SUMMARY. IN - series. IO - series. WI - series. WM - series. CO - series. IW - series. FI - series. TO - series. FO - series.

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1 Insert Check Valves Watts Industries produces an extensive assortment of plastic check valves. These check valves can be found in water meters, shower and bath taps and safety units, but they are also used in boilers, hot water boilers, pumps and (underfloor) heating systems. The check valves are also used in industrial systems. This in-house production of check valves allows us to respond adequately to market developments, with new products and improvements on existing products.

2 SUMMARY 2 CS - series Page 3 IN - series Pages 8 and 9 WI - series Page 3 IO - series Pages 1 and 11 CO - series Pages 4 and 5 WM - series Pages 12 and 13 FI - series Pages 6 and 7 IW - series Page 14 FO - series Pages 6 and 7 TO - series Page 14 FW - series Pages 6 and 7 Auxiliary Mounting Tools Page 15

3 CS15 DN1 The Watts check valve type CS15 is the latest generation of check valves. Not only do these check valves operate ideally, they also offer added advantages: - identical contours in open and closed position (stem of valve doesn't protrude); - variable outlet system, facing side or rear side. The innovative use of materials in these valves renders them more resistant to both chemicals and high temperatures. The CS is also more compact than conventional check valves, and therefore easier to fit! 3 Approvals: Kiwa (NL), DVGW (D), NF - ACS (F), ETA (DK), SITAC (S), Belgaqua (B). Other diameters on request. O ring ø 15 min ± ±.5 min 14.5 WI2 DN2 The Watts check valve type WI2 shows the inventive solutions of Watts Industries. Our R&D made this check valve for our customers with the same performances they are used to. Other diameters and closing pressures are also optional. Approvals: Kiwa (NL), DVGW (D), Belgaqua (B), SITAC (S), GDV (DK), NSF (US). O ring 4.1 ± ± ± ± ±.5 Other diameters on request. ø 24.2 ±.2 ø 27-3 ø 36 ±.1 ø 45 ±.1 ø 39 H7 ø 37 ±.2 min ø 31.8 ø 43.5 ±.1 ø 35.7 ±.1 ø 39 m9 ø ±.1 ø ø ø ø 11.1 ø ø CS15 1 W ±.5 WI2 2 W Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal CS15 DN1 Diameter nominal WI2 DN CS15 - DN1 Material specifications House Valve Torpedo Diaphragm O-ring Spring Stainless steel WI2 - DN

4 4 CO1 DN8 CO14 DN1 CO series The Watts check valves type CO with unique sealing principle offers outstanding performances. These check valves are used in plumbing fittings, sanitary taps and in threaded non-return valves where building codes and international standards are required. Other diameters on request. CO13 DN1 CO15 DN1 CO2 DN15 Approvals: Kiwa (NL), Belgaqua (B), DVGW (D), NF - ACS (F), WRAS (UK), ETA - GDV (DK), SITAC (S), NSF (US). Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal CO1: DN8 CO14: DN1 CO13: DN1 CO15: DN1 CO2: DN15 CO1 8 W CO14 1 W CO13 1 W CO15 1 W CO2 15 W Material specifications House Valve Torpedo Diaphragm O-ring Spring Stainless steel CO1 DN8 CO14 DN1 O ring Ø C Ø D Ø E Ø G 15 B Ø F H J K All dimensions are given in mm. DN model ØA B ØC ØD ØE ØF ØG H J K 8 CO ± ± ± CO ± ±

5 CO13 DN1 CO15 DN1 CO2 DN15 O ring 5 Ø C Ø D Ø E Ø G 15 B Ø F H J K All dimensions are given in mm. DN model ØA B ØC ØD ØE ØF ØG H J K 1 CO ± ± CO ± ± CO ± ± CO1 - DN8 CO14 - DN1 CO13 - DN1 CO15 - DN CO2 - DN Classical guiding of valve stem Guiding of valve stem (WATTS) Some vibrations can occur at low flow rates (water flush at night). These vibrations are generated by possible lateral movements of the valve. Until now it was not possible to avoid this defect without affecting the hydraulic characteristics. Thanks to the unique guide system by slotted stem that eliminates the possibility of movement and optimal hydraulic profile, vibrations are eliminated. By providing this guidance without the possibility of movement avoids calcareous deposits and vibration, ensuring a flawless and quiet operation for years.

6 6 FI1 DN8 FI - FO - FW series The Watts check valve type FI, FO and FW is a perfect slide-in cartridge with added advantages. The best performance in those inlet sides where tightening has to be simple. It is marked by its unique construction and its universal applications. FI15 DN15 Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal FI1: DN8 FI15: DN15 FO15: DN15 FO2: DN2 FW1: DN1 FO15 DN15 Material specifications House Valve Torpedo Diaphragm O-ring Spring Stainless steel Approval: GDV (DK) FO2 DN2 FI1 8 W FI15 15 W FO15 15 W FO2 2 W FW1 1 W14916 Approval: GDV (DK) FW1 DN1 Approvals: Kiwa (NL), Belgaqua (B), DVGW (D), NF - ACS (F), NSF (US).

7 FI1 DN8 FI15 DN15 E E 7 Ø B Ø B D Ø C D Ø C F FO15 DN15 FO2 DN2 E E Ø B Ø B Ø C D F Ø C D F FW1 DN1 H K Ø B J D G Ø C F E All dimensions are given in mm. DN model ØA ØB ØC D E F G H J K 8 FI1 23 ± ±.1 2 ± FI15 3 ± ± ± ± FO15 3 ± ± ± ± FO ±.2 24 ±.2 22 ± ± FW1 23 ± ± ± ± ±.2 ±.2 ±.1 ±.5 ± FI1 - DN FW1 - DN1 FI15 - DN15 FO15 - DN15 FO2 - DN

8 8 IN serie The Watts snap-in valve type IN is a compact and therefore easy to install check valve. The advantage for OEM applications is, that in case of a sideconnection in the housing, the O-ring can be mounted first and secondly the check valve itself. This way the O-ring will not be damaged by the sharp edges of the side- connection. This check valve will meet all quality requirements. Its advantages are yours. Approvals: Kiwa (NL), Belgaqua (B), DVGW (D), NF - ACS (F), WRAS (UK), ETA - GDV (DK), SITAC (S), NSF (US), AWQC (AUS). Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal IN15: DN15 IN2: DN2 IN25: DN25 IN32: DN32 IN4: DN4 IN5: DN5 IN15 15 W IN2 2 W IN25 25 W IN32 32 W IN4 4 W IN5 5 W Material specifications House Valve Torpedo Diaphragm O-ring Spring Stainless steel IN15 DN15 IN2 DN2 IN25 DN25 IN32 DN32 O ring IN4 DN4 IN5 DN5 Ø J Ø H (.) Ø G Ø F 3 2 E K L (min.) B C D All dimensions are given in mm. DN model ØA B C D E ØF ØG ØH ØJ K L 15 IN ±.4 17 ± ±.5 ± IN ± ± ±.5 ± IN ± ± ±.5 ± IN ± ± ± ±.5 ± IN ± ± ± ±.5 ± IN ± ± ± ± ±

9 IN15 - DN15 IN2 - DN IN25 - DN25 IN32 - DN IN4 - DN4 IN5 - DN

10 1 IO serie To meet the ever increasing quality requirements, Watts developed the snap-in check valve type IO. The O-ring is already mounted and fixated on the check valve, thus creating an easy to mount check valve. Approvals: Kiwa (NL), Belgaqua (B), DVGW (D), NF - ACS (F), WRAS (UK), ETA - GDV (DK), SITAC (S), NSF (US). Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal IO15: DN15 IO2: DN2 IO25: DN25 IO32: DN32 IO4: DN4 IO5: DN5 IO15 15 W IO2 2 W IO25 25 W IO32 32 W IO4 4 W IO5 5 W Material specifications House Valve Torpedo Diaphragm O-ring Spring Stainless steel IO15 DN15 IO2 DN2 IO25 DN25 IO32 DN32 O ring IO4 DN4 IO5 DN5 Ø J Ø G Ø F Ø H (.) 3 2 E B K L (min.) C D All dimensions are given in mm. DN model ØA B C D E ØF ØG ØH ØJ K L 15 IO ± ± ± IO ± ± ± IO ± ± ± IO ± ± ± ± IO ± ± ± ± IO ± ± ± ±

11 IO15 - DN15 IO2 - DN IO25 - DN25 IO32 - DN IO4 - DN4 IO5 - DN

12 12 WM serie The Watts slide-in check valve type WM features a noiseless operation, very low pressure loss and absolute sealing at high and low back pressures. The split valve stem principle guarantees a trouble free operation for many years. Approvals: Kiwa (NL), Belgaqua (B), DVGW (D), NF (F) except DN4, - ACS (F), ETA - GDV (DK), SITAC (S), NSF (US). Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal WM15: DN15 WM2: DN2 WM25: DN25 WM4: DN4 WM15 15 W WM2 2 W14926 WM25 25 W WM4 4 W14946 Material specifications House Valve Torpedo Diaphragm Spring Stainless steel WM15 DN15 WM2 DN2 WM25 DN25 WM4 DN4 F 3 " Ø H Ø G 1 2 Ø E J K B C D All dimensions are given in mm. DN model ØA1 ØA2 B C D ØE F ØG ØH J K 15 WM ± WM WM ± ± WM ± ± ± ± ±.1 ±.1

13 WM15 - DN WM2 - DN WM4 - DN WM25 - DN

14 I INSERT CHECK VALVES 14 IW2 DN2 The Watts check valve type IW2 shows the inventive solutions of Watts Industries. Our R&D made this check valve for our customers with the same performances they are used to. Other diameters are also possible. Approvals: GDV (DK), NSF (US). O ring Other diameters on request. 2. ø ø 19.8 ø 2.6 ±.1 ø 16 ø min.4 33 IW2 2 W TO15 DN15 The TO15 is specially designed for hydraulic safety groups that are fitted to the cold water supply of storage water heaters. This special valve is tested according to the EN1487 and will stand a imum half hour of heavy treatment with saturated steam up to 18 C during calamities. Due to the PPS material, the TO15 valve will keep its form and function. The lip-seal is mounted in such a way that it will survive the passage of high temperature steam during this simulated calamity. Approvals: Belgaqua (B), NF - ACS (F), ETA (DK), SITAC (S), AWQC (AUS). O ring Other diameters on request. ø ø 18.6 ø 19.2 ±.1 ø ø 15.6 ø 18.5 ± ± ±.5 TO15 15 W Technical specifications Working pressure PN1 Testing pressure 16 kpa Nominal operating temperature 65 C Peak temperature 9 C for 1h per day Diameter nominal IW2 DN2 Diameter nominal TO15 DN15 Material specifications IW2 TO15 House PPS Valve PPS Torpedo PPS Diaphragm O-ring Spring Stainless steel TO15- DN15 6 IW2 - DN

15 Auxiliary mounting tools In order to achieve a perfectly leaktight check valve construction, it is of crucial importance that mounting dimensions are respected. On each check valve data sheet, you will find the required mounting dimensions to be created in the housing to the check valve. In order to avoid any damage of the check valves and O-rings it is very important that check valves are mounted in the correct way. To support positioning and mounting in the right way Watts Industries produced a mounting tool for every check valve. The dimensions of the tools are given below. When an approved Watts check valve is built in in accordance with the mounting dimensions as given on the relevant check valve data sheet and when the proper auxiliary tools are used, Watts Industries ensures a check valve performance that will last for many years. 15 All dimensions are given in mm. DN model H1 ØD1 ØD2 ØD3 L1 L2 L3 L4 B1 B2 8 FI ± ± ± ± min CO ± ± ± ± min CO ± ± ±.1 ± min CO ± ± ± ± min CO ± ± ±.1 8 ± min CO ±.5 11 ± ± ± ± min CO ± ± ± min ±.2-15 IN/IO/WM ± ± ± min ±.2-2 IN/IO/WM ± ±.2 16 ± min IN/IO/WM ± ± min IN/IO ± ± ± min IN/IO/WM ± ±.1 23 ±.2 3 ± min IN/IO ± ± ±.2 4 ±.2 min Remark: dimensions are under usual reserve (6x) B1 C C ØD1 ØD2 ØD3 H1 L4 L2 L3 L1 The photos, illustrations and descriptions contained in this publication are solely intended as an indication. Watts Industries reserves the right to make technical and design changes to its products without prior notice.

16 Product range Watts Industries - System disconnectors - Backflow protection devices - Check valves - Safety units - Safety relief valves - Pressure reducing valves - Automatic control valves - Butterfly valves - Shut off valves - Measuring gauges - Temperature control - Expansion vessels - Process switches - Fuel products - Gas products - Electronic controls - Installation protection products - Radiator valves - System products - Manifolds and fittings Re-order no. 52(3)-UK-16/9 Watts Industries France 159 avenue d'orange CS 111 SORGUES VEDENE cedex FRANCE Phone +33 () Fax +33 () /39 contact@wattswater.com