Series N35B Compact, Versatile Water Pressure Regulator ½" to 1" N.P.T. threaded female inlet x outlet connections

Series N35B

Series N35B is suitable for supply water pressures up to 400 psi and may be adjusted from 25 to 75 psi (172-517 kPa) delivery pressure to the system. The standard setting is 50 psi (345 kPa). Standardly furnished with a bypass feature, bronze body, stainless steel seat and strainer. All parts are easily and quickly serviceable without removing the valve from the line. The bypass permits the flow of water around the valve back into the main when pressures, due to thermal expansion on the outlet side of the valve, exceed the pressure in the main. Water saving test program concluded that reducing the supply pressure from 80 lbs. to 50 lbs. resulted in water savings of 30%. FEATURES Single union inlet connection Double union connections (inlet and outlet) - Option DU Integral stainless steel strainer, removable when bottom plug is removed Renewable stainless steel seat Bronze body construction Serviceable in line Bypass feature for thermal expansion pressure MODELS N35B - NPT female threaded inlet and outlet connections. N35BU - NPT female union inlet x NPT female threaded outlet connections. N35BU-S - solder union inlet x NPT female threaded outlet connections. N35BDU - NPT female threaded union inlet and female threaded union outlet. N35BDU-S - solder union inlet and solder outlet connections.

OPTIONS LP - for low pressure range 10-35 psi (69-241 kPa), set for 30 psi (207kPa) unless otherwise specified. Max. pressure 100 psi (689 kPa). Max. temperature 180°F (82°C). DU - for threaded female union inlet and outlet connections. DU-S - for solder union inlet and outlet connections. G - for gauge tapping. GG - for gauge tapping and 160 psi (11 bars) gauge. SC - for sealed spring cage. U - for NPT threaded female union inlet x NPT threaded female outlet. U-S - for solder union inlet x NPT female outlet connections. Z3 - for sealed spring cage and corrosion resistant spring cage screws for water works pit installations. Z6 - for water meter threaded connections, male, for meter box installations. Z8 - for water meter threaded connections, female solder, for meter box installations. Z9 - for 1" meter threaded union inlet x 3 Ú4" NPT threaded outlet with 90° adjustable elbows.

SPECIFICATIONS

When main water pressure exceeds 60 psi (413 kPa), an approved water pressure reducing valve shall be installed to maintain the reduced outlet pressure at 50 psi (345 kPa) or less. The pressure reducing valve shall feature an integral strainer screen serviceable by removing a single bottom plug. The valve shall also feature a bypass for thermal expansion. The bypass, replaceable seat and EPDM seat disc shall be contained in a module to allow in-line servicing. The valve shall be a Watts Regulator model N35BDU.

MATERIALS Bronze body construction Renewable stainless steel seat Stainless steel integral strainer screen Reinforced EPDM diaphragm EPDM valve disc PRESSURE-TEMPERATURE Standard Model - inlets to 400 psi (27.6 bars) outlet range 25-75 psi (172-517 kPa) preset at 50 psi (345 kPa) static. Note: It is recommended that the system does not exceed a 10 to 1 inlet to outlet ratio. Low Pressure Model - inlets to 200 psi outlet range 10-35 psi (69-241 bars) preset at 30 psi (207 kPa) static.. Alternate pressure settings available upon request. With high inlet pressures and low outlet settings a two step reduction will provide optimal performance. Maximum Temperature: 180°F (82°C)

Capacity STANDARDS Meets requirements of ASSE Standard 1003 (ANSI A112.26.2) listed by IAPMO.

DIMENSIONS - WEIGHT

Model	Size(DN)		Dimensions								Weight
			A		B		C *		D
	in.	mm	in.	mm	in.	mm	in.	mm	in.	mm	lbs.	kg.
N35B	½	15	3 ½	89	5 15/16	151	3 7/16	87	1 7/16	37	2.50	1.1
	¾	20	3 ½	89	5 15/16	151	3 7/16	87	1 7/16	37	2.50	1.1
	1	25	4 ¼	108	6 7/8	175	4 3/8	111	1 5/8	41	3.00	1.4
N35BU	½	15	4 ³/16	106	5 15/16	151	3 7/16	87	1 7/16	37	2.75	1.2
	¾	20	4 ³/16	106	5 15/16	151	3 7/16	87	1 7/16	37	2.75	1.2
	1	25	5 5/16	135	6 7/8	175	4 3/8	111	1 5/8	41	3.25	1.5
N35BUS	½	15	4 ¹/8	105	5 15/16	151	3 7/16	87	1 7/16	37	2.75	1.2
	¾	20	4 5/16	109	5 15/16	151	3 7/16	87