used for pressure regulation and flow control.  
- Fuel & Gas Systems - Controls fuel flow in engines and industrial gas lines.  
- Laboratory & Instrumentation - Precisely adjusts fluid flow in analytical and medical equipment.  
- HVAC & Refrigeration - Manages refrigerant flow in cooling systems.  

Types of Needle Valves:
- Straight Pattern - In-line design for direct flow control.  
- Angle Pattern - Changes flow direction (90°), useful in tight spaces.  
- Multi-Port - Allows flow diversion between multiple outlets.  

Advantages:
Excellent for low-flow applications  
Reliable shut-off capability  
Durable in harsh conditions  

Needle valves are essential in industries where precise fluid or gas regulation is critical, ensuring efficiency and safety in complex systems.  

Features

Packing bolt and thread are extruded forming, high strength, enhance the usage life

Double lock pin for the handle,which makes the handle tighter, more durable

Locking pin protects the nut from being loose, which results in leak

The stem is with the treatment of cold rolling ,more durable and longer usage life

When the valve is full opened ,the back valve seat has the function of sealing

Performance Sheet

Material: stainless steel ,carbon steel and other specified material by customer

Working Pressure: max 6000 psig(413 bar)

Working Temperature:-65 degree F to 850 degree F(-53 degree C to 455 degree C)

Connection Style: ferrules, NPT thread , ISO/BSP thread , metric thread,weld

Size: 1/8" to 1-1/4", 3mm to 28mm

Packing: PTFE, RPTFE, PEEK, graphite and others

Wenzhou Huiyi Valve Co.,Ltd is located in Binhai Industrial Park,which is near Wenzhou airport,with convenient transportation.Our company mainly produce high,middle and low pressure valves and fittings,we have been in this field for many years,and we have our own research and development team,design team,now our company have 80 staffs,4 advanced engineers,10 technicians,and 10 pre-sale and after-sale service staffs,which could help cusotmers to solve a series of problems of installing and maintaining.

 

Our products include:needle valve,ball valve,globe valve, check valve, gate valve, pipe fittings,compression fittings, high pressure pipe fittings,butt weld pipe fittings,threaded pipe fittings,high pressure ball valve,pneumatic ball valve,hydraulic fittings,threaded valves,steel pipe,in addition,we also undertake to manufacture products as per customers' drawings.Our products are produced according to ASME/ANSI/DIN/JIS/GB standard strictly,make sure our products could be meeting customers' various requirements.The materials are stainless steel,carbon steel,alloy steel,duplex stainless steel and some other materials which customers specify.The pressure range is from 0-10000psi(0-689 bar),the nominal diameter is from DN3 to DN300.We have our own import and export right, and our products are sold to many countries,like Middle East,Europe,America,Africa and so on,and win a good reputation all over the world.

 

Our company have a wide production information and service networks,we have powerful executive team and sales team,our parters are from different fields in the world,we stick to the management aim of "Customer First,Service First,being realistic and innovative, manual benefits" ,reinforce the contact and cooperation with customers,through joining hands with the well-known manufacturers and service enterprises,expanddomestic and abroad market,we provide one package service from ordering to transportation,which is convenient for customers,and save much cost for customers.

 

Welcome wide new and old customers to inquiry ! Your satisfaction is our biggest pursuit.

Q 1: Are you a professional manufacturer or a trading company? A: As a high-tech enterprise, We integrates design, developing, manufacture and sales on stainless steel valve and pipe fittings. We have the whole procedures, starting form designing, machining, manufacturing, until inspecting, leaving factory. We think that as we are continuing improve ourselves, we can serve our consumers better.   Q 2: Do you have stock? When can i get it if i pay. A: For items if in stock, we can send out goods to you within 48 hours. For items not in stock, we need about 5-30 days to make it depend on your order quantity.   Q 3:How does your company make sure your products in excllent? A:We are professional in stainless steel valves and pipe fittings manufacturing for many years.Huiyi Valve company brings in the domestic and overseas advanced equipment and production technology,carries out process card and quality tracking management methods, ensures every step through strictly process, so that keep the products quality.   Q 4:If l don't know what kind of the product I need, what should I do? A: Just take it easy,you just need to provide us "working pressure","temperature" and "media."Then, we can suggest the most suitable product to you,or we provide you our e-catalogue for your reference,you choose the suitable model,you only need to tell us the model number.
Q 5: If l need, can l get a free sample from your company?  A: Of course you can, However, you maybe pay freight fee.if we have cooperated for over one time ,we can surpply free samples and free freight.   Q 6:What is your MOQ? Can I mix different styles to a start order? A: Please tell us what products you need first.Like compression fittings, the MOQ is 10pcs.But we can provide any stock as samples for you to check the quality first.   Q 7:Why your price on website not the same as real price? A: The price on the website is only for reference.  The size,material,quantity,surface treatment,working pressure,working temperature,exchange rate etc will affect the price.  The real price is floating, so prices are subject to our final confirmation.
Q 8:How about your after-sale service? A:If you are not satisfied with the goods received, please contact us within 7 days upon receiving! Let us find a satisfactory solution!   Q 9: What's the shipping method? A:  Normally use international express as DHL, TNT, FedEx, UPS, etc.  Can also arrange according to your needs.   Q 10: Can you give me a discount? A: Discount is available,but we have to see the real quantity,we have different price based on different quantity,how much discounts is determined by the quantity,moreover,our price is very competitive in the field. well, if the quantity is so big, we may give you a big discount.   Q 11:If l have a product wants to be made in other special material, can you do it? A:Of course, you just need to provide us designed drawings or sample and R&D department will estimate that whether we can do or not, we will give you the most satisfactory reply.   Q 12:Can l visit your factory? A:By all means, we warmly welcome your arrival, Before you take off from your country, please let us know. We will show you the way and arrange time to pick you up if possible.   Q 13: How can I trust you and your company? A: We are a gold and creditable company , we are focusing on the long term relationship with customers, we have worked with thousands of customers since  company built 10 years ago, customers always make highly complimentary remarks.