RS Series Resilient Seat Butterfly Control Valves

CLARK SOLUTIONS
RS Series Resilient Seat Butterfly Control Valves
Commercial or Industrial Grade Actuators, 2" to 20"

DESCRIPTION
Clark offers a complete line of Butterfly valves for both commercial and industrial applications. The valves are designed for hot and chilled water, as well as steam applications up to 10 PSI saturated steam inlet. The valves can be used for on/off or throttling control, isolation, flow balance, mixing or diversion.

Valves are available in full-lugged or wafer mounting style. All bodies meet ANSI 150 pressure ratings for hydrostatic requirements. The valves are compatible with ANSI 125/150 flanges. Standard valves 2"-12" are bidirectional with a bubble-tight shut-off pressure rating of up to 250 PSI dead end service. Valves 14"-20" are also bidirectional with a bubble-tight shut-off standard pressure rating of 50 PSI. Rating to 150 PSI is available with non-undercut (NU) discs.

A selection of commercial grade actuators and industrial grade NEMA 4/4X actuators are available

SPECIFICATIONS
VALVES
Standard Materials:
	BODY: Cast Iron
	DISC: Aluminum Bronze
	STEM: Stainless Steel
	SEAT: EPDM
Optional Materials:
	BODY: Ductile Iron,Cast Steel,Aluminum
	DISC: Ductile Iron (Phosphate or Nylon 11 Coated),Stainless Steel
	STEM: Carbon Steel (Phosphate Coated)
	SEAT: BUNA-N (Nitrile),Viton GF
ACTUATORS
Check here for actuator specification sheet: EN44 & EN88 Non-Spring Return Electric Actuators EN132, EN177 & EN310 Non-Spring Return Electric Actuators ES62A, ES75A & ES142A Spring Return Electric Actuators ES62, ES75 & ES142 Spring Return Electric Actuators RE Reversing Electronic NEMA 4/4X Actuators

VALVE & ACTUATOR SELECTION
(UNITS ARE SUPPLIED FULLY ASSEMBLED & TESTED)
1) Review our Motor Actuated Valve Application Guide and select the
         valve type, size & materials. Refer to Clark bulletins on Ball
          valves or Globe valves if these valve types are better suited to
          the application.
2) Review valve C v and close-off rating chart (Tables A & B) and select
         base valve model and actuator model.
3) Review Valve and actuator dimensions.
4) Review selected actuator spec. sheet and determine specific actuator
         model number.
5) Assemble final model number using model number guidelines under
         "Ordering Information".

Table A		Commercial Actuator Selection Chart for valve sizes 2" to 6"
Valve Size	Cv		Base Valve Model		Actuator Model Number/Maximum Close-off- PSI
	Two Position	Modulating			Two-way Differential Pressure (PSI)			Three-way Differential Pressure (PSI)
	@90º	@70º	Two-Way	Three-way	50	100	150**	50	100	150**
2"	60	52	RS2A-2	RS3A-2	ES142	ES142	ES142	ES142	ES142*	ES142*
					EN177	EN177	EN177	EN177	EN177	EN177
2 1/2"	151	107	RS2A-2.5	RS3A-2.5	ES142	ES142*	ES142*	ES142*	ES142*	EN310*
					EN177	EN177	EN310	EN310	EN310
3"	262	175	RS2A-3	RS3A-3	ES142*	ES142*	ES142	ES142*	ES142*	EN310*
					EN310	EN310	EN310	EN310	EN310
4"	647	453	RS2A-4	RS3A-4	ES142*	EN310*	EN310*	ES142*	EN310*	EN310*
					EN310			EN310
5"	1141	832	RS2A-5	RS3A-5	EN310*	EN310*	EN310*	EN310*	-	-
6"	1580	1160	RS2A-6	RS3A-6	EN310*	-	-	EN310*	-	-
* Requires two actuators
** Call for close-offs greater than 150 PSI

Table B		Industrial Actuator Selection Chart for valve sizes 2” to 20”
	CV				Actuator Model/Maximum Close-off- PSI
Valve Size	Two Position	Modulating	Valve Model		Two-Way Differential Pressure (PSI)			Three-way Differential Pressure (PSI)
Valve Size	@90°	@70°	Two-way	Three-way	50	100	150*	50	100	150*
2”	60	52	RS2A-2	RS3A-2	RE1.5	RE1.5	RE1.5	RE1.5	RE3	RE3
2 1/2”	151	107	RS2A-2.5	RS3A-2.5	RE3	RE3	RE3	RE3	RE3	RE6
3”	262	175	RS2A-3	RS3A-3	RE3	RE3	RE3	RE3	RE6	RE6
4”	647	453	RS2A-4	RS3A-4	RE3	RE6	RE6	RE3	RE6	RE6
5”	1141	832	RS2A-5	RS3A-5	RE6	RE6	RE10	RE6	RE10	- RE10
6”	1580	1160	RS2A-6	RS3A-6	RE6	RE10	RE10	RE6	RE15	RE15
8”	2892	2524	RS2A-8	RS3A-8	RE15	RE20	RE20	RE15	RE25	RE30
10”	4593	3470	RS2A-10	RS3A-10	RE20	RE15T	RE15T	RE20	RE20T	RE20T
12”	6682	5600	RS2A-12	RS3A-12	RE30	RE20T	RE20T	RE20T	RE25T	RE25T
14”	10000	7400	RS2A-14	RS3A-14	RE30	RE25T	RE25T	RE20T	call	call
16”	13000	9600	RS2A-16	RS3A-16	RE20T	RE30T	call	RE25T	call	call
18”	18000	96000	RS2A-18	RS3A-18	RE25T	call	call	call	call	call
20”	22000	12000	RS2A-20	RS3A-20	RE30T	call	call	call	call	call

-ratings based on 10ft/sec max. fluid velocity
*call for close-offs greater than 150 PSI

Table C	Valve Dimensions (inches)
							Mounting Flange Drilling							Lug Bolt Data
																Threads
Valve Size	A	B	C	D	E	F	BC	#Holes	Hole Dia.	G	H	Q*	Key	BC	#Holes	UNC-2B
2”	2.06	4.13	5.32	1.69	4.00	1.25	3.25	4	0.44	0.56	0.38	1.38	n/a	4.75	4	5/8-11
2 1/2”	2.56	4.63	5.94	1.81	4.00	1.25	3.25	4	0.44	0.56	0.38	2.00	n/a	5.50	4	5/8-11
3”	3.06	5.19	6.31	1.81	4.00	1.25	3.25	4	0.44	0.56	0.38	2.63	n/a	6.00	4	5/8-11
4”	4.06	6.38	7.13	2.06	4.00	1.25	3.25	4	0.44	0.63	0.44	3.69	n/a	7.50	8	5/8-11
5”	5.06	7.38	7.69	2.25	4.00	1.25	3.25	4	0.44	0.75	0.50	4.75	n/a	8.50	8	3/4-10
6”	5.81	8.50	8.31	2.25	4.00	1.25	3.25	4	0.44	0.75	0.50	5.56	n/a	9.50	8	3/4-10
8”	7.81	10.69	9.50	2.38	6.00	1.25	5.00	4	0.56	0.88	0.63	7.75	n/a	11.75	8	3/4-10
10”	9.81	13.00	10.88	2.69	6.00	2.00	5.00	4	0.56	1.13	n/a	9.75	1/4x1/4	14.25	12	7/8-9
12”	11.81	14.38	11.25	3.13	6.00	2.00	5.00	4	0.56	1.13	n/a	11.75	1/4x1/4	17.00	12	7/8-9
14”	13.25	16.75	12.00	3.00	6.00	3.00	5.00	4	0.56	1.38	n/a	13.13	5/16/5/16	18.75	12	1-8
16”	15.25	19.00	12.95	4.00	6.00	3.00	5.00	4	0.56	1.63	n/a	15.00	3/8x3/8	21.25	16	1-8
18”	17.25	21.38	14.50	4.25	8.00	4.25	6.50	4	0.81	1.88	n/a	16.88	1/2x3/8	22.75	16	1 1/8-7
20”	19.25	23.50	15.88	5.00	8.00	4.25	6.50	4	0.81	1.88	n/a	18.75	1/2x3/8	25.00	20	1 1/8-7

Standard 2” - 12’ valves have fixed resilient seats, 14” and above have removable seats
* Q dimension is the minimum allowable pipe or flange inside diameter at the centered body face to protect the disc sealing
edge against damage when opening the valve.

Two-Way Valve, 2” through 6”
With Commercial Actuators
Size	Model	Dimensions
Size	Model	A
2”	RS2A-2	9.1
2 12”	RS2A-2.5	9.6
3”	RS2A-3	10.0
4”	RS2A-4	10.8
5”	RS2A-5	11.4
6”	RS2A-6	12.0

Actuator Dimensions
Actuator	Dimensions (inches)
Actuator	B*	C	D	E‡
Spring Return
ES142	2.9	8.8	2.3	4.0
Non-Spring Return
EN177	2.5	6.4	1.7	3.2
EN310	2.9	8.8	2.3	4.0

‡”E” dimension is the actuator width

Two-Way Valve, 2” through 14”
With Industrial RE Series Actuators
Size	Model	Dimensions
Size	Model	A
2”	RS2A-2	8.4
2 12”	RS2A-2.5	9.0
3”	RS2A-3	9.3
4”	RS2A-4	10.2
5”	RS2A-5	10.7
6”	RS2A-6	11.3
8”	RS2A-8	12.5
10”	RS2A-10	13.9
12”	RS2A-12	14.3
14”	RS2A-14	16.0

RE Series NEMA 4/4x Actuator Dimensions
Actuator	Dimensions (inches)
Actuator	B	C	D	E	F
Non-Spring Return
RE1.5-RE6	9.93	5.15	3.48	7.42	1/2” NPT
RE10-RE30	11.65	6.07	4.40	9.75	3/4” NPT

-Valves are sometimes directly mounted to actuator (no bracket)
-Call valve for sizes 16” and larger

Three-Way Valve, 2" through 6" With Commercial Actuators
Size	Valve Model	Actuator Model	Dimensions (inches)
Size	Valve Model	Actuator Model	A	B	C	D	E	F	G
2"	RS3A-2	ES142/EN177	4.50	1.69	1.38	3.36	5.31	9.01	3.50
2 1/2"	RS3A-2.5	ES142*/EN310	5.00	1.81	2.00	3.36	5.94	9.64	3.50
3"	RS3A-3	ES142*/EN310	5.50	1.81	2.63	3.36	6.31	10.01	3.50
4"	RS3A-4	ES142*/EN310	6.50	2.06	3.69	3.36	7.13	10.83	3.60
5"	RS3A-5	EN310*	7.50	2.25	4.75	4.77	7.69	11.39	2.90
6"	RS3A-6	EN310*	8.00	2.25	5.56	4.77	8.31	11.86	2.90

Three-Way Valve, 2" through 12" With Industrial RE Series Actuators
Size	Valve Model	Actuator Model	Dimensions (inches)
Size	Valve Model	Actuator Model	A	B	C	D	E	F	G
2"	RS2A-2	RE1.5	4.50	1.69	1.39	3.36	5.31	7.31	9.26
2 1/2"	RS2A-2.5	RE3	5.00	1.81	2.00	3.36	5.94	7.94	9.26
3"	RS2A-3	RE3	5.50	1.81	2.63	3.36	6.31	8.31	9.26
4"	RS2A-4	RE3	6.50	2.06	3.69	3.36	7.13	9.13	9.26
5"	RS2A-5	RE6	7.50	2.25	4.75	4.77	7.69	9.69	9.26
6"	RS2A-6	RE6	8.00	2.25	5.56	4.77	8.31	10.13	9.26
8"	RS2A-8	RE15	9.00	2.38	7.75	5.47	9.50	12.50	11.65
10"	RS2A-10	RE20	11.00	2.69	9.75	6.54	10.88	13.88	11.65
12"	RS2A-12	RE30	12.00	3.13	11.75	6.54	12.25	15.25	11.65

*Requires two actuators
-Call for valve sizes 16” and greater

ORDERING INSTRUCTIONS
1) REVIEW OUR MOTOR ACTUATED CONTROL VALVE APPLICATION GUIDE
2) SPECIFY ACTUATOR MODEL NUMBER (FIRST SELECT BASE ACTUATOR FROM TABLES B & C , THEN SEE SPECIFIC ACTUATOR SPECIFICATION SHEETS TO DETERMINE COMPLETE MODEL NUMBER)
Non-Spring Return Actuators	EN44 & EN88
	EN132, EN177 & EN310
Spring Return Actuators	ES62, ES75 & ES142
Industrial Actuators	RE
3) SPECIFY VALVE MODEL NUMBER (SEE TABLES BELOW)
ABCD	EXAMPLE: RE6F1(ACTUATOR) - RS2A6-L (VALVE)

PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS
Valve Model Number
A Base Model	B Optional Materials Select as many as apply	C Mounting Style	D Three-Way Mounting Arrangement
	- = none
See Tables A & B Standard Materials are : Cast Iron Body Aluminum Bronze Disc Stainless Steel Stem EPDM Seat	IB=Ductile Iron Body SB=Cast Steel Body AB=Aluminum Body ID=Ductile Iron Disc(Phosphate or Nylon 11 Coated) SD= Stainless Steel Disc CS=Carbon Steel Disc BS= BUNA-N Seat	L=Lugged type W=Wafer Type	1= 1 2= 2 3= 3 4= 4 5= 5 6= 6
	VS= Viton GF Seat

For assistance call 978-568-3400