Skip to content
18148 (18-148) Midland Compression - Female Adapter - 1/4" Tube OD x 1/2" Female NPTF - Brass

18148 by Midland | Compression | 1/4" Tube OD x 1/2" Female NPTF | Adapter | Brass

$10.03 - $10.03
$10.03
$10.24
$10.24 - $10.24
$10.24

Midland Industries
Brass Fitting - Compression Fitting - Female Adapter - Compression x Female NPTF - Brass

This product will take 2-3 Weeks minimum to ship.

Inventory @ Manufacturers Warehouse: 897 Units
Can I get a discount on my purchase?

Our listed prices are our lowest possible price with current costing but when volumes/value are high enough sometimes we can pass on a discount from the manufacturer.

Some products have predefined quantity discounts that will apply automatically, those pages have a table near the price describing the discount teirs.

If you feel your purchase quantity of a particular product is very large and want us to investigate with the manufacturer please feel free to Contact Us.

What if my item is out of stock?

All customers get an email regarding the shipping time frame of their purchase, usually within the business day. If your item is in stock we will ship within 1 business day, otherwise, the email will contain a lead time. If you do not receive this email, we recommend checking your email's spam folder. If you have any questions at that point please do not hesitate to Contact Us or chat below!

Can I get free shipping?

Shipping will calculate as free instantly if your order value exceeds $5000.

Some exceptions apply.

Free Freight is only available for the Contiguous USA.

Specifications for Variant SKU: 18148 Midland
Shape (Orientation): Straight
Ends Configuration: 1/4in Tube Compression, 1/2in Female NPTF
Material(s): Brass
Applicable Specs & Approvals: Applicable ASA Standards, Applicable ASME Standards, Applicable SAE Standards

SPECIFICATIONS

Applications: Use with copper, aluminum and thermoplastic tubing. Not recommended for steel tubing. Manufactured for low and medium pressure tubing connection work where excessive vibration or tube movement is not involved. Not recommended for application using gaseous media. Used With: Aluminum, copper, brass and plastic tubing. Plastic tubing requires insert. Not recommended for steel tubing.
SAE Rating: SAE# 060103 Conformance: Meets specifications and standards of ASA, ASME and SAE.
Vibration: Fair resistance - use long nut when greater vibration resistance is needed. Temperature Range: -65°F to +250°F (-53°C to +121°C) range at maximum operating pressures. (Refer to tubing temperature range.)
Lead Free: These are NOT Lead Free Tolerance: +/- .02 on all dimensions.
Assembly Instructions:
  • 1) Cut tubing to desired length.
  • 2) Slide nut and then sleeve on tube. Threaded end "A" of nut must face toward fitting.
  • 3) Insert tubing into fitting body. Be sure tubing is bottomed on fitting shoulder.
  • 4) Lubricate threads and assemble nut to fitting body.
  • 5) Tighten nut hand tight. From that point, tighten with a wrench the number of turns indicated below.
    • Tube Size: 1/8" thru 1/4" | Additional Turns from Hand Tight: 1-1/4"
    • Tube Size: 5/16" | Additional Turns from Hand Tight: 1-3/4"
    • Tube Size: 3/8" thru 1" | Additional Turns from Hand Tight: 2-1/4"
Tube OD 1/8" 3/16" 1/4" 5/16" 3/8" 7/16" 1/2" 5/8" 3/4" 7/8"
Thread Size - B 5/16-24 3/8-24 7/16-24 1/2-24 9/16-24 5/8-24 11/16-20 13/16-18 1-18 1-1/8-18
Working Pressure 400 PSI 400 PSI 300 PSI 300 PSI 200 PSI 200 PSI 200 PSI 150 PSI 100 PSI 75 PSI

Working Pressures at 73°F.

Crossover Series:
66
Part Number Compression x Female NPTF A Hex Approx. Weight
(Lbs.)
18142
(18-142)		 1/8" x 1/8" 0.75" 0.56" 0.02
18143
(18-143)		 3/16" x 1/8" 0.78" 0.56" 0.04
18144
(18-144)		 3/16" x 1/4" 0.96" 0.68" 0.04
18145L
(18-145L)		 1/4" x 1/8" 0.84" 0.50" 0.05
18145
(18-145)		 1/4" x 1/8" 0.78" 0.56" 0.05
18146L
(18-146L)		 1/4" x 1/4" 0.88" 0.62" 0.09
18146
(18-146)		 1/4" x 1/4" 1.03" 0.68" 0.09
18148
(18-148)		 1/4" x 1/2" 1.02" 0.87" 0.12
18149
(18-149)		 5/16" x 1/8" 0.81" 0.56" 0.05
18150
(18-150)		 5/16" x 1/4" 0.91" 0.62" 0.06
18152
(18-152)		 3/8" x 1/8" 0.88" 0.56" 0.06
18153L
(18-153L)		 3/8" x 1/4" 0.97" 0.62" 0.08
18153
(18-153)		 3/8" x 1/4" 1.06" 0.68" 0.08
18154L
(18-154L)		 3/8" x 3/8" 1.03" 0.75" 0.08
18154
(18-154)		 3/8" x 3/8" 1.06" 0.81" 0.10
18155
(18-155)		 3/8" x 1/2" 1.12" 1.00" 0.08
18156
(18-156)		 3/8" x 3/4" 1.19" 1.16" 0.14
18157
(18-157)		 1/2" x 1/4" 1.09" 0.68" 0.10
18158L
(18-158L)		 1/2" x 3/8" 0.94" 0.81" 0.12
18158
(18-158)		 1/2" x 3/8" 1.12" 0.81" 0.12
18159L
(18-159L)		 1/2" x 1/2" 1.19" 1.00" 0.12
18159
(18-159)		 1/2" x 1/2" 1.31" 1.00" 0.12
18162L
(18-162L)		 5/8" x 1/2" 1.20" 0.94" 0.18
18162
(18-162)		 5/8" x 1/2" 1.38" 1.00" 0.18
18163
(18-163)		 5/8" x 3/4" 1.20" 1.12" 0.22
18164
(18-164)		 3/4" x 1/2" 1.25" 1.06" 0.26
18165
(18-165)		 3/4" x 3/4" 1.28" 1.19" 0.28
18166
(18-166)		 7/8" x 3/4" 1.31" 1.12" 0.34

"L" at the end of a Part# means Light Pattern: These fittings are completely interchangeable with full pattern fittings, but have been modified in some way. This modification is usually in the length of the pipe threads. Used in plumbing and light industrial applications.

Dimension data can change without notice.

Midland Industries

Midland Industries

Midland Industries is a family of brands recognizable industry wide. Midland is a supplier of brass fittings, valves, and accessories for hose, pipe and tube in brass, bronze, stainless steel, steel, malleable iron, and plastics.

Shop Parts by Midland Industries