ERECTA SWITCH® by Compac Engineering
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10-703-BH dimensional diagram
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Components · Plastic Fittings

10-703-BH — 1/4″ BH / 1/2M / 1/8F Fitting

SKU: 10-703-BH-PP-1  ·  1-Pack · Polypropylene

The 10-703-BH is a three-way fitting offering three distinct mounting configurations in a single part: outside→in on 1/2 NPT, inside←out on 1/4 NPT, or through-bulkhead using the jam nut. 1.0″ hex, dual O-ring seals, and orientation arrow for correct installation direction. .54″ (13.72 mm) diameter bulkhead hole required. Available in Polypropylene, Acetal, and PVDF Kynar. Sold in 1-packs and 10-packs.

Material
Pack Size
Net Price — per 1-pack

Call 1-800-828-9044 for pricing.

OEM pricing for quantities above 999 quoted upon request.
Qty
Request OEM Quote Free Evaluation Sample
In stock · Ships Wednesday · Made in Paradise, CA · No minimum order
Other Plastic Fittings
10-700-CA Angle Connector 10-700-FB Fitting Bracket 10-700-WC Strain Relief 10-701-BH Bulkhead Fitting 10-702-BH Hex Bulkhead 10-703-BH 3-Way Fitting
Technical Documents
📄Series 10 Product Family Overview & RatingsPDF 📄Series 10 Application NotesPDF
Key Features

What Makes the 10-703-BH the Right Choice

Three mounting configurations
One fitting serves outside→in on 1/2 NPT, inside←out on 1/4 NPT, or through-bulkhead with jam nut. Reduces part number proliferation across OEM assemblies with varied installation geometries.
Dual O-ring seals and orientation arrow
Two O-ring seals provide redundant sealing across mounting configurations. Orientation arrow on body ensures correct installation direction, eliminating assembly errors.
1.0″ hex for tool access
Full hex profile for secure wrench engagement during installation. Compatible with standard 1″ open-end or box-end wrenches.
Three material options
Polypropylene for water and light chemical service. Acetal for hydrocarbon and solvent applications. PVDF Kynar for aggressive chemical service. Select to match fluid chemistry.
OEM Applications

Where the 10-703-BH Is Specified

Specifications

Technical Dimensions — 10-703-BH

Threads
1/4 NPT · 1/2 NPT · 1/8 NPT
Hex Size
1.0″ HEX (25.4 mm)
Body Length
.65″ (16.51 mm)
Total Length
1.87″ (47.5 mm)
Max Wall Thickness
.25″ (6.35 mm)
BH Hole Dia
.54″ (13.72 mm)
Seals
Dual O-ring seals
Orientation
Orientation arrow on body
Mount Options
Outside→in (1/2 NPT) · Inside←out (1/4 NPT) · Through-BH (jam nut)
Materials
PP · Acetal · PVDF Kynar
Certification
RoHS Compliant
Frequently Asked Questions

Common Questions About This Product

What liquid chemistries is the 10-703-BH compatible with?

Choose the material to match the media: Polypropylene (PP) for general aqueous, acids, and bases; Acetal (AC/Delrin) for solvents, fuels, and hydrocarbons; Kynar PVDF (KR) for aggressive or harsh chemicals. Every ERECTA SWITCH model is offered in all three materials.

What factors should I consider when choosing the 10-703-BH?

Consider media chemistry (pick PP, AC, or KR), liquid specific gravity, operating temperature and pressure, mounting style, number of switch points, and electrical contact rating. Compac will spec it from your application — request a free evaluation sample.

What makes ERECTA SWITCH different from other level switches?

It is the only fully modular, off-the-shelf liquid level switch system: switch, float, connector, fitting, and nipple are independently field-replaceable and stocked. OEMs configure exactly what they need with no minimums and short lead times. Made in Paradise, California; RoHS compliant.

Can I order individual ERECTA SWITCH replacement components?

Yes. The 10-703-BH is available as an individual, stocked part — no need to replace the entire switch assembly. ERECTA SWITCH is a fully modular system: switch, float, connector, fitting, spacer, and nipple are all orderable separately with no minimums. This reduces repair cost and downtime for OEM field service.

Are ERECTA SWITCH components interchangeable across models?

Yes — modularity is the core of the ERECTA SWITCH system. The 10-703-BH is designed to work across multiple Series 10 configurations. Floats, connectors, spacers, and fittings share standard interfaces, so one stocked component serves many switch assemblies. Check the model number to confirm compatibility.

How do I identify which ERECTA SWITCH component I need?

Each component has a unique model number (e.g., 10-703-BH) that identifies its type, material, and function within the assembly. Contact Compac with your switch model number and the part you need to replace — or request a free evaluation sample to confirm fit before ordering production quantities.