Water level control valve, Water level valve - Pistec valve (desire 431)

 Water level control valve 

 Water level valve Pistec valve (desire 431)

Pistech valve (Varaam 431) is a buoyancy type water level control valve that controls the opening and closing of the valve body by operating the pilot valve by the buoyancy and weight of the buoy for the purpose of controlling the liquid level in the low tank

By using a pilot valve to open and close the valve with a piston in a fully mechanical structure that does not require a separate power source and drive device, it has good shutoff and operation at high pressure and excellent durability. It is a simple and practical high-capacity water level control valve that does not require the installation of additional pipes and valves

In addition, it provides sanitation and clean water supply with epoxy powder coating, which is harmless to the human body

The basic flange type is KS B 1511

Pistec Valve [Varaam 431]
model number	431-050	431-065	431-080	431-100	431-125	431-150	431-200	431-250	431-300
standard	50A (2")	65A ( 2 1/2 " )	80A (3")	100A (4")	125A (5")	150A (6")	200A (8")	250A (10")	300A (12")
working pressure	0.05~0.98 MPa (0.5~10 kgf/cm2)
pilot valve	Female threaded KSPT 1/2 (Optional: NPT)
used fluid	Water / Diesel (Optional) Inquiry /Fluid temperature: 0°C ~ 80°C

Connection size (mm)	D	øE	F	G	L	øE	H1	H2
50A	129	135	124	80	230	135	78	188
65A	140	154	136	90	290	154	88	211
80A	155	180	155	100	310	180	100	236
100A	177	220	167	115	350	220	110	270
125A	225	260	187	128	400	260	125	353
150A	253	305	211	146	480	305	143	461
200A	311	380	260	175	600	380	175	519
250A	369	455	300	210	610	455	205	615
300A	430	490	330	240	700	490	230	495

number Product Name texture Standard Optional One body Ductile Iron SSC 13 2 cover Ductile Iron SSC 13 3 piston SSC 13 4 quadring Silicone Rubber 5 disk SSC 13 6 disc seal NBR 7 disc washer STS 304 8 shaft STS 304 9 seating SSC 13 10 cylinder liner STS 304 11 shaft guide Brass STS 304 12 speed adjusting screw assembly STS 304 13 sleeve STS 304 14 O-ring (S12) NBR 15 O-ring (P9) NBR 16 O-ring NBR 17 tube STS 304 18 spring STS 304 19 nut STS 304 20 spring washer STS 304 21 piston ring PTFE 22 plug cover STS 304 23 O-ring NBR

※ Note: Made to order with stainless steel material

valve size		mm	50	65	80	100	125	150	200	250	300
		inch	2	2 1/2 _ _	3	4	5	6	8	10	12
Flow Factor	Globe type	Kv	23	35	66	92	145	235	332	575	920
		Cv	27	41	77	107	169	274	388	672	1075
	Angle type	Kv	32	51	81	130	185	302	426	733	1150
		Cv	37	60	95	152	216	353	498	856	1343

• Flow coefficient Kv or Cv = Q/√ΔP, Cv = 1.168Kv
• Kv: flow rate per hour Q (㎥/hr) at differential pressure 1 (kgf/㎠)
• CV: Flow per minute Q (Gal/min) at differential pressure 1 (PSI)
• ΔP : Pressure difference between both ends of the valve (kgf/cm2 or PSI)

1. When installing this valve, refer to the standard piping diagram.
2. This product consists of a main body and a pilot valve. Use our standard products for the pilot valve.
3. During test operation, be sure to close the inlet/outlet valves and remove foreign substances from the piping through the bypass.
4. Be sure to install a strainer at the front end of the primary side of this valve and adjust the opening/closing speed according to the site conditions during trial operation using the speed adjusting screw. The cut-off clockwise speed is turned counterclockwise (CW), and vice versa when turned counter (CCW).