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Small brass pressure regulator with threaded ports and adjustment knob

Watts

Watts 1/8 LF560 Pressure Regulator 0-125 psi Trap

SKU CH-PV32-QFWZZ MPN 1/8

Brass pressure regulator adjusts output from 0 to 125 psi with a 300 psi maximum inlet rating and 140 °F temperature limit

  • Product typeDrain Components
  • Precise pressure control with 0-125 psi adjustment range
  • Brass body withstands up to 300 psi maximum pressure
  • Buna-N seals rated for 140°F operating temperature
  • Series 560 design built for industrial applications
  • 1/8 inch FNPT connections fit standard piping

Industrial Pressure Regulator 0-125 psi

The Watts 1/8 LF560 is a brass-bodied pressure regulator designed for industrial fluid-control systems. It accepts 1/8 in FNPT connections and adjusts outlet pressure between 0 and 125 psi. The unit suits technicians and plant engineers who need reliable pressure reduction on small-bore piping.

Installation notes and common issues

The regulator threads directly into 1/8 in FNPT ports, making it straightforward to fit with standard pipe tools. A 1/8 in gauge port is provided for pressure verification. Leaks typically arise from insufficient thread sealant or debris on the Buna-N seals, so clean threads and proper sealant application are essential.

Capacity and operating limits

The brass body handles a maximum inlet pressure of 300 psi and continuous temperatures up to 140 Degrees F. Within the 0 to 125 psi adjustment range it delivers stable control for compressed air, water or compatible fluids. Applications exceeding the temperature ceiling or requiring wider pressure spans will need a different regulator.

How it compares

Measured against everything we stock in Drain Stoppers, Strainers & Traps, at today’s prices. Recalculated every night.

Price $87.99
Pricier than about 74% of the 4,240 comparable items (median $31.99).

Specifications

Product
Brand nameWatts
Model name1/8 LF560 0-125
Product typeDrain Components

Questions about this item

How do I verify the LF560 regulator is holding the correct pressure after installation?

Attach a gauge to the 1/8 in gauge port and confirm the reading stays within the 0 to 125 psi adjustment range while the system runs up to 140 Degrees F.

What components come with the LF560 and what must I supply?

The box contains the brass regulator body with 1/8 in FNPT inlet and outlet; you must provide piping, thread sealant, and a pressure gauge for the 1/8 in gauge port.

Which LF560 version should I choose for a 1/8 in line needing up to 125 psi?

Select the Series 560 model with 1/8 in FNPT connections, 0 to 125 psi adjustment range, Buna-N seals, and 300 psi maximum pressure rating.

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