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Boshart SV-1NL No-Lead 1/4" MPT Air Valve
The Boshart SV-1NL is a no-lead 1/4" MPT air valve used on hydro-pneumatic pressure tanks and bleeder systems in residential and commercial well and water system installations. This air valve is available with a light 3 PSI (or no-spring) configuration for bleeder systems that draw air into the water line to charge a pressure tank, or with a heavy 60 PSI spring for general-purpose use when adding air to a pressure tank with an air compressor. Manufactured in Taiwan and supplied in a package of 10 each, the SV-1NL gives plumbing contractors and well system installers a reliable, no-lead component for maintaining proper air charge in a pressure tank.
Key Features
- Trade Size: 1/4" MPT (male pipe thread) connection for direct threaded installation into a pressure tank or bleeder line.
- No-Lead Construction: Built to a no-lead standard, suitable for potable water system components.
- Bleeder System Application: The light 3 PSI or no-spring configuration allows air to be drawn into the water line to charge a hydro-pneumatic pressure tank automatically.
- General Purpose Application: The SV-1NL with a heavy 60 PSI spring is designed for adding air to a pressure tank manually using an air compressor.
- Threaded Connection: MPT threading allows the valve to be installed directly into tapped ports on pressure tanks and related well system components.
- Compact Air Valve Design: Sized for straightforward rough-in and retrofit installation on new or existing pressure tank systems.
Technical Specifications
- Trade Size: 1/4" MPT
- Country of Origin: Taiwan
- Packaging: 10 ea
Typical Applications
- Hydro-Pneumatic Pressure Tank Systems
- Well Water Bleeder Systems
- Air Charging with an Air Compressor
- Residential and Commercial Water System Rough-In
- Pressure Tank Retrofit and Repair
Why Boshart?
Boshart supplies no-lead, purpose-built components like the SV-1NL air valve for well and pressure tank systems, giving contractors and installers a dependable part sourced and packaged for professional plumbing supply use. With clear application options for both automatic bleeder systems and manual air-compressor charging, the SV-1NL helps ensure proper pressure tank operation in the field.
Manufacturer Resources
Product Specs
- list_batch:
- BOS-20260923
- Product Type:
- Air Valve
- Connection Type:
- MPT
- Department:
- Plumbing
- Product Subgroup:
- Fittings and Valves
- Product Material:
- No-Lead
- Product Size:
- 1/4"
- Product Group:
- Fitting
- Product Weight:
- 0.06 lb
- Product Length:
- 1.6 in
- Product Width:
- 0.55 in
- Product Height:
- 0.55 in
Boshart SV-1NL – Frequently Asked Questions
1) Will the Boshart SV-1NL air valve thread straight into a tapped port on my pressure tank?
Yes. The SV-1NL is a 1/4 inch MPT valve, so it threads directly into a 1/4 inch female tapped port on a hydro-pneumatic pressure tank or into a bleeder line fitting. No adapter is needed as long as the port is 1/4 inch FPT.
2) Should I use the light 3 PSI or the heavy 60 PSI spring version of the SV-1NL?
It depends on how the air gets into the tank. The light 3 PSI (or no-spring) configuration is for bleeder systems, where the valve lets air be drawn into the water line so the pressure tank charges itself automatically. The heavy 60 PSI spring version is the general-purpose choice when you are adding air to the tank manually with an air compressor. Pick the spring to match the method, not the tank size.
3) Does the SV-1NL air valve work on a bladder or diaphragm pressure tank?
This is an air valve for hydro-pneumatic pressure tanks and well bleeder systems, where air is drawn in or pumped in to maintain the air charge above the water. That is a galvanized-style air-over-water tank application. A pre-charged bladder or diaphragm tank uses its own Schrader-type air valve and does not need a bleeder air valve, so for those tanks this is not the part you want.
4) Is the Boshart SV-1NL air valve safe for potable water systems?
It is built to a no-lead standard, which is why it carries the NL suffix, and it is intended for potable residential and commercial well and water system work.
5) Can I use the SV-1NL on an existing pressure tank, or is it only for new installs?
Both. The valve is compact and threads in at a 1/4 inch MPT port, so it goes on new rough-in work or as a retrofit and repair part on an existing hydro-pneumatic tank. If the old valve came out of a 1/4 inch FPT tapping, this drops into the same hole.
6) How many air valves come in a pack of the Boshart SV-1NL?
The SV-1NL is supplied 10 each per package, which is how well and pump service trucks usually want it stocked since these are a common replacement item on tank service calls.
7) What is the Boshart SV-1NL part number and where is it made?
The manufacturer part number is SV-1NL and it is made in Taiwan. There is one size offered, 1/4 inch.
How fast can I get the Boshart SV-1NL delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the
continental
U.S.
Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit,
reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Boshart SV-1NL come with a warranty?
Absolutely. The Boshart SV-1NL is backed by a manufacturer’s warranty.
For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Boshart SV-1NL?
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