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1/2 Inch High Capacity Water Pressure Regulator for Watts 1156F Series, Replace for S1156F Boil Water Pressure Regulator 1/2'

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$60.99

$ 25 .99 $25.99

In Stock

About this item

  • 【Well-designed Replacement】It is a part of the 1156F Series, Feed Water Pressure Regulator, designed to replace for S1156F, 1/2 in Nominal
  • 【Item Specification】Inlet/Outlet Connection Size: 1/2 IN; Inlet Connection Type: Union Joint; Pressure Setting: 10-25 PSI (0.7-1.7 BAR); Maximum Working Pressure: 100 PSI (6.9 BAR); Maximum Operating Temperature: 100℃ (212℉); Minimum Temperature: 0.5℃ (33℉); Outlet Connection Type: Female Threaded; Outlet Thread Type: NPT
  • 【Regulator Function】The S1156F Feed water Pressure Regulator is designed to fill the boiler and system piping with water in commercial and residential hydronic heating systems, and to maintain water pressure in the system at all times. It can also provide reserve water to the system if a leak occurs
  • 【Great Features】Made of stainless steel, bronze, plastic and rubber; with tight seating check valve, purge lever for manual purging, and a stainless steel strainer. It also features high capacity performance and simplified servicing design
  • 【Installation Instruction】This Feed Water Pressure Regulator can be installed vertically or horizontally but must be installed on the cold water supply line leading to the boiler. Before installing the regulator, flush the water supply line to remove debris, scale and dirt, leaving enough space to operate the quick fill and purge lever
  • 【100% Satisfaction Guarantee】We are committed to providing excellent products and best service for our customers. If you are not satisfied with the product, you can simply return it. We support a 30-day refund for return and a 12-month warranty



Product Description

S1156F
S1156F Installation

1/2 Inch High Capacity Water Pressure Regulator

This Feed Water Pressure Regulator can be installed vertically or horizontally but must be installed on the cold water supply line leading to the boiler. Before installing the regulator, flush the water supply line to remove debris, scale and dirt, leaving enough space to operate the quick fill and purge lever

Detailed Installation Steps for S1156F Boil Water Pressure Regulator

STEP 01 This Feed Water Pressure Regulator must be installed on the cold water supply line to the boiler. It may be installed in either vertical or horizontal position. Allow sufficient clearance to operate the fast fill and purge lever
STEP 02 Install a shutoff valve upstream of the regulator. (Notice: Local codes typically require the use of a backflow preventer in the system Model 9D. Consult local authorities for the type, installation and testing requirements. The backflow preventer must be installed upstream of the regulator)
STEP 03 Prior to installing the regulator, flush out the supply pipe to clear it of chips, scale, dirt, etc
STEP 04 Install the Watts regulator in the supply line to the boiler with the arrow on the valve body pointing in the direction of flow to the boiler

For S1156F Boil Water Pressure Regulator 1/2"

S1156F 1

Well-designed Replacement

  • It is a part of the 1156F Series, Feed Water Pressure Regulator
  • Designed to replace for 1156F, B1156F, S1156F, SB1156F
  • 1/2 in Nominal
S1156F 2

Item Specification

  • Inlet/Outlet Connection Size: 1/2 IN; Inlet Connection Type: Union Joint
  • Maximum Working Pressure: 100 PSI (6.9 BAR)
  • Maximum Operating Temperature: 100℃ (212℉); Minimum Temperature: 0.5℃ (33℉)
  • Outlet Connection Type: Female Threaded; Outlet Thread Type: NPT
S1156F 3

Great Features

  • Made of stainless steel, bronze, plastic and rubber
  • With tight seating check valve, purge lever for manual purging, and a stainless steel strainer
  • It also features high capacity performance and simplified servicing design
S1156F 4

Regulator Function

  • Designed to fill the boiler and system piping with water in commercial and residential hydronic heating systems
  • To maintain water pressure in the system at all times
  • It can also provide reserve water to the system if a leak occurs
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.

Dick Short
Reviewed in the United States on March 9, 2025
This regulator is factory set at 15 PSI for use on a hot water boiler system Do not install it on on the main water entry to your home because it will take over 2 hours to fill a bath tub and your wife may make you sleep in the car
Dave C
Reviewed in the United States on January 3, 2025
Fit very well and works perfectly. Would purchase again.