Professional Rainbow Non-Return Valve with 2lb Spring – 1.5″ – 2″

Product Overview

As a retailer of hot tub spa parts, I offer this specialized Rainbow non-return valve featuring a 2lb spring mechanism, designed for precise backflow prevention in both 1.5″ and 2″ systems. This dual-size valve provides enhanced control with specific spring resistance.

Key Features

• 2lb spring mechanism
• Dual-size compatibility
• Calibrated resistance
• Professional sealing system
• Chemical-resistant materials
• UV-stabilized construction
• Precision spring tension
• Multi-position mounting

Applications

Engineered for:

• Specific pressure systems
• Regulated flow control
• Equipment protection
• Mixed-size installations
• Precision backflow prevention
• Critical control points
• Calibrated systems

Technical Advantages

The 2lb spring provides precise cracking pressure for specific applications, while the dual-size design (1.5″ – 2″) offers installation flexibility. The calibrated spring ensures consistent operation under defined conditions.

Technical Specifications

Specification	Value
Size Range	1.5″ – 2″
Spring Rating	2lb
Body Material	Premium PVC
Spring Material	316 Stainless Steel
Seal Material	EPDM
Temperature Range	0°C to 60°C
Maximum Working Pressure	10 bar
Cracking Pressure	2lb (0.14 bar)
Connection Type	Universal fit

Installation Benefits

• Size versatility
• Calibrated operation
• Low maintenance design
• Universal compatibility
• Simple integration

Design Features

• Precision spring mechanism
• Adaptable connections
• Flow indicators
• Reinforced body
• Optimized flow path

Performance Characteristics

• Specific cracking pressure
• Controlled operation
• Silent function
• Reliable sealing
• Extended durability

Installation Guidelines

• Size verification
• Professional mounting
• Basic support required
• Access consideration
• Position flexibility

Maintenance Features

• Simple mechanism
• Easy inspection
• Basic cleaning
• Robust construction
• Minimal maintenance

Technical Benefits

• Precise control
• Size flexibility
• Specific resistance
• System protection
• Consistent performance

Operation Parameters

• Spring tension verification
• Regular testing
• Clean system essential
• Flow direction critical
• Support requirements

Best Practices

• Professional installation
• Regular maintenance
• System cleanliness
• Proper support
• Flow verification

Additional Features

• Calibrated spring tension
• Universal sizing
• Clear indicators
• Durable components
• Professional seals

Performance Monitoring

• Spring pressure checks
• Flow verification
• Seal inspection
• Operation testing
• Support verification