Spirax Sarco Spirax Sarco BCV43 Drain Control Valve DN25/DN40

Spirax Sarco Model BCV Drain Control Valves feature a Spira-trol body and are designed for use in steam boiler drains and other high-pressure system drain or low-flow applications. Typically, the BCV is used in conjunction with a blowdown controller to form an automatic BCV control system. The flow rate of the valve is regulated by the stroke of the control stem, and the BCV has a seat that is resistant to erosion and a highly efficient valve shutoff. A ¼" BSP plug is provided at the bottom of the valve for the installation of a sample cooler.

Control valve type

• Motorized Control BCV Sewage Control Valve
• Pneumatically Controlled BCV Sewage Control Valves

Available types

material (that sth is made of)	connection method
	whorl of fingerprint	socket welding	flangeless	butt welding
carbon steel	BCV41	BCV42	BCV43	BCV44
stainless steels	BCV61	BCV62	BCV63	BCV64
ductile iron	BCV71		BCV73
alloy steel		BCV82	BCV83	BCV84

SPIRA-TROL Valve Body Options

Stem seals	Graphite Seal	High temperature applications
Seat	hard seal	316L stainless steel Stellite alloy

Matching actuators and positioners

formality	actuators	positioner
electric powered	AHL1 Series
aerodynamic	PN9___ Series	PP5 (pneumatic) EP5 (electric/pneumatic) ISP5 (intrinsically safe electric/pneumatic) SP200is, SP400 and SP500 (microprocessor electric/pneumatic) SP300 (digital communications)

Standards and Certificates

This product is fully compliant with the European Pressure Equipment Directive 97/23/EC.This product can be supplied with an EN 10204 3.1 certificate. Note: If a certificate is required please specify when ordering.

(of a computer) run

The BCV type drain control valve is factory set to be closed.

• Motorized form: When the control signal is connected to the control valve, the valve opens to the position set by the internal limit switch.
• Pneumatic form: When the solenoid valve is opened, compressed air enters the actuator and opens the valve to the set travel position.

connection method

½", ¾", 1", 1¼", 1½" and 2" Screwed BSP or NPT, socket weld connections and butt weld connections.
DN15, DN20, DN25, DN32, DN40 and DN50 Flanged:
EN 1092 PN25, PN40, PN63 and PN100
ASME class 125, 150, 250, 300 and 600
JIS / KS 10K, 20K, 30K and 40K

makings

Numbered parts	makings
1. Valve body	Carbon steel: 1.0619+N / WCB Stainless Steel: 1.4408 / CF8M Ductile iron: EN-GJS-400-18-LT / A395 Alloy steel: 1.7357 / WC6 Forged steel: 1.0460 / A105N or 1.0619 / WCB
2. Bonnet	Stainless Steel: 1.4408 / CF8M Ductile iron: EN-GJS-400-18-LT / A395 Alloy steel: 1.7357 / WC6
3. Seat compression squirrel cage	Stainless Steel 316L
4. Valve seats	Stainless Steel 316L Alloy
5. Valve plugs	Stainless Steel 316L Alloy

Electrical data (actuator AHL1 series)

• Supply Voltage: Standard 24 Vac type, option card available
• Power frequency: 50 - 60 Hz
• Power supply power: 10 - 18
• Actuator speed: 2 mm / s, 4 mm / s or 6 mm / s
• Maximum thrust: 2 kN
• Maximum closing differential pressure: 42 bar g
• Caliber with actuator and maximum closing differential pressure:
  • DN15 - DN25 (½" - 1"): AHL1 Series/PN9123E, 42 bar g
  • DN32 - DN50 (1¼" - 2"): AHL1 Series/PN9223E, 42 bar g

Pressure/Temperature Limits

Pressure/temperature limits vary for different models and connection standards as follows:

• BCV4 Series: Valve body design grades are PN40, PN63, PN100, etc. The maximum allowable pressure, maximum allowable temperature, minimum allowable temperature, maximum working pressure (saturated steam), maximum working temperature, minimum working temperature under different grades have corresponding values, and the maximum hydrostatic test pressure is 1.5 times of PMA.
• BCV6 Series: Valve body design grades involve different pressure classes under EN, ASME, JIS / KS standards, etc. The maximum allowable pressure, maximum allowable temperature and other parameters corresponding to each grade are clearly defined, and the maximum hydrostatic test pressure is 1.5 times the PMA.
• BCV7 Series: Valve design classes include PN 25, ASME class 125 or ASME class 250, JIS / KS 10K, etc. The corresponding pressure/temperature parameters as well as the maximum hydrostatic test pressure have specific values.
• BCV8 Series: Valve design classes such as PN63 or PN100, ASME class 600, JIS / KS 30K or 40K, with each pressure/temperature parameter and maximum hydrostatic test pressure listed for each class.

weights

connection standard	Electric type weight (partial data)	Pneumatic type weight (partial data)
125 JIS/KS 10K	20, 12.8, 13, 30.5, 31	12, 16, 18, 19, 36, 39, 44
300 JIS/KS 20K	12, 23	16, 18, 19, 36, 39, 44
300 JIS/KS 30K	16, 18, 19, 25, 28, 33	16, 18, 19, 36, 39, 44
600 JIS/KS 40K	16, 18, 19, 25, 28, 33	16, 18, 19, 36, 39, 44

BCV Selection Guide

Valve Caliber	½", ¾", 1", 1¼", 1½", DN15, DN20, DN25, DN32, DN40 and DN50 and 2", DN15
Valve Series	BCV
Valve Material	4 (carbon steel), 6 (stainless steel), 7 (ductile iron), 8 (alloy steel)
grout	1 (threaded connection), 2 (socket weld connection), 4 (butt weld connection), -BCV8_No item, -BCV7_No item, -BCV7_No item
Stem seals	H (graphite)
Spool type	S (standard spool)
Balance spool	U (without counterbalance spool)
Stem form	S (standard)
bolt connection	S (standard)
flow coefficient	Please give details, Kvs 0.5
connection method	Please list, flange connection ASME 300
actuators	PN (pneumatic), EL (electric), 230 Vac, 110 Vac or 24 Vac, PN

Selection Example

DN15 - BCV: 4, 3, H, Kvs 0.5, -, PN

How to Order

Example: 1 x Spirax Sarco DN15 BCV43 Pneumatic Actuated Control Valve ASME 300 Flange Connection.

Security information, installation and maintenance

For details, refer to the Installation and Maintenance Guide IM-P403-103 shipped with the product.
Installation Note: Install the drain control valve in the direction of the arrow on the valve body and position the actuator vertically above the piping. Of course it can be installed in other directions, but never upside down.
Disposal: This product can be recycled and does not cause ecological problems when disposed of properly.

How to order

The following spare parts are available, no other spare parts are offered. Please note that the spare parts for motorized and pneumatic drain control valves are identical.

Name of spare parts
Actuator clamps
Gasket Assembly
Stem seal assembly (graphite packing)
Stem seat assembly (linear spool (without gasket))

How to order spare parts

Please order spares as described in the table above and provide the valve caliber and form with a detailed product type description on the valve body nameplate. This will ensure that the correct spares are ordered. Example: 1 actuator clamp for Spirax Sarco BCV43 automatic control valve for sewage discharge DN 15.