Combustion Valve - Series: 22

Size: 2" thru 14" for 125/150 lb. Flanging

Maximum Operating Temperature: Maximum design temperature to 900°F

Maximum Differential: 1 psig.

Maximum Containment: 25 psig

Design Standard

The PDC Series 22 Combustion Valve is a cost effective, manual, wafer style butterfly valve designed for use in low pressure, low cycle (“set -and-forget”) applications. It is designed for use in temperatures up to 900°F Maximum with differential pressures not to exceed 1 PSIG. The valve is designed with appropriate clearances in the disc for combustion installations. These applications are typically :”Hot” or “Cold” lines of air or combustible gases that require High-Low or Modulating flow control.

Specifications

Size Range:

2" thru 14" for 125/150 lb. Flanging

Pressure Rating:

2 PSI (.1 Bar) max

Body Style:

Wafer

Design Features

Lightweight, solid ring, wafer design for ease of installation. Four holes to insure proper alignment without transfer of pipe stresses to the valve body.
PDC’s Combination 10 Position/Infinite Throttling & Locking Lever Assembly offers both types of the most commonly requested manual actuators in one unit.
Adjustable packing – Graphited TEFLON ® Braid for “Cold” (up to 450°F) applications – Graphited Glass Yarn Reinforced with Inconel Wire for “Hot” ( up to 900°F) applications.
Valves can be repacked without removal from the line.
Inboard bronze bushing on “Cold” (up to 450°F) applications and “metallized” carbon bushing on “Hot” (up to 900°F) applications are designed for long life, nonfreezing, low torque characteristics.

Applications

Blower Equipment
Compressor Equipment
Boiler Equipment
Environmental Systems
V.A.C
Industrial Process Furnaces
Oil Gas/Refining
Power Generation/Co-Generation
Water & Sewage
Stationary Engines
Chemical Equipment
Mining Equipment
Gas Recovery Systems

Standard Materials and Seat Construction

	Cold (450°)	Hot (900°)
Body:	Cast Iron	Cast Iron
Disc:	Carbon Iron	Carbon Iron
Shaft:	416 Stainless Steel	316 Stainless Steel
Seat:	Swing-thru, Paddle Disc	Swing-thru, Paddle Disc
Bushing:	Graphited Bronze	Metallized Carbon
Packing:	Graphited Teflon	Graphited Yarn Reinforced with Iconoly
Packing Nut:	Brass	316 Stainless Steel

Optional Materials and Seat Construction

Body:	Cast Iron
Disc:	Cast Iron
Shaft:	316 Stainless Steel
Seat:	Swing-thru
Bushing:	Metcar
Packing:	High Temp Packing
Packing Nut:	316 Stainless Steel

Valve Body
Valve Disc
Power End Shaft
Inboard Bushing
Packing
Packing Nut
Pin
Pipe plug

Chart or Graph

Dimensions

VALVE SIZE	Valve Related Dimensions
	Assembly Number	A	B	C	D	E
2”	221-017-000-ZZ	2	2-3/4	5-3/8	1-1/2	3-7/8
2.5”	221-027-000-ZZ	2-1/2	3	5-5/8	1-1/2	4-5/8
3”	221-037-000-ZZ	3	3-1/8	5-7/8	1-1/2	5-1/4
4”	221-047-000-ZZ	4	4-1/4	6-3/8	1-1/2	6-3/8
5”	221-057-000-ZZ	5	4-7/8	6-7/8	1-1/2	7-1/2
6”	221-067-000-ZZ	6	5-3/8	7-3/8	1-1/2	8-9/16
8”	221-077-000-ZZ	8	6-1/2	8-3/8	1-1/2	10-3/4
10”	221-087-000-ZZ	10	8	10-5/8	1-7/8	13
12”	221-097-000-ZZ	12	9-1/2	11-5/8	1-7/8	15-1/4
14”	221-107-000-ZZ	13-1/8	10-1/2	12-1/8	1-7/8	16-3/8

Cv Values

(Flow in GPM of 60°F water at 1 psi pressure drop, specific gravity=1)

VALVE SIZE	DISC ANGLE, DEGREES
	10	20	30	40	50	60	70	80	90
2”	2	5	12	21	36	51	67	87	95
2.5”	4	8	21	36	59	88	132	187	204
3”	6	15	32	54	89	139	212	293	389
4”	14	29	57	103	167	270	411	578	784
5”	22	45	92	166	278	450	668	959	1,336
6”	32	66	132	239	401	664	1,003	1,439	2,099
8”	56	117	236	426	714	1,181	1,783	2,721	4,046
10”	87	183	369	667	1,116	1,847	2,788	4,255	6,679
12”	126	265	531	960	1,608	2,660	4,017	6,127	9,622
14”	150	317	636	1,151	1,927	3,187	4,813	7,342	11,530

Materials of Construction

	450° F Service	900° F Service
Components	ZZ=00	ZZ=28
Body:	Cast Iron	Cast Iron
Disc:	Carbon Iron	Carbon Iron
Shaft:	416 Stainless Steel	316 Stainless Steel
Bushing:	Graphited Bronze	Metcar
Packing:	Graphited Teflon	High Tempaerature
Packing Nut:	Brass	316 Stainless Steel

Downloads

PDC Damper Valve Brochure