NPT Galvanized Male Female Threaded Union 331 Pipe Fittings
2.Dual-threaded, detachable pipe connection .
3.Industrial water/gas pipeline fitting .
4.Hot-dipped galvanized, precision-threaded .
5.High-strength, anti-rust malleable iron .
6.NPT/BSPT compatible, easy disassembly .
7.Corrosion-resistant 331 threaded union .
8.Industrial-grade, male-female pipe joiner
Description
NPT Galvanized Male Female Threaded Union 331 Pipe Fittings
When you need a reliable, detachable connection for your piping system, NPT Galvanized Male Female Threaded Union 331 Pipe Fittings deliver the idealize arrangement. These specialized coupling gadgets are made from high-quality pliable press and outlined to interface two channels without requiring revolution of your whole channeling framework amid establishment or expulsion. The flat-seat plan with Male/Female arrangement dispenses with the require for extra areolas, sparing you space and lessening potential spill focuses in your system.
Key Features
- Three-piece development with male-threaded tail, female-threaded head, and union nut
- Hot-dip galvanized coating for prevalent erosion resistance
- Flat-seat plan guaranteeing dependable gasket sealing
- NPT threading acclimating to ANSI/ASME B1.20.1 standards
- Space-saving M/F setup that acts as both connector and adapter
- Quick support get to in restricted spaces
- High-strength pliable press development for durability
Technical Specifications
| Specification | Details |
|---|---|
| Material | Black Heart Malleable Iron (ASTM A197) |
| Threading Standard | NPT (National Pipe Taper) - ANSI/ASME B1.20.1 |
| Surface Treatment | Hot-dip galvanized (ASTM A153) |
| Coating Thickness | ≥70 microns |
| Pressure Rating | Class 150 (300 psi WOG / 150 psi Saturated Steam) |
| Seat Type | Flat Seat (Model 331) |
| Temperature Range | -20°F to 400°F (-29°C to 204°C) |
Dimensions and Specifications Table
| Size (NPT) | Length (mm) | Union Nut Diameter (mm) | Weight (kg) |
|---|---|---|---|
| 1/2" | 42 | 28 | 0.15 |
| 3/4" | 48 | 32 | 0.22 |
| 1" | 55 | 38 | 0.35 |
| 1-1/4" | 62 | 45 | 0.52 |
| 1-1/2" | 68 | 52 | 0.68 |
| 2" | 75 | 65 | 1.02 |
Materials and Surface Treatment
Our moldable press development gives great pliable quality and ductility. The hot-dip galvanization prepare makes a defensive zinc coating that offers cathodic assurance against rust and erosion. This treatment makes your fittings perfect for open air and muggy situations where standard press fittings would rapidly deteriorate.
Standards and Certifications
- ASTM A197 (Malleable Iron Castings)
- ANSI/ASME B1.20.1 (Pipe Threading)
- ASTM A153 (Galvanizing Standards)
- ISO 9001 Quality Management System
Application Areas
NPT Galvanized Male Female Threaded Union 331 Pipe Fittings exceed expectations in requesting mechanical environments:
- Industrial HVAC & Evaporator Frameworks: Idealize for interfacing feedwater pumps and heaters
- Commercial Water system: Empowers fast valve and channel support without cutting primary lines
- Water Treatment Offices: Gives dependable associations in destructive environments
- Process Channeling: Perfect for compressed discuss and non-corrosive liquid systems
- Manufacturing Plants: Encourages visit hardware change-outs
Installation Instructions
- Clean all string surfaces thoroughly
- Apply fitting string sealant or tape to male threads
- Hand-tighten the male conclusion into the female port
- Place gasket on the level situate surface
- Position the female conclusion and secure with union nut
- Tighten with fitting torques - maintain a strategic distance from over-tightening
Quality Control
We actualize thorough testing conventions to guarantee reliability:
- Thread Gauging: NPT Go/No-Go gauge verification
- Galvanization Tests: Preece Test for coating uniformity
- Pressure Testing: Hydrostatic testing at rated pressures
- Dimensional Accuracy: Precision measurement verification
- Material Analysis: Spectroscopic confirmation of composition
Packaging and Shipping
Your fittings arrive safely bundled in defensive cartons with anti-rust treatment. We offer adaptable shipping choices to meet your extend timelines. Bulk orders get uncommon bundling to anticipate harm amid transport.
OEM and Customization Services
With over 26 a long time of casting ability and an yearly generation capacity of 30,000 tons, we give comprehensive customization administrations. Our designing group can adjust measurements, weight evaluations, or surface medications to meet your particular requirements.
When you select our fittings, you're selecting demonstrated unwavering quality sponsored by decades of fabricating excellence.
Frequently Asked Questions
Q: What gasket material should I use with these unions?
A: Use EPDM for water applications, Nitrile for oil/air systems, and PTFE for high-temperature steam applications.
Q: Can these fittings handle potable water systems?
A: Yes, when certified lead-free per applicable standards in your region.
Q: How do I prevent galvanic corrosion?
A: These fittings are designed for steel/iron pipe connections. Use dielectric unions when connecting to copper systems.
Contact Us
Ready to enhance your piping system with reliable union fittings? Our technical team is here to help you select the perfect solution for your application.
Email: zhiyuan@mifittings.com
Contact us today for technical specifications, custom quotes, or engineering support. We're committed to delivering quality NPT Galvanized Male Female Threaded Union 331 Pipe Fittings that exceed your expectations.
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