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RKH/SKH Ball Valve

Classification: high pressure ball valve

Max. Working Pressure: 350bar
Nominal Size: 32～50mm
Working Temperature:-45℃～+200℃
Body Material: 304 or 316L Stainless steel 、Carbon steel

Product details：

I) RKH/SKH High Pressure Ball Valve (DN32~50 mm)

Features
•RKH stainless steel ball valve with a round body, high working pressure and large nominal size
•SKH carbon steel ball valve with a forged body, high working pressure and large nominal size
•Pressure rating (max. working pressure) up to 350 bar

II) RKH/SKH-B High Pressure Ball Valve for Gases (max. working pressure: 210~300 bar; see table of working pressures on the next page)

Features:
● special seal design; the ball valves have undergone low and high pressure gas tests.
● ≥DN50 ball valve, the use of gas medium, please choose stainless steel body material

Ordering Information

Table of RKH/SKH Ball Valves and Sealing Materials

Type	Material	Uses
Metal Material	304 stainless steel	Intended for water, air and slightly corrosive media; temperature: -196℃~+400℃
	316L stainless steel	Intended for weak acids, alkalis and other corrosive media; temperature: -196℃~+400℃
	A105 forged steel	Common oil hydraulic systems without special material requirements, etc.; surface galvanized; temperature: -45℃~+250℃
	45# carbon steel	Common oil hydraulic systems without special material requirements, etc.; surface galvanized; temperature: -45℃~+250℃
Ball Seat Seal	POM	Mainly used for non-corrosive oils, water and gases; temperature: -30℃~+100℃
Ball Seat Seal	PEEK	Relatively good corrosion resistance; wide temperature range: -60℃~+250℃
O-ring	NBR	Intended for oils, water, air and other non-corrosive media; temperature: -35℃~+100℃
	CNBR	Intended for oils, water, air and other media at low ambient temperature; temperature: -45℃~+100℃
	FPM	Good chemical adaptability; especially suitable for oils and concentrated acids; temperature: -25℃~+200℃
	EPDM	Intended for ammonia, steam, formaldehyde and ethylene glycol; mineral oil intolerant; temperature: -50℃~+130℃

Common Material Combinations of Ball Valves

Material	Combination Code	Ordering Number (example)	Body	Ball Seat Seal	Stem Seal	Applicable Media
Stainless Steel Ball Valve	4425	RKH-G11/4-32-4425	304	POM	FPM	Water, oil, air and other neutral media; -25℃~+100℃
	4423-B	RKH-G11/4-32-4423-B	304	POM	NBR	Air or nitrogen and other neutral gas, -30℃～+100℃
	6665	RKH-G11/4-32-6665	316L	PEEK	FPM	Applicable to high-temperature or corrosive media; -25℃~+200℃
Carbon Steel Ball Valve	3123	SKH-G11/4-32-3123	A105	POM	NBR	Oils; -25℃~+100℃
Carbon Steel Ball Valve	3168	SKH-G11/4-32-3168	A105	PEEK	Low temperature NBR	Oils at low ambient temperature; -45℃~+100℃

Valve Dimensions and Working Pressures [mm]

Type of Body	Nominal Size DN	Max. Working Pressure [bar]				SW	E	F	H	G	C	S	T	Mounting Hole Code
		POM		PEEK
		Liquid	Gas	Liquid	Gas
RKH	32	315	300	350	300	17	87	86.5	39.7	M6	50	9	11	F05
	40	315	300	350	300	17	95	94.2	44.2	M6	50	9	11	F05
	50	315	210	315	210	17	110	110	52.5	M8	70	9	11	F07
SKH	32	315	300	350	300	17	79	86.3	39.5	M6	50	9	11	F05
	40	315	300	350	300	17	86	93	43	M6	50	9	11	F05
	50	315	-	315	-	17	108	111.5	54	M6	50	9	11	F05

If ball valves with mounting hole are required, add “-D” to the end of the ordering number, for example: RKH-G11/2-40-4425-D.

Parameters Table：

Table of Technical Data of Various Types of Ball Valve Connections [mm]

1) Female Connection: G thread (ISO228-1)

Diagram	Stainless Steel Ball Valve Ordering Number	Carbon Steel Ball Valve Ordering Number	DN	D	L	A	B	Pressure Rating [bar]
G Female Thread	RKH-G11/4-32-4425	SKH-G11/4-32-3123	32	G11/4	115	102	210	315
	RKH-G11/2-40-4425	SKH-G11/2-40-3123	40	G11/2	120	105	210	315
	RKH-G2-50-4425	SKH-G2-50-3123	50	G2	140	113	250	315

2)Metric Thread 24° Cone Connection: “L”/“S” Series [mm]

Diagram	Stainless Steel Ball Valve Ordering Number	Carbon Steel Ball Valve Ordering Number	DN	D	d	L	A	B	Pressure Rating [bar]
Metric Thread 24° Cone	RKH-42L-32-4425	SKH-42L-32-3123	32	M52*2	42	128	102	210	250
	RKH-48L-40-4425	SKH-48L-40-3123	40	M58*2	－	150	105	210	210
	RKH-60L-50-4425	SKH-60L-50-3123	50	M72*2	－	164	113	210	210
	RKH-38S-32-4425	SKH-38S-32-3123	32	M52*2	38	140	102	210	315
	RKH-50S-40-4425	SKH-50S-40-3123	40	M68*2	50	165	105	210	300
	RKH-60S-50-4425	SKH-60S-50-3123	50	M76*2	－	174	113	250	250

Diagram	Stainless Steel Ball Valve Ordering Number	Carbon Steel Ball Valve Ordering Number	DN	S *	d	L	A	B	Pressure Rating [bar]
Weld Fitting	W-RKH-42L-32-4425	W-SKH-42L-32-3123	32	5	42	205	102	210	250
	W-RKH-48L-40-4425	W-SKH-48L-40-3123	40	5	48	226	105	210	210
	W-RKH-60L-50-4425	W-SKH-60L-50-3123	50	6	60	265	113	210	210
	W-RKH-38S-32-4425	W-SKH-38S-32-3123	32	5	38	233	102	210	315
	W-RKH-50S-40-4425	W-SKH-50S-40-3123	40	7	50	262	105	210	300
	W-RKH-60S-50-4425	W-SKH-60S-50-3123	50	7	60	276	113	250	250

＊If there is a high deviation of weld nipple wall thickness, specify when placing an order, for example: W-RKH-42L-32-4425(42*7), where “*7” indicates the weld nipple wall thickness S is 7.

Torque Curves: The working torque of ball valves depends on pressure and ball seat sealing material. In the diagram, the working medium is oil, the seal is POM and (supposing water*1.2, air*1.4 and granular powder*1.6) actuator torque = 1.2*Torque (where: 1.2 is the safety factor).

Ball Valves with Lock: RKH and SKH series ball valves offered by EAGLE can all be provided with a structure for lock, thereby protecting the open/closed status of critical ball valves. The lock needs to be separately purchased by customers.

Please add “AV” to the end of the ordering number when placing an order, for example: RKH-G2-50-4425-AV

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