Series-NF602

Supported Applications

The Weiss Series NF602 consists of stainless steel cased, non-filled industrial pressure gauges designed for severe applications involving vibration, corrosion, and pulsating conditions. The product overview identifies suitability for agricultural equipment, hydraulic systems, oil field equipment, pumps, compressors, and car wash systems.

Operating Conditions & Performance

The Series NF602 is a 6" gauge with a Type 304 stainless steel case featuring a blow-out disc and polished stainless steel bayonet ring. The measurement range covers Vacuum, Compound, and Pressure to 15,000 psi. Accuracy for this series is specified as 1/2% of span.

Wetted materials include Type 316 Stainless Steel for the tube and socket (with threaded restrictor). The window material is Tempered Glass. A warning notes that misuse may cause explosion and personal injury; users are advised to read ANSI B40.1 before installation or use. Additionally, glycerine can combine with strong oxidizing agents including chlorine, nitric acid, and hydrogen peroxide resulting in an explosion.

Key Specifications

• Case Size: 6" Type 304 stainless steel case with blow-out disc
• Dial Material: White aluminum with black and red markings
• Window: Tempered Glass
• Tube & Socket: Type 316 Stainless Steel (socket includes threaded restrictor)
• Movement: Stainless steel rotary type with bushings
• Pointer: Black anodized aluminum, micro adjustable
• Connection: 1/4" NPT bottom
• Ranges: Vacuum, Compound, Pressure to 15,000 psi
• Accuracy: 1/2% of span

Panelling Mounting Options

The series supports Back Flange mounting configurations. The specific model for this option is Series NF602BF.

Configuration Options

While the primary focus of this bundle is the non-filled 6" gauge, the broader product line includes liquid-filled and non-filled gauges in various case sizes (2 1/2", 4", 6") with different mounting options. The Series NF602 specifically offers:

• Case Construction: Type 304 stainless steel
• Ring Style: Polished stainless steel bayonet ring
• Safety Feature: Blow-out disc integrated into the case back
• Dial Markings: White aluminum with black and red markings (psi & kPa available on other series sizes)
• Mounting Configurations: Direct mounting, wall or panel mounting via Back Flange option (Series NF602BF)

Liquid Filled vs. Non-Filled Series Context

The catalog distinguishes between liquid-filled series (LF) and non-filled industrial stainless steel cases (NF). The LF series utilizes Glycerine as the standard filling medium (+20°F to +150°F), while Silicone is available by special order (-40°F/150°F). The Series NF602 belongs to the non-filled family, which does not include liquid fill.

Material and Component Variations Across Sizes

Different case sizes within the broader catalog utilize varying tube materials. For example:

• Series LF602 (Liquid Filled 6"): Type 316 stainless steel tube, Tempered Glass window.
• Series NF402 (Non-Filled 4"): Type 316 Stainless Steel tube, Safety glass window.
• Series LF251/LF252 (Liquid Filled 2.5"): Phosphor Bronze or Type 316 stainless steel tubes depending on pressure range and series variant.

Key Product Differences

The Series NF602 is distinguished from other sizes in the non-filled family by its case size, accuracy class, and specific safety features:

• Series NF252 (2 1/2"): Features a bayonet lock ring, ABS dial with psi & kPa markings, clear acrylic window, Type 316 stainless steel tube/socket. Accuracy is ±1.6% of span; ranges to 6000 psi.
• Series NF402 (4"): Features a bayonet ring, white aluminum dial with psi & kPa markings, safety glass window, Type 316 stainless steel tube/socket. Accuracy is 1% of span; ranges to 5,000 psi.
• Series NF602 (6"): Features a bayonet ring and blow-out disc, white aluminum dial with black/red markings, tempered glass window, Type 316 stainless steel tube/socket. Accuracy is 1/2% of span; ranges to 15,000 psi.

Liquid-filled equivalents (Series LF) differ by the inclusion of liquid fill and specific case/ring constructions such as crimped rings for smaller sizes or bayonet rings with different window materials. The Series NF602 is specifically configured without liquid fill, utilizing a blow-out disc for safety in high-pressure applications.