Gate
Valves
| Product Code | Product description | Size | Small box | Large Box |
|---|---|---|---|---|
| 4447015 | 15MM GATE VALVE PRESS | 15MM | 8 | 64 |
| 4447022 | 22MM GATE VALVE PRESS | 22MM | 6 | 36 |
| 4447028 | 28MM GATE VALVE PRESS | 28MM | 4 | 24 |
Press Fit Gate Valve
The Lawton Tubes Press Fit Gate Valve is designed to provide reliable isolation and flow control within press-fit pipework systems. Manufactured from high-quality brass, it provides a durable shut-off solution for potable water, heating and cooling applications.
The press-fit connection enables a fast and secure installation without soldering, welding or hot works, reducing installation time and improving safety on site. Designed for dependable isolation, the valve provides minimal flow restriction when fully open and features Lawton’s black visual press indicator for easy installation verification.
WRAS and KIWA Regulation 4 approved, the valve is backed by a 5-year warranty for reliable long-term performance.
Key Features
- Reliable isolation and flow control for press-fit pipework systems
- Fast, heat-free press installation
- No soldering, welding or hot works required
- Durable brass construction
- Full flow design with minimal pressure loss
- Lawton black visual press indicator for installation verification
- WRAS and KIWA Regulation 4 approved
- Suitable for potable water, heating and cooling systems
- Available in 15mm, 22mm and 28mm sizes
- Backed by a 5-year warranty
Technical Data
Product Overview
Lawton 316L Stainless Steel Press Fittings provide a reliable, heat-free jointing solution for potable water, heating and cooling systems. Manufactured from AISI 316L stainless steel, the range is available in sizes from 15mm to 168.3mm and features an M-profile press connection for fast installation without soldering or hot works.
Applications
- Potable water systems
- Heating systems
- Cooling systems
- Chilled water systems
- Oil-free compressed air systems
- Vacuum systems
- Rainwater harvesting systems
Market Sectors
- Domestic
- Commercial
- Industrial
Product Specifications
|
Property |
Specification |
|
Material |
1.4404 (AISI 316L) Stainless Steel |
|
Size Range |
15mm – 168.3mm |
|
Seal Material |
Black EPDM O-Ring |
|
Press Profile |
M-Profile |
|
Maximum Operating Pressure (Liquid) |
16 bar (-20°C to +110°C) |
|
Minimum Operating Pressure |
-0.8 bar (gauge) |
|
Maximum Operating Pressure (Oil-Free Compressed Air) |
10 bar (5°C to 35°C) |
|
Product Marking |
Size, LTC Logo, Material Grade, MFG Date, DVGW |
|
Electrical Continuity |
Yes |
|
Warranty |
50 Years* |
Subject to standard Terms & Conditions. Please refer to our website for full details.
Key Features
- Leak Before Press technology (up to and including 54mm)
- Blue press indicator
- No soldering required
- No hot works permits required
- Suitable for potable water applications
- WRAS-approved sealing materials
- Electrical continuity throughout the system
- Fast, flame-free installation
Standards & Compliance
|
Category |
Standard |
|
Fitting Material |
EN 10088 |
|
O-Ring Material |
EN 681-1 |
|
Thread Specification (Male) |
ISO 7 / EN 10226-1 |
|
Thread Specification (Female) |
BS EN ISO 228 |
|
Tube Compatibility Standards |
EN 10312, EN 10217-7 |
|
Certification |
DVGW Certified |
Operating Performance
|
Property |
Value |
|
Maximum Liquid Pressure |
16 bar |
|
Maximum Oil-Free Compressed Air Pressure |
10 bar |
|
Minimum Pressure |
-0.8 bar (vacuum) |
|
Operating Temperature Range |
-20°C to +110°C |
|
Electrical Continuity |
Yes |
Tube Compatibility
Compatible with stainless steel tubes manufactured to EN 10312 and EN 10217-7. Fittings accept both Series 1 and Series 2 tube dimensions.
|
Tube OD (mm) |
EN 10312 Series 1 Wall Thickness (mm) |
EN 10312 Series 2 Wall Thickness (mm) |
|
15 |
0.6 ✓ |
1.0 ✓ |
|
18 |
0.7 ✓ |
1.0 ✓ |
|
22 |
0.7 ✓ |
1.2 ✓ |
|
28 |
0.8 ✓ |
1.2 ✓ |
|
35 |
1.0 ✓ |
1.5 ✓ |
|
42 |
1.1 ✓ |
1.5 ✓ |
|
54 |
1.2 ✓ |
1.5 ✓ |
|
66.7 |
1.2 ✓ |
— |
|
76.1 |
1.5 ✓ |
2.0 ✓ |
|
88.9 |
— |
2.0 ✓ |
|
108 |
1.5 ✓ |
2.0 ✓ |
|
139.7 |
2.0 ✓ |
2.6 ✓ |
|
168.3 |
2.0 ✓ |
2.6 ✓ |
Recommended Minimum Fitting Clearance
To allow for tube deformation during pressing, the following minimum distances should be maintained between adjacent fittings.
|
Tube Size |
Minimum Clearance F (mm) |
|
15mm |
13 |
|
18mm |
13 |
|
22mm |
13 |
|
28mm |
13 |
|
35mm |
13 |
|
42mm |
16 |
|
54mm |
20 |
|
66.7mm |
30 |
|
76.1mm |
40 |
|
88.9mm |
45 |
|
108mm |
50 |
|
139.7mm |
60 |
|
168.3mm |
70 |
Approved Press Tools
Lawton 316L Press Fittings are approved for use with M-profile press tools from:
- Novopress
- Geberit
- Rothenberger
- REMS
Important: Matching press tools, adaptors, jaws and slings from the same manufacturer must always be used during installation.
Water Quality Guidance
316L stainless steel offers excellent corrosion resistance for potable water systems.
- Chloride ion content in potable water should not exceed 250 mg/l.
- 316L stainless steel can tolerate chloride concentrations up to 1000 mg/l, but prolonged exposure at elevated temperatures may increase the risk of pitting or crevice corrosion.
- Where chlorine-based disinfection is used, application duration and concentration should be carefully controlled.
- Water treatment products must be compatible with stainless steel systems.
Material Compatibility
Dissimilar Metals
Installations containing mixed metals should generally be avoided, as galvanic corrosion can occur when metals with significantly different electrochemical properties are connected directly together.
Where mixed-metal systems are unavoidable:
- Follow the Water Regulations Guide.
- Apply recognised good engineering practice.
- Use appropriate isolation measures where required.
Grade Compatibility
- 304 and 316L stainless steel fittings and tube may be used within the same installation.
- Overall corrosion resistance will be determined by the least corrosion-resistant component within the system.
- For potable water applications, 316L is the preferred material due to its enhanced resistance to chloride-induced corrosion.
